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https://github.com/voku/Arrayy

🗃 Array manipulation library for PHP, called Arrayy!
https://github.com/voku/Arrayy

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🗃 Array manipulation library for PHP, called Arrayy!

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# 🗃 Arrayy

A PHP array manipulation library. Compatible with PHP 7+ & PHP 8+

``` php
\Arrayy\Type\StringCollection::create(['Array', 'Array'])->unique()->append('y')->implode() // Arrayy
```

![Ed8ypbzWAAIinwv-1](https://user-images.githubusercontent.com/264695/183588620-3f1c2c32-e4aa-4069-9d12-23265689ba0b.jpeg)

* [Installation](#installation-via-composer-require)
* [Multidimensional ArrayAccess](#multidimensional-arrayaccess)
* [PhpDoc @property checking](#phpdoc-property-checking)
* [OO and Chaining](#oo-and-chaining)
* [Collections](#collections)
* [Pre-Defined Typified Collections](#pre-defined-typified-collections)
* [Convert JSON-Data into Collections](#convert-json-data-into-objects-collection)
* [Class methods](#class-methods)
* [use a "default object"](#use-a-default-object)
* [create](#createarray-array--arrayy-immutable)
* [createByReference](#createbyreferencearray-array--arrayy-mutable)
* [createFromJson](#createfromjsonstring-json--arrayy-immutable)
* [createFromJsonMapper](#createfromjsonmapperstring-json--arrayy-immutable)
* [createFromObject](#createfromobjectarrayaccess-object--arrayy-immutable)
* [createFromObjectVars](#createfromobjectvarsobject-object--arrayy-immutable)
* [createWithRange](#createwithrange--arrayy-immutable)
* [createFromGeneratorImmutable](#createfromgeneratorimmutable--arrayy-immutable)
* [createFromGeneratorFunction](#createfromgeneratorfunction--arrayy-immutable)
* [createFromString](#createfromstringstring-str--arrayy-immutable)
* [Instance methods](#instance-methods)
* ["set an array value"](#set-an-array-value)
* ["set an array value via dot-notation"](#setmixed-key-mixed-value--arrayy-immutable)
* ["get an array value"](#get-an-array-value)
* ["get an array value via dot-notation"](#getstring-key-null-default-null-array--mixed)
* ["get the array"](#get-the-array)
* ["delete an array value"](#delete-an-array-value)
* ["check if an array value is-set"](#check-if-an-array-value-is-set)
* ["simple loop with an Arrayy-object"](#simple-loop-with-an-arrayy-object)
* [overview](#arrayy-methods)
* [Tests](#tests)
* [License](#license)

## Installation via "composer require"
```shell
composer require voku/arrayy
```

## Multidimensional ArrayAccess

You can access / change the array via Object, Array or with "Arrayy"-syntax.

### Access via "Arrayy"-syntax: (dot-notation)

```php
$arrayy = new A(['Lars' => ['lastname' => 'Moelleken']]);

$arrayy->get('Lars'); // ['lastname' => 'Moelleken']
$arrayy->get('Lars.lastname'); // 'Moelleken'
```

### Access via "array"-syntax:

```php
$arrayy = new A(['Lars' => ['lastname' => 'Moelleken']]);

$arrayy['Lars']; // ['lastname' => 'Moelleken']
$arrayy['Lars']['lastname']; // 'Moelleken'
```

### Access via "object"-syntax:

```php
$arrayy = new A(['Lars' => ['lastname' => 'Moelleken']]);

$arrayy->Lars; // Arrayy['lastname' => 'Moelleken']
$arrayy->Lars->lastname; // 'Moelleken'
```

### Set values via "Arrayy"-syntax: (dot-notation)

```php
$arrayy = new A(['Lars' => ['lastname' => 'Mueller']]);

$arrayy->set('Lars.lastname', 'Moelleken');
$arrayy->get('Lars.lastname'); // 'Moelleken'
```

### Set values via "array"-syntax:

```php
$arrayy = new A(['Lars' => ['lastname' => 'Moelleken']]);

$arrayy['Lars'] = array('lastname' => 'Müller');
$arrayy['Lars']['lastname']; // 'Müller'
```

### Set values via "object"-syntax:

```php
$arrayy = new A(['Lars' => ['lastname' => 'Moelleken']]);

$arrayy->Lars = array('lastname' => 'Müller');
$arrayy->Lars->lastname; // 'Müller'
```

## PhpDoc @property checking

The library offers a type checking for @property phpdoc-class-comments, as seen below:

```php
/**
* @property int $id
* @property int|string $firstName
* @property string $lastName
* @property null|City $city
*
* @extends \Arrayy\Arrayy
*/
class User extends \Arrayy\Arrayy
{
protected $checkPropertyTypes = true;

protected $checkPropertiesMismatchInConstructor = true;
}

/**
* @property string|null $plz
* @property string $name
* @property string[] $infos
*
* @extends \Arrayy\Arrayy
*/
class City extends \Arrayy\Arrayy
{
protected $checkPropertyTypes = true;

protected $checkPropertiesMismatchInConstructor = true;
}

$cityMeta = City::meta();
$city = new City(
[
$cityMeta->plz => null,
$cityMeta->name => 'Düsseldorf',
$cityMeta->infos => ['lall'],
]
);

$userMeta = User::meta();
$user = new User(
[
$userMeta->id => 1,
$userMeta->firstName => 'Lars',
$userMeta->lastName => 'Moelleken',
$userMeta->city => $city,
]
);

var_dump($user['lastName']); // 'Moelleken'
var_dump($user[$userMeta->lastName]); // 'Moelleken'
var_dump($user->lastName); // Moelleken

var_dump($user['city.name']); // 'Düsseldorf'
var_dump($user[$userMeta->city][$cityMeta->name]); // 'Düsseldorf'
var_dump($user->city->name); // Düsseldorf
```

- "checkPropertyTypes": activate the type checking for all defined @property in the class-phpdoc
- "checkPropertiesMismatchInConstructor": activate the property mismatch check, so you can only add an
array with all needed properties (or an empty array) into the constructor

## OO and Chaining

The library also offers OO method chaining, as seen below:

simple example:
```php
echo a(['fòô', 'bàř', 'bàř'])->unique()->reverse()->implode(','); // 'bàř,fòô'
```

complex example:
```php
/**
* @property int $id
* @property string $firstName
* @property string $lastName
*
* @extends \Arrayy\Arrayy
*/
class User extends \Arrayy\Arrayy
{
protected $checkPropertyTypes = true;

protected $checkPropertiesMismatchInConstructor = true;
}

/**
* @template TKey of array-key
* @extends AbstractCollection
*/
class UserCollection extends \Arrayy\Collection\AbstractCollection
{
/**
* The type (FQCN) associated with this collection.
*
* @return string
*/
public function getType()
{
return User::class;
}
}

$m = User::meta();

$data = static function () use ($m) {
yield new User([$m->id => 40, $m->firstName => 'Foo', $m->lastName => 'Moelleken']);
yield new User([$m->id => 30, $m->firstName => 'Sven', $m->lastName => 'Moelleken']);
yield new User([$m->id => 20, $m->firstName => 'Lars', $m->lastName => 'Moelleken']);
yield new User([$m->id => 10, $m->firstName => 'Lea', $m->lastName => 'Moelleken']);
};

$users = UserCollection::createFromGeneratorFunction($data);
$names = $users
->filter(static function (User $user): bool {
return $user->id <= 30;
})
->customSortValuesImmutable(static function (User $a, User $b): int {
return $a->firstName <=> $b->firstName;
})
->map(static function (User $user): string {
return $user->firstName;
})
->implode(';');

static::assertSame('Lars;Lea;Sven', $names);
```

## Implemented Interfaces

`Arrayy\Arrayy` implements the `IteratorAggregate` interface, meaning that
`foreach` can be used with an instance of the class:

``` php
$arrayy = a(['fòôbàř', 'foo']);
foreach ($arrayy as $value) {
echo $value;
}
// 'fòôbàř'
// 'foo'
```

It implements the `Countable` interface, enabling the use of `count()` to
retrieve the number of elements in the array:

``` php
$arrayy = a(['fòô', 'foo']);
count($arrayy); // 2
```

## PHP 5.6 Creation

As of PHP 5.6, [`use function`](https://wiki.php.net/rfc/use_function) is
available for importing functions. Arrayy exposes a namespaced function,
`Arrayy\create`, which emits the same behaviour as `Arrayy\Arrayy::create()`.
If running PHP 5.6, or another runtime that supports the `use function` syntax,
you can take advantage of an even simpler API as seen below:

``` php
use function Arrayy\create as a;

// Instead of: A::create(['fòô', 'bàř'])->reverse()->implode();
a(['fòô', 'bàř'])->reverse()->implode(','); // 'bàř,fòô'
```

## Collections

If you need to group objects together, it's not a good idea
to use a simple array or Arrayy object. For these cases you can use the ```AbstractCollection```
class.

It will throw a ```InvalidArgumentException``` if you try to add a non valid object into the collection.

e.g.: "YOURCollection.php" (see example ```/tests/CollectionTest.php``` on github)
```php
use Arrayy\Collection\AbstractCollection;

/**
* @extends AbstractCollection
*/
class YOURCollection extends AbstractCollection
{
/**
* The type (FQCN) associated with this collection.
*
* @return string
*/
public function getType(): string
{
return YOURInterface::class;
}
}

$YOURobject1 = new YOURClass();
$YOURobject2 = new YOURClass();

$YOURcollection = new YOURCollection($YOURobject1);
$YOURcollection->add($YOURobject2); // add one more object

// Or, you can use an array of objects.
//
// $YOURcollection = new YOURCollection([$YOURobject1, $YOURobject2]);

// Or, if you don't want to create new classes ...
// ... and you don't need typehints and autocompletion via classes.
//
// $YOURcollection = \Arrayy\Collection::construct(YOURInterface::class, [$YOURobject1]);
// $YOURcollection->add($YOURobject2); // add one more object

// Or, if you don't like classes at all. ;-)
//
// $YOURcollection = \Arrayy\collection(YOURInterface::class, [$YOURobject1]);
// $YOURcollection->add($YOURobject2); // add one more object

foreach ($YOURcollection as $YOURobject) {
if ($YOURobject instanceof YOURInterface) {
// Do something with $YOURobject
}
}
```

You can also use "dot-notation" to get data from your collections e.g.
```$YOURcollection->get('3123.foo.bar');```

## Pre-Defined Typified Collections

### simple example

This will throw a "TypeError"-Exception.

```php
use Arrayy\Type\StringCollection;

$collection = new StringCollection(['A', 'B', 'C', 1]);
```

### complex example

This will NOT throw a "TypeError"-Exception.

```php
use Arrayy\Type\IntCollection;
use Arrayy\Type\StringCollection;
use Arrayy\Type\InstancesCollection;
use Arrayy\Type\TypeInterface;

$collection = InstancesCollection::construct(
TypeInterface::class,
[new StringCollection(['A', 'B', 'C']), new IntCollection([1])]
);

$collection->toArray(true); // [['A', 'B', 'C'], [1]]
```

## Convert JSON-Data into Objects (Collection)

```php

namespace Arrayy\tests\Collection;

use Arrayy\Collection\AbstractCollection;

/**
* @extends AbstractCollection
*/
class UserDataCollection extends AbstractCollection
{
/**
* The type (FQCN) associated with this collection.
*
* @return string
*/
public function getType()
{
return \Arrayy\tests\UserData::class;
}
}

$json = '[{"id":1,"firstName":"Lars","lastName":"Moelleken","city":{"name":"Düsseldorf","plz":null,"infos":["lall"]}}, {"id":1,"firstName":"Sven","lastName":"Moelleken","city":{"name":"Köln","plz":null,"infos":["foo"]}}]';
$userDataCollection = UserDataCollection::createFromJsonMapper($json);

/** @var \Arrayy\tests\UserData[] $userDatas */
$userDataCollection->getAll();

$userData0 = $userDataCollection[0];
echo $userData0->firstName; // 'Lars'
$userData0->city; // CityData::class
echo $userData0->city->name; // 'Düsseldorf'

$userData1 = $userDataCollection[1];
echo $userData1->firstName; // 'Sven'
$userData1->city; // CityData::class
echo $userData1->city->name; // 'Köln'
```

## Class methods

##### use a "default object"

Creates an Arrayy object.

```php
$arrayy = new Arrayy(array('fòô', 'bàř')); // Arrayy['fòô', 'bàř']
```

##### create(array $array) : Arrayy (Immutable)

Creates an Arrayy object, via static "create()"-method

```php
$arrayy = A::create(array('fòô', 'bàř')); // Arrayy['fòô', 'bàř']
```

##### createByReference(array &$array) : Arrayy (Mutable)

WARNING: Creates an Arrayy object by reference.

```php
$array = array('fòô', 'bàř');
$arrayy = A::createByReference($array); // Arrayy['fòô', 'bàř']
```

##### createFromJson(string $json) : Arrayy (Immutable)

Create an new Arrayy object via JSON.

```php
$str = '{"firstName":"John", "lastName":"Doe"}';
$arrayy = A::createFromJson($str); // Arrayy['firstName' => 'John', 'lastName' => 'Doe']
```

##### createFromJsonMapper(string $json) : Arrayy (Immutable)

Create an new Arrayy object via JSON and fill sub-objects is possible.

```php

*/
class UserData extends \Arrayy\Arrayy
{
protected $checkPropertyTypes = true;

protected $checkForMissingPropertiesInConstructor = true;
}

/**
* @property string|null $plz
* @property string $name
* @property string[] $infos
*
* @extends \Arrayy\Arrayy
*/
class CityData extends \Arrayy\Arrayy
{
protected $checkPropertyTypes = true;

protected $checkPropertiesMismatchInConstructor = true;

protected $checkForMissingPropertiesInConstructor = true;

protected $checkPropertiesMismatch = true;
}

$json = '{"id":1,"firstName":"Lars","lastName":"Moelleken","city":{"name":"Düsseldorf","plz":null,"infos":["lall"]}}';
$userData = UserData::createFromJsonMapper($json);

$userData; // => \Arrayy\tests\UserData::class
echo $userData->firstName; // 'Lars'
$userData->city; // => \Arrayy\tests\CityData::class
echo $userData->city->name; // 'Düsseldorf'
```

##### createFromObject(ArrayAccess $object) : Arrayy (Immutable)

Create an new instance filled with values from an object that have implemented ArrayAccess.

```php
$object = A::create(1, 'foo');
$arrayy = A::createFromObject($object); // Arrayy[1, 'foo']
```

##### createFromObjectVars(\object $object) : Arrayy (Immutable)

Create an new instance filled with values from an object.

```php
$object = new stdClass();
$object->x = 42;
$arrayy = A::createFromObjectVars($object); // Arrayy['x' => 42]
```

##### createWithRange() : Arrayy (Immutable)

Create an new instance containing a range of elements.

```php
$arrayy = A::createWithRange(2, 4); // Arrayy[2, 3, 4]
```

##### createFromGeneratorImmutable() : Arrayy (Immutable)

Create an new instance filled with a copy of values from a "Generator"-object.

WARNING: Need more memory then the "A::createFromGeneratorFunction()" call, because we
will fetch and store all keys and values from the Generator.

```php
$generator = A::createWithRange(2, 4)->getGenerator();
$arrayy = A::createFromGeneratorImmutable($generator); // Arrayy[2, 3, 4]
```

##### createFromGeneratorFunction() : Arrayy (Immutable)

Create an new instance from a callable function which will return a Generator.

```php
$generatorFunction = static function() {
yield from A::createWithRange(2, 4)->getArray();
};
$arrayy = A::createFromGeneratorFunction($generatorFunction); // Arrayy[2, 3, 4]
```

##### createFromString(string $str) : Arrayy (Immutable)

Create an new Arrayy object via string.

```php
$arrayy = A::createFromString(' foo, bar '); // Arrayy['foo', 'bar']
```

## Instance Methods

Arrayy: All examples below make use of PHP 5.6
function importing, and PHP 5.4 short array syntax. For further details,
see the documentation for the create method above, as well as the notes
on PHP 5.6 creation.

##### "set an array value"

```php
$arrayy = a(['fòô' => 'bàř']);
$arrayy['foo'] = 'bar';
var_dump($arrayy); // Arrayy['fòô' => 'bàř', 'foo' => 'bar']
```

##### "get an array value"

```php
$arrayy = a(['fòô' => 'bàř']);
var_dump($arrayy['fòô']); // 'bàř'
```

##### "get the array"

```php
$arrayy = a(['fòô' => 'bàř']);
var_dump($arrayy->getArray()); // ['fòô' => 'bàř']
```

##### "delete an array value"

```php
$arrayy = a(['fòô' => 'bàř', 'lall']);
unset($arrayy['fòô']);
var_dump($arrayy); // Arrayy[0 => 'lall']
```

##### "check if an array value is-set"

```php
$arrayy = a(['fòô' => 'bàř']);
isset($arrayy['fòô']); // true
```

##### "simple loop with an Arrayy-object"

```php
$arrayy = a(['fòô' => 'bàř']);
foreach ($arrayy) as $key => $value) {
echo $key . ' | ' . $value; // fòô | bàř
}
```

## Arrayy methods

add
append
appendArrayValues
appendImmutable
appendToEachKey
appendToEachValue
arsort
arsortImmutable
asort
asortImmutable
at
average
changeKeyCase
changeSeparator
chunk
clean
clear
contains
containsCaseInsensitive
containsKey
containsKeys
containsKeysRecursive
containsOnly
containsValue
containsValueRecursive
containsValues
count
countValues
create
createByReference
createFromArray
createFromGeneratorFunction
createFromGeneratorImmutable
createFromJson
createFromJsonMapper
createFromObject
createFromObjectVars
createFromString
createFromTraversableImmutable
createWithRange
current
customSortKeys
customSortKeysImmutable
customSortValues
customSortValuesImmutable
delete
diff
diffKey
diffKeyAndValue
diffRecursive
diffReverse
divide
each
end
exchangeArray
exists
fillWithDefaults
filter
filterBy
find
findBy
first
firstKey
firstsImmutable
firstsKeys
firstsMutable
flatten
flip
get
getAll
getArray
getArrayCopy
getBackwardsGenerator
getColumn
getFlags
getGenerator
getGeneratorByReference
getIterator
getIteratorClass
getKeys
getList
getObject
getPhpDocPropertiesFromClass
getRandom
getRandomKey
getRandomKeys
getRandomValue
getRandomValues
getValues
getValuesYield
group
has
hasValue
implode
implodeKeys
indexBy
indexOf
initial
intersection
intersectionMulti
intersects
invoke
isAssoc
isEmpty
isEqual
isMultiArray
isNumeric
isSequential
jsonSerialize
key
keyExists
keys
krsort
krsortImmutable
ksort
ksortImmutable
last
lastKey
lastsImmutable
lastsMutable
length
map
matches
matchesAny
max
mergeAppendKeepIndex
mergeAppendNewIndex
mergePrependKeepIndex
mergePrependNewIndex
meta
min
mostUsedValue
mostUsedValues
moveElement
moveElementToFirstPlace
moveElementToLastPlace
natcasesort
natcasesortImmutable
natsort
natsortImmutable
next
nth
offsetExists
offsetGet
offsetSet
offsetUnset
only
pad
partition
pop
prepend
prependImmutable
prependToEachKey
prependToEachValue
pull
push
randomImmutable
randomKey
randomKeys
randomMutable
randomValue
randomValues
randomWeighted
reduce
reduce_dimension
reindex
reject
remove
removeElement
removeFirst
removeLast
removeValue
repeat
replace
replaceAllKeys
replaceAllValues
replaceKeys
replaceOneValue
replaceValues
rest
reverse
reverseKeepIndex
rsort
rsortImmutable
searchIndex
searchValue
serialize
set
setAndGet
setFlags
setIteratorClass
shift
shuffle
size
sizeIs
sizeIsBetween
sizeIsGreaterThan
sizeIsLessThan
sizeRecursive
slice
sort
sortImmutable
sortKeys
sortKeysImmutable
sortValueKeepIndex
sortValueNewIndex
sorter
splice
split
stripEmpty
swap
toArray
toJson
toList
toPermutation
toString
uasort
uasortImmutable
uksort
uksortImmutable
unique
uniqueKeepIndex
uniqueNewIndex
unserialize
unshift
validate
values
walk
where

## add(mixed $value, int|string|null $key): static

Add new values (optional using dot-notation).

**Parameters:**
- `T $value`
- `TKey $key`

**Return:**
- `static

(Immutable) Return this Arrayy object, with the appended values.

`

--------

## append(mixed $value, mixed $key): $this

Append a (key) + value to the current array.

EXAMPLE:
a(['fòô' => 'bàř'])->append('foo'); // Arrayy['fòô' => 'bàř', 0 => 'foo']

**Parameters:**
- `T $value`
- `TKey|null $key`

**Return:**
- `$this

(Mutable) Return this Arrayy object, with the appended values.

`

--------

## appendArrayValues(array $values, mixed $key): $this

Append a (key) + values to the current array.

EXAMPLE:
a(['fòô' => ['bàř']])->appendArrayValues(['foo1', 'foo2'], 'fòô'); // Arrayy['fòô' => ['bàř', 'foo1', 'foo2']]

**Parameters:**
- `array $values`
- `TKey|null $key`

**Return:**
- `$this

(Mutable) Return this Arrayy object, with the appended values.

`

--------

## appendImmutable(mixed $value, mixed $key): $this

Append a (key) + value to the current array.

EXAMPLE:
a(['fòô' => 'bàř'])->appendImmutable('foo')->getArray(); // ['fòô' => 'bàř', 0 => 'foo']

**Parameters:**
- `T $value`
- `TKey $key`

**Return:**
- `$this

(Immutable) Return this Arrayy object, with the appended values.

`

--------

## appendToEachKey(int|string $prefix): static

Add a suffix to each key.

**Parameters:**
- `int|string $prefix`

**Return:**
- `static

(Immutable) Return an Arrayy object, with the prefixed keys.

`

--------

## appendToEachValue(float|int|string $prefix): static

Add a prefix to each value.

**Parameters:**
- `float|int|string $prefix`

**Return:**
- `static

(Immutable) Return an Arrayy object, with the prefixed values.

`

--------

## arsort(): $this

Sort an array in reverse order and maintain index association.

**Parameters:**
__nothing__

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## arsortImmutable(): $this

Sort an array in reverse order and maintain index association.

**Parameters:**
__nothing__

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## asort(int $sort_flags): $this

Sort the entries by value.

**Parameters:**
- `int $sort_flags [optional]


You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort.

`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## asortImmutable(int $sort_flags): $this

Sort the entries by value.

**Parameters:**
- `int $sort_flags [optional]


You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort.

`

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## at(\Closure $closure): static

Iterate over the current array and execute a callback for each loop.

EXAMPLE:
$result = A::create();
$closure = function ($value, $key) use ($result) {
$result[$key] = ':' . $value . ':';
};
a(['foo', 'bar' => 'bis'])->at($closure); // Arrayy[':foo:', 'bar' => ':bis:']

**Parameters:**
- `\Closure(T , TKey ): mixed $closure`

**Return:**
- `static

(Immutable)

`

--------

## average(int $decimals): float|int

Returns the average value of the current array.

EXAMPLE:
a([-9, -8, -7, 1.32])->average(2); // -5.67

**Parameters:**
- `int $decimals

The number of decimal-numbers to return.

`

**Return:**
- `float|int

The average value.

`

--------

## changeKeyCase(int $case): static

Changes all keys in an array.

**Parameters:**
- `int $case [optional]

Either CASE_UPPER

or CASE_LOWER (default)

`

**Return:**
- `static

(Immutable)

`

--------

## changeSeparator(string $separator): $this

Change the path separator of the array wrapper.

By default, the separator is: "."

**Parameters:**
- `non-empty-string $separator

Separator to set.

`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## chunk(int $size, bool $preserveKeys): static|static[]

Create a chunked version of the current array.

EXAMPLE:
a([-9, -8, -7, 1.32])->chunk(2); // Arrayy[[-9, -8], [-7, 1.32]]

**Parameters:**
- `int $size

Size of each chunk.

`
- `bool $preserveKeys

Whether array keys are preserved or no.

`

**Return:**
- `static|static[]

(Immutable) A new array of chunks from the original array.

`

--------

## clean(): static

Clean all falsy values from the current array.

EXAMPLE:
a([-8 => -9, 1, 2 => false])->clean(); // Arrayy[-8 => -9, 1]

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## clear(int|int[]|string|string[]|null $key): $this

WARNING!!! -> Clear the current full array or a $key of it.

EXAMPLE:
a([-8 => -9, 1, 2 => false])->clear(); // Arrayy[]

**Parameters:**
- `int|int[]|string|string[]|null $key`

**Return:**
- `$this

(Mutable) Return this Arrayy object, with an empty array.

`

--------

## contains(float|int|string $value, bool $recursive, bool $strict): bool

Check if an item is in the current array.

EXAMPLE:
a([1, true])->contains(true); // true

**Parameters:**
- `float|int|string $value`
- `bool $recursive`
- `bool $strict`

**Return:**
- `bool`

--------

## containsCaseInsensitive(mixed $value, bool $recursive): bool

Check if an (case-insensitive) string is in the current array.

EXAMPLE:
a(['E', 'é'])->containsCaseInsensitive('É'); // true

**Parameters:**
- `mixed $value`
- `bool $recursive`

**Return:**
- `bool`

--------

## containsKey(int|string $key): bool

Check if the given key/index exists in the array.

EXAMPLE:
a([1 => true])->containsKey(1); // true

**Parameters:**
- `int|string $key

key/index to search for

`

**Return:**
- `bool

Returns true if the given key/index exists in the array, false otherwise.

`

--------

## containsKeys(array $needles, bool $recursive): bool

Check if all given needles are present in the array as key/index.

EXAMPLE:
a([1 => true])->containsKeys(array(1 => 0)); // true

**Parameters:**
- `array $needles

The keys you are searching for.

`
- `bool $recursive`

**Return:**
- `bool

Returns true if all the given keys/indexes exists in the array, false otherwise.

`

--------

## containsKeysRecursive(array $needles): bool

Check if all given needles are present in the array as key/index.

**Parameters:**
- `array $needles

The keys you are searching for.

`

**Return:**
- `bool

Returns true if all the given keys/indexes exists in the array, false otherwise.

`

--------

## containsOnly(float|int|string $value, bool $recursive, bool $strict): bool

Check if an item is in the current array.

EXAMPLE:
a([1, true])->containsOnly(true); // false

**Parameters:**
- `float|int|string $value`
- `bool $recursive`
- `bool $strict`

**Return:**
- `bool`

--------

## containsValue(float|int|string $value): bool

alias: for "Arrayy->contains()"

**Parameters:**
- `float|int|string $value`

**Return:**
- `bool`

--------

## containsValueRecursive(float|int|string $value): bool

alias: for "Arrayy->contains($value, true)"

**Parameters:**
- `float|int|string $value`

**Return:**
- `bool`

--------

## containsValues(array $needles): bool

Check if all given needles are present in the array.

EXAMPLE:
a([1, true])->containsValues(array(1, true)); // true

**Parameters:**
- `array $needles`

**Return:**
- `bool

Returns true if all the given values exists in the array, false otherwise.

`

--------

## count(int $mode): int

Counts all elements in an array, or something in an object.

EXAMPLE:
a([-9, -8, -7, 1.32])->count(); // 4


For objects, if you have SPL installed, you can hook into count() by implementing interface {@see \Countable}.
The interface has exactly one method, {@see \Countable::count()}, which returns the return value for the count()
function. Please see the {@see \Array} section of the manual for a detailed explanation of how arrays are
implemented and used in PHP.

**Parameters:**
- `int $mode [optional] If the optional mode parameter is set to
COUNT_RECURSIVE (or 1), count
will recursively count the array. This is particularly useful for
counting all the elements of a multidimensional array. count does not detect infinite recursion.`

**Return:**
- `int


The number of elements in var, which is
typically an array, since anything else will have one
element.



If var is not an array or an object with
implemented Countable interface,
1 will be returned.
There is one exception, if var is &null;,
0 will be returned.



Caution: count may return 0 for a variable that isn't set,
but it may also return 0 for a variable that has been initialized with an
empty array. Use isset to test if a variable is set.

`

--------

## countValues(): static

Counts all the values of an array

**Parameters:**
__nothing__

**Return:**
- `static


(Immutable)
An associative Arrayy-object of values from input as
keys and their count as value.

`

--------

## create(mixed $data, string $iteratorClass, bool $checkPropertiesInConstructor): static

Creates an Arrayy object.

**Parameters:**
- `mixed $data`
- `class-string<\Arrayy\ArrayyIterator> $iteratorClass`
- `bool $checkPropertiesInConstructor`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createByReference(array $array): $this

WARNING: Creates an Arrayy object by reference.

**Parameters:**
- `array $array`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## createFromArray(array $array): static

Create an new Arrayy object via JSON.

**Parameters:**
- `array $array`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createFromGeneratorFunction(callable $generatorFunction): static

Create an new instance from a callable function which will return an Generator.

**Parameters:**
- `callable(): \Generator $generatorFunction`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createFromGeneratorImmutable(\Generator $generator): static

Create an new instance filled with a copy of values from a "Generator"-object.

**Parameters:**
- `\Generator $generator`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createFromJson(string $json): static

Create an new Arrayy object via JSON.

**Parameters:**
- `string $json`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createFromJsonMapper(string $json): static

**Parameters:**
- `string $json`

**Return:**
- `static

(Immutable)

`

--------

## createFromObject(\Traversable $object): static

Create an new instance filled with values from an object that is iterable.

**Parameters:**
- `\Traversable $object

iterable object

`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createFromObjectVars(object $object): static

Create an new instance filled with values from an object.

**Parameters:**
- `object $object`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createFromString(string $str, string|null $delimiter, string|null $regEx): static

Create an new Arrayy object via string.

**Parameters:**
- `string $str

The input string.

`
- `non-empty-string|null $delimiter

The boundary string.

`
- `string|null $regEx

Use the $delimiter or the $regEx, so if $pattern is null, $delimiter will be
used.

`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createFromTraversableImmutable(\Traversable $traversable, bool $use_keys): static

Create an new instance filled with a copy of values from a "Traversable"-object.

**Parameters:**
- `\Traversable<(array-key|TKey), T> $traversable`
- `bool $use_keys [optional]


Whether to use the iterator element keys as index.

`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## createWithRange(float|int|string $low, float|int|string $high, float|int $step): static

Create an new instance containing a range of elements.

**Parameters:**
- `float|int|string $low

First value of the sequence.

`
- `float|int|string $high

The sequence is ended upon reaching the end value.

`
- `float|int $step

Used as the increment between elements in the sequence.

`

**Return:**
- `static

(Immutable) Returns an new instance of the Arrayy object.

`

--------

## current(): false|mixed

Gets the element of the array at the current internal iterator position.

**Parameters:**
__nothing__

**Return:**
- `false|mixed`

--------

## customSortKeys(callable $callable): $this

Custom sort by index via "uksort".

EXAMPLE:
$callable = function ($a, $b) {
if ($a == $b) {
return 0;
}
return ($a > $b) ? 1 : -1;
};
$arrayy = a(['three' => 3, 'one' => 1, 'two' => 2]);
$resultArrayy = $arrayy->customSortKeys($callable); // Arrayy['one' => 1, 'three' => 3, 'two' => 2]

**Parameters:**
- `callable $callable`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## customSortKeysImmutable(callable $callable): $this

Custom sort by index via "uksort".

**Parameters:**
- `callable $callable`

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## customSortValues(callable $callable): $this

Custom sort by value via "usort".

EXAMPLE:
$callable = function ($a, $b) {
if ($a == $b) {
return 0;
}
return ($a > $b) ? 1 : -1;
};
$arrayy = a(['three' => 3, 'one' => 1, 'two' => 2]);
$resultArrayy = $arrayy->customSortValues($callable); // Arrayy[1, 2, 3]

**Parameters:**
- `callable $callable`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## customSortValuesImmutable(callable $callable): $this

Custom sort by value via "usort".

**Parameters:**
- `callable $callable`

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## delete(int|int[]|string|string[] $keyOrKeys): void

Delete the given key or keys.

**Parameters:**
- `int|int[]|string|string[] $keyOrKeys`

**Return:**
- `void`

--------

## diff(array $array): static

Return elements where the values that are only in the current array.

EXAMPLE:
a([1 => 1, 2 => 2])->diff([1 => 1]); // Arrayy[2 => 2]

**Parameters:**
- `array ...$array`

**Return:**
- `static

(Immutable)

`

--------

## diffKey(array $array): static

Return elements where the keys are only in the current array.

**Parameters:**
- `array ...$array`

**Return:**
- `static

(Immutable)

`

--------

## diffKeyAndValue(array $array): static

Return elements where the values and keys are only in the current array.

**Parameters:**
- `array ...$array`

**Return:**
- `static

(Immutable)

`

--------

## diffRecursive(array $array, array|\Generator|null $helperVariableForRecursion): static

Return elements where the values are only in the current multi-dimensional array.

EXAMPLE:
a([1 => [1 => 1], 2 => [2 => 2]])->diffRecursive([1 => [1 => 1]]); // Arrayy[2 => [2 => 2]]

**Parameters:**
- `array $array`
- `null|array|\Generator $helperVariableForRecursion

(only for internal usage)

`

**Return:**
- `static

(Immutable)

`

--------

## diffReverse(array $array): static

Return elements where the values that are only in the new $array.

EXAMPLE:
a([1 => 1])->diffReverse([1 => 1, 2 => 2]); // Arrayy[2 => 2]

**Parameters:**
- `array $array`

**Return:**
- `static

(Immutable)

`

--------

## divide(): static

Divide an array into two arrays. One with keys and the other with values.

EXAMPLE:
a(['a' => 1, 'b' => ''])->divide(); // Arrayy[Arrayy['a', 'b'], Arrayy[1, '']]

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## each(\Closure $closure): static

Iterate over the current array and modify the array's value.

EXAMPLE:
$result = A::create();
$closure = function ($value) {
return ':' . $value . ':';
};
a(['foo', 'bar' => 'bis'])->each($closure); // Arrayy[':foo:', 'bar' => ':bis:']

**Parameters:**
- `\Closure(T , ?TKey ): T $closure`

**Return:**
- `static

(Immutable)

`

--------

## end(): false|mixed

Sets the internal iterator to the last element in the array and returns this element.

**Parameters:**
__nothing__

**Return:**
- `false|mixed`

--------

## exchangeArray(array|mixed|static $data): array

Exchange the array for another one.

**Parameters:**
- `T|array|self $data 1. use the current array, if it's a array
2. fallback to empty array, if there is nothing
3. call "getArray()" on object, if there is a "Arrayy"-object
4. call "createFromObject()" on object, if there is a "\Traversable"-object
5. call "__toArray()" on object, if the method exists
6. cast a string or object with "__toString()" into an array
7. throw a "InvalidArgumentException"-Exception`

**Return:**
- `array`

--------

## exists(\Closure $closure): bool

Check if a value is in the current array using a closure.

EXAMPLE:
$callable = function ($value, $key) {
return 2 === $key and 'two' === $value;
};
a(['foo', 2 => 'two'])->exists($callable); // true

**Parameters:**
- `\Closure(T , TKey ): bool $closure`

**Return:**
- `bool

Returns true if the given value is found, false otherwise.

`

--------

## fillWithDefaults(int $num, mixed $default): static

Fill the array until "$num" with "$default" values.

EXAMPLE:
a(['bar'])->fillWithDefaults(3, 'foo'); // Arrayy['bar', 'foo', 'foo']

**Parameters:**
- `int $num`
- `T $default`

**Return:**
- `static

(Immutable)

`

--------

## filter(\Closure|null $closure, int $flag): static

Find all items in an array that pass the truth test.

EXAMPLE:
$closure = function ($value) {
return $value % 2 !== 0;
}
a([1, 2, 3, 4])->filter($closure); // Arrayy[0 => 1, 2 => 3]

**Parameters:**
- `null|\Closure(T , TKey = default): bool|\Closure(T ): bool|\Closure(TKey ): bool $closure [optional]


The callback function to use



If no callback is supplied, all entries of
input equal to false (see
converting to
boolean) will be removed.

`
- `int $flag [optional]


Flag determining what arguments are sent to callback:




  • ARRAY_FILTER_USE_KEY (1) - pass key as the only argument
    to callback instead of the value


  • ARRAY_FILTER_USE_BOTH (2) - pass both value and key as
    arguments to callback instead of the value

`

**Return:**
- `static

(Immutable)

`

--------

## filterBy(string $property, mixed $value, string|null $comparisonOp): static

Filters an array of objects (or a numeric array of associative arrays) based on the value of a particular
property within that.

**Parameters:**
- `string $property`
- `array|T $value`
- `string|null $comparisonOp


'eq' (equals),

'gt' (greater),

'gte' || 'ge' (greater or equals),

'lt' (less),

'lte' || 'le' (less or equals),

'ne' (not equals),

'contains',

'notContains',

'newer' (via strtotime),

'older' (via strtotime),

`

**Return:**
- `static

(Immutable)

`

--------

## find(\Closure $closure): false|mixed

Find the first item in an array that passes the truth test, otherwise return false.

EXAMPLE:
$search = 'foo';
$closure = function ($value, $key) use ($search) {
return $value === $search;
};
a(['foo', 'bar', 'lall'])->find($closure); // 'foo'

**Parameters:**
- `\Closure(T , TKey ): bool $closure`

**Return:**
- `false|mixed

Return false if we did not find the value.

`

--------

## findBy(string $property, mixed $value, string $comparisonOp): static

find by ...

EXAMPLE:
$array = [
0 => ['id' => 123, 'name' => 'foo', 'group' => 'primary', 'value' => 123456, 'when' => '2014-01-01'],
1 => ['id' => 456, 'name' => 'bar', 'group' => 'primary', 'value' => 1468, 'when' => '2014-07-15'],
];
a($array)->filterBy('name', 'foo'); // Arrayy[0 => ['id' => 123, 'name' => 'foo', 'group' => 'primary', 'value' => 123456, 'when' => '2014-01-01']]

**Parameters:**
- `string $property`
- `array|T $value`
- `string $comparisonOp`

**Return:**
- `static

(Immutable)

`

--------

## first(): mixed|null

Get the first value from the current array.

EXAMPLE:
a([2 => 'foo', 3 => 'bar', 4 => 'lall'])->first(); // 'foo'

**Parameters:**
__nothing__

**Return:**
- `mixed|null

Return null if there wasn't a element.

`

--------

## firstKey(): mixed|null

Get the first key from the current array.

**Parameters:**
__nothing__

**Return:**
- `mixed|null

Return null if there wasn't a element.

`

--------

## firstsImmutable(int|null $number): static

Get the first value(s) from the current array.

And will return an empty array if there was no first entry.

EXAMPLE:
a([2 => 'foo', 3 => 'bar', 4 => 'lall'])->firstsImmutable(2); // Arrayy[0 => 'foo', 1 => 'bar']

**Parameters:**
- `int|null $number

How many values you will take?

`

**Return:**
- `static

(Immutable)

`

--------

## firstsKeys(int|null $number): static

Get the first value(s) from the current array.

And will return an empty array if there was no first entry.

**Parameters:**
- `int|null $number

How many values you will take?

`

**Return:**
- `static

(Immutable)

`

--------

## firstsMutable(int|null $number): $this

Get and remove the first value(s) from the current array.

And will return an empty array if there was no first entry.

EXAMPLE:
a([2 => 'foo', 3 => 'bar', 4 => 'lall'])->firstsMutable(); // 'foo'

**Parameters:**
- `int|null $number

How many values you will take?

`

**Return:**
- `$this

(Mutable)

`

--------

## flatten(string $delimiter, string $prepend, array|null $items): array

Flatten an array with the given character as a key delimiter.

EXAMPLE:
$dot = a(['foo' => ['abc' => 'xyz', 'bar' => ['baz']]]);
$flatten = $dot->flatten();
$flatten['foo.abc']; // 'xyz'
$flatten['foo.bar.0']; // 'baz'

**Parameters:**
- `string $delimiter`
- `string $prepend`
- `array|null $items`

**Return:**
- `array`

--------

## flip(): static

Exchanges all keys with their associated values in an array.

EXAMPLE:
a([0 => 'foo', 1 => 'bar'])->flip(); // Arrayy['foo' => 0, 'bar' => 1]

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## get(int|string $key, mixed $fallback, array|null $array, bool $useByReference): mixed|static

Get a value from an array (optional using dot-notation).

EXAMPLE:
$arrayy = a(['user' => ['lastname' => 'Moelleken']]);
$arrayy->get('user.lastname'); // 'Moelleken'
// ---
$arrayy = new A();
$arrayy['user'] = ['lastname' => 'Moelleken'];
$arrayy['user.firstname'] = 'Lars';
$arrayy['user']['lastname']; // Moelleken
$arrayy['user.lastname']; // Moelleken
$arrayy['user.firstname']; // Lars

**Parameters:**
- `TKey $key

The key to look for.

`
- `mixed $fallback

Value to fallback to.

`
- `array|null $array

The array to get from, if it's set to "null" we use the current array from the
class.

`
- `bool $useByReference`

**Return:**
- `mixed|static`

--------

## getAll(): array

alias: for "Arrayy->toArray()"

**Parameters:**
__nothing__

**Return:**
- `array`

--------

## getArray(bool $convertAllArrayyElements, bool $preserveKeys): array

Get the current array from the "Arrayy"-object.

alias for "toArray()"

**Parameters:**
- `bool $convertAllArrayyElements


Convert all Child-"Arrayy" objects also to arrays.

`
- `bool $preserveKeys


e.g.: A generator maybe return the same key more than once,
so maybe you will ignore the keys.

`

**Return:**
- `array`

--------

## getArrayCopy(): array

Creates a copy of the ArrayyObject.

**Parameters:**
__nothing__

**Return:**
- `array`

--------

## getBackwardsGenerator(): Generator

Get the current array from the "Arrayy"-object as generator.

**Parameters:**
__nothing__

**Return:**
- `\Generator`

--------

## getColumn(int|string|null $columnKey, int|string|null $indexKey): static

Returns the values from a single column of the input array, identified by
the $columnKey, can be used to extract data-columns from multi-arrays.

EXAMPLE:
a([['foo' => 'bar', 'id' => 1], ['foo => 'lall', 'id' => 2]])->getColumn('foo', 'id'); // Arrayy[1 => 'bar', 2 => 'lall']

INFO: Optionally, you may provide an $indexKey to index the values in the returned
array by the values from the $indexKey column in the input array.

**Parameters:**
- `int|string|null $columnKey`
- `int|string|null $indexKey`

**Return:**
- `static

(Immutable)

`

--------

## getFlags():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## getGenerator(): Generator

Get the current array from the "Arrayy"-object as generator.

**Parameters:**
__nothing__

**Return:**
- `\Generator`

--------

## getGeneratorByReference(): Generator

Get the current array from the "Arrayy"-object as generator by reference.

**Parameters:**
__nothing__

**Return:**
- `\Generator`

--------

## getIterator(): Iterator

Returns a new iterator, thus implementing the \Iterator interface.

EXAMPLE:
a(['foo', 'bar'])->getIterator(); // ArrayyIterator['foo', 'bar']

**Parameters:**
__nothing__

**Return:**
- `\Iterator

An iterator for the values in the array.

`

--------

## getIteratorClass(): string

Gets the iterator classname for the ArrayObject.

**Parameters:**
__nothing__

**Return:**
- `string`

--------

## getKeys(): static

alias: for "Arrayy->keys()"

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## getList(bool $convertAllArrayyElements): array

Get the current array from the "Arrayy"-object as list.

alias for "toList()"

**Parameters:**
- `bool $convertAllArrayyElements


Convert all Child-"Arrayy" objects also to arrays.

`

**Return:**
- `array`

--------

## getObject(): stdClass

Get the current array from the "Arrayy"-object as object.

**Parameters:**
__nothing__

**Return:**
- `\stdClass`

--------

## getPhpDocPropertiesFromClass(): array|\TypeCheckArray

**Parameters:**
__nothing__

**Return:**
- `array|\TypeCheckArray`

--------

## getRandom(): static

alias: for "Arrayy->randomImmutable()"

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## getRandomKey(): mixed|null

alias: for "Arrayy->randomKey()"

**Parameters:**
__nothing__

**Return:**
- `mixed|null

Get a key/index or null if there wasn't a key/index.

`

--------

## getRandomKeys(int $number): static

alias: for "Arrayy->randomKeys()"

**Parameters:**
- `int $number`

**Return:**
- `static

(Immutable)

`

--------

## getRandomValue(): mixed|null

alias: for "Arrayy->randomValue()"

**Parameters:**
__nothing__

**Return:**
- `mixed|null

Get a random value or null if there wasn't a value.

`

--------

## getRandomValues(int $number): static

alias: for "Arrayy->randomValues()"

**Parameters:**
- `int $number`

**Return:**
- `static

(Immutable)

`

--------

## getValues(): static

Gets all values.

**Parameters:**
__nothing__

**Return:**
- `static

The values of all elements in this array, in the order they
appear in the array.

`

--------

## getValuesYield(): Generator

Gets all values via Generator.

**Parameters:**
__nothing__

**Return:**
- `\Generator

The values of all elements in this array, in the order they
appear in the array as Generator.

`

--------

## group(callable|int|string $grouper, bool $saveKeys): static

Group values from a array according to the results of a closure.

**Parameters:**
- `\Closure(T , TKey ): TKey|TKey $grouper

A callable function name.

`
- `bool $saveKeys`

**Return:**
- `static

(Immutable)

`

--------

## has(mixed $key): bool

Check if an array has a given key.

**Parameters:**
- `null|TKey|TKey[] $key`

**Return:**
- `bool`

--------

## hasValue(mixed $value): bool

Check if an array has a given value.

INFO: If you need to search recursive please use ```contains($value, true)```.

**Parameters:**
- `T $value`

**Return:**
- `bool`

--------

## implode(string $glue, string $prefix): string

Implodes the values of this array.

EXAMPLE:
a([0 => -9, 1, 2])->implode('|'); // '-9|1|2'

**Parameters:**
- `string $glue`
- `string $prefix`

**Return:**
- `string`

--------

## implodeKeys(string $glue): string

Implodes the keys of this array.

**Parameters:**
- `string $glue`

**Return:**
- `string`

--------

## indexBy(int|string $key): static

Given a list and an iterate-function that returns
a key for each element in the list (or a property name),
returns an object with an index of each item.

**Parameters:**
- `array- $key`

**Return:**
- `static

(Immutable)

`

--------

## indexOf(mixed $value): false|int|string

alias: for "Arrayy->searchIndex()"

**Parameters:**
- `T $value

The value to search for.

`

**Return:**
- `false|int|string`

--------

## initial(int $to): static

Get everything but the last..$to items.

EXAMPLE:
a([2 => 'foo', 3 => 'bar', 4 => 'lall'])->initial(2); // Arrayy[0 => 'foo']

**Parameters:**
- `int $to`

**Return:**
- `static

(Immutable)

`

--------

## intersection(array $search, bool $keepKeys): static

Return an array with all elements found in input array.

EXAMPLE:
a(['foo', 'bar'])->intersection(['bar', 'baz']); // Arrayy['bar']

**Parameters:**
- `array $search`
- `bool $keepKeys`

**Return:**
- `static

(Immutable)

`

--------

## intersectionMulti(array $array): static

Return an array with all elements found in input array.

**Parameters:**
- `array ...$array`

**Return:**
- `static

(Immutable)

`

--------

## intersects(array $search): bool

Return a boolean flag which indicates whether the two input arrays have any common elements.

EXAMPLE:
a(['foo', 'bar'])->intersects(['föö', 'bär']); // false

**Parameters:**
- `array $search`

**Return:**
- `bool`

--------

## invoke(callable $callable, mixed $arguments): static

Invoke a function on all of an array's values.

**Parameters:**
- `callable $callable`
- `mixed $arguments`

**Return:**
- `static

(Immutable)

`

--------

## isAssoc(bool $recursive): bool

Check whether array is associative or not.

EXAMPLE:
a(['foo' => 'bar', 2, 3])->isAssoc(); // true

**Parameters:**
- `bool $recursive`

**Return:**
- `bool

Returns true if associative, false otherwise.

`

--------

## isEmpty(int|int[]|string|string[]|null $keys): bool

Check if a given key or keys are empty.

**Parameters:**
- `int|int[]|string|string[]|null $keys`

**Return:**
- `bool

Returns true if empty, false otherwise.

`

--------

## isEqual(array $array): bool

Check if the current array is equal to the given "$array" or not.

EXAMPLE:
a(['💩'])->isEqual(['💩']); // true

**Parameters:**
- `array $array`

**Return:**
- `bool`

--------

## isMultiArray(): bool

Check if the current array is a multi-array.

EXAMPLE:
a(['foo' => [1, 2 , 3]])->isMultiArray(); // true

**Parameters:**
__nothing__

**Return:**
- `bool`

--------

## isNumeric(): bool

Check whether array is numeric or not.

**Parameters:**
__nothing__

**Return:**
- `bool

Returns true if numeric, false otherwise.

`

--------

## isSequential(bool $recursive): bool

Check if the current array is sequential [0, 1, 2, 3, 4, 5 ...] or not.

EXAMPLE:
a([0 => 'foo', 1 => 'lall', 2 => 'foobar'])->isSequential(); // true

INFO: If the array is empty we count it as non-sequential.

**Parameters:**
- `bool $recursive`

**Return:**
- `bool`

--------

## jsonSerialize(): array

**Parameters:**
__nothing__

**Return:**
- `array`

--------

## key(): int|string|null

Gets the key/index of the element at the current internal iterator position.

**Parameters:**
__nothing__

**Return:**
- `int|string|null`

--------

## keyExists(int|string $key): bool

Checks if the given key exists in the provided array.

INFO: This method only use "array_key_exists()" if you want to use "dot"-notation,
then you need to use "Arrayy->offsetExists()".

**Parameters:**
- `int|string $key the key to look for`

**Return:**
- `bool`

--------

## keys(bool $recursive, mixed|null $search_values, bool $strict): static

Get all keys from the current array.

EXAMPLE:
a([1 => 'foo', 2 => 'foo2', 3 => 'bar'])->keys(); // Arrayy[1, 2, 3]

**Parameters:**
- `bool $recursive [optional]


Get all keys, also from all sub-arrays from an multi-dimensional array.

`
- `null|T|T[] $search_values [optional]


If specified, then only keys containing these values are returned.

`
- `bool $strict [optional]


Determines if strict comparison (===) should be used during the search.

`

**Return:**
- `static

(Immutable) An array of all the keys in input.

`

--------

## krsort(int $sort_flags): $this

Sort an array by key in reverse order.

**Parameters:**
- `int $sort_flags [optional]


You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort.

`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## krsortImmutable(int $sort_flags): $this

Sort an array by key in reverse order.

**Parameters:**
- `int $sort_flags [optional]


You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort.

`

**Return:**
- `$this

(Immutable)

`

--------

## ksort(int $sort_flags): $this

Sort the entries by key.

**Parameters:**
- `int $sort_flags [optional]


You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort.

`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## ksortImmutable(int $sort_flags): $this

Sort the entries by key.

**Parameters:**
- `int $sort_flags [optional]


You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort.

`

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## last(): mixed|null

Get the last value from the current array.

EXAMPLE:
a([2 => 'foo', 3 => 'bar', 4 => 'lall'])->last(); // 'lall'

**Parameters:**
__nothing__

**Return:**
- `mixed|null

Return null if there wasn't a element.

`

--------

## lastKey(): mixed|null

Get the last key from the current array.

**Parameters:**
__nothing__

**Return:**
- `mixed|null

Return null if there wasn't a element.

`

--------

## lastsImmutable(int|null $number): static

Get the last value(s) from the current array.

EXAMPLE:
a([2 => 'foo', 3 => 'bar', 4 => 'lall'])->lasts(2); // Arrayy[0 => 'bar', 1 => 'lall']

**Parameters:**
- `int|null $number`

**Return:**
- `static

(Immutable)

`

--------

## lastsMutable(int|null $number): $this

Get the last value(s) from the current array.

EXAMPLE:
a([2 => 'foo', 3 => 'bar', 4 => 'lall'])->lasts(2); // Arrayy[0 => 'bar', 1 => 'lall']

**Parameters:**
- `int|null $number`

**Return:**
- `$this

(Mutable)

`

--------

## length(int $mode): int

Count the values from the current array.

alias: for "Arrayy->count()"

**Parameters:**
- `int $mode`

**Return:**
- `int`

--------

## map(callable $callable, bool $useKeyAsSecondParameter, mixed $arguments): static

Apply the given function to the every element of the array,
collecting the results.

EXAMPLE:
a(['foo', 'Foo'])->map('mb_strtoupper'); // Arrayy['FOO', 'FOO']

**Parameters:**
- `callable $callable`
- `bool $useKeyAsSecondParameter`
- `mixed ...$arguments`

**Return:**
- `static

(Immutable) Arrayy object with modified elements.

`

--------

## matches(\Closure $closure): bool

Check if all items in current array match a truth test.

EXAMPLE:
$closure = function ($value, $key) {
return ($value % 2 === 0);
};
a([2, 4, 8])->matches($closure); // true

**Parameters:**
- `\Closure(T , TKey ): bool $closure`

**Return:**
- `bool`

--------

## matchesAny(\Closure $closure): bool

Check if any item in the current array matches a truth test.

EXAMPLE:
$closure = function ($value, $key) {
return ($value % 2 === 0);
};
a([1, 4, 7])->matches($closure); // true

**Parameters:**
- `\Closure(T , TKey ): bool $closure`

**Return:**
- `bool`

--------

## max(): false|float|int|string

Get the max value from an array.

EXAMPLE:
a([-9, -8, -7, 1.32])->max(); // 1.32

**Parameters:**
__nothing__

**Return:**
- `false|float|int|string

Will return false if there are no values.

`

--------

## mergeAppendKeepIndex(array $array, bool $recursive): static

Merge the new $array into the current array.

- keep key,value from the current array, also if the index is in the new $array

EXAMPLE:
$array1 = [1 => 'one', 'foo' => 'bar1'];
$array2 = ['foo' => 'bar2', 3 => 'three'];
a($array1)->mergeAppendKeepIndex($array2); // Arrayy[1 => 'one', 'foo' => 'bar2', 3 => 'three']
// ---
$array1 = [0 => 'one', 1 => 'foo'];
$array2 = [0 => 'foo', 1 => 'bar2'];
a($array1)->mergeAppendKeepIndex($array2); // Arrayy[0 => 'foo', 1 => 'bar2']

**Parameters:**
- `array $array`
- `bool $recursive`

**Return:**
- `static

(Immutable)

`

--------

## mergeAppendNewIndex(array $array, bool $recursive): static

Merge the new $array into the current array.

- replace duplicate assoc-keys from the current array with the key,values from the new $array
- create new indexes

EXAMPLE:
$array1 = [1 => 'one', 'foo' => 'bar1'];
$array2 = ['foo' => 'bar2', 3 => 'three'];
a($array1)->mergeAppendNewIndex($array2); // Arrayy[0 => 'one', 'foo' => 'bar2', 1 => 'three']
// ---
$array1 = [0 => 'one', 1 => 'foo'];
$array2 = [0 => 'foo', 1 => 'bar2'];
a($array1)->mergeAppendNewIndex($array2); // Arrayy[0 => 'one', 1 => 'foo', 2 => 'foo', 3 => 'bar2']

**Parameters:**
- `array $array`
- `bool $recursive`

**Return:**
- `static

(Immutable)

`

--------

## mergePrependKeepIndex(array $array, bool $recursive): static

Merge the the current array into the $array.

- use key,value from the new $array, also if the index is in the current array

EXAMPLE:
$array1 = [1 => 'one', 'foo' => 'bar1'];
$array2 = ['foo' => 'bar2', 3 => 'three'];
a($array1)->mergePrependKeepIndex($array2); // Arrayy['foo' => 'bar1', 3 => 'three', 1 => 'one']
// ---
$array1 = [0 => 'one', 1 => 'foo'];
$array2 = [0 => 'foo', 1 => 'bar2'];
a($array1)->mergePrependKeepIndex($array2); // Arrayy[0 => 'one', 1 => 'foo']

**Parameters:**
- `array $array`
- `bool $recursive`

**Return:**
- `static

(Immutable)

`

--------

## mergePrependNewIndex(array $array, bool $recursive): static

Merge the current array into the new $array.

- replace duplicate assoc-keys from new $array with the key,values from the current array
- create new indexes

EXAMPLE:
$array1 = [1 => 'one', 'foo' => 'bar1'];
$array2 = ['foo' => 'bar2', 3 => 'three'];
a($array1)->mergePrependNewIndex($array2); // Arrayy['foo' => 'bar1', 0 => 'three', 1 => 'one']
// ---
$array1 = [0 => 'one', 1 => 'foo'];
$array2 = [0 => 'foo', 1 => 'bar2'];
a($array1)->mergePrependNewIndex($array2); // Arrayy[0 => 'foo', 1 => 'bar2', 2 => 'one', 3 => 'foo']

**Parameters:**
- `array $array`
- `bool $recursive`

**Return:**
- `static

(Immutable)

`

--------

## meta(): ArrayyMeta|mixed|static

**Parameters:**
__nothing__

**Return:**
- `\ArrayyMeta|mixed|static`

--------

## min(): false|mixed

Get the min value from an array.

EXAMPLE:
a([-9, -8, -7, 1.32])->min(); // -9

**Parameters:**
__nothing__

**Return:**
- `false|mixed

Will return false if there are no values.

`

--------

## mostUsedValue(): mixed|null

Get the most used value from the array.

**Parameters:**
__nothing__

**Return:**
- `mixed|null

(Immutable) Return null if there wasn't an element.

`

--------

## mostUsedValues(int|null $number): static

Get the most used value from the array.

**Parameters:**
- `int|null $number

How many values you will take?

`

**Return:**
- `static

(Immutable)

`

--------

## moveElement(int|string $from, int $to): static

Move an array element to a new index.

EXAMPLE:
$arr2 = new A(['A' => 'a', 'B' => 'b', 'C' => 'c', 'D' => 'd', 'E' => 'e']);
$newArr2 = $arr2->moveElement('D', 1); // Arrayy['A' => 'a', 'D' => 'd', 'B' => 'b', 'C' => 'c', 'E' => 'e']

**Parameters:**
- `int|string $from`
- `int $to`

**Return:**
- `static

(Immutable)

`

--------

## moveElementToFirstPlace(int|string $key): static

Move an array element to the first place.

INFO: Instead of "Arrayy->moveElement()" this method will NOT
loss the keys of an indexed array.

**Parameters:**
- `int|string $key`

**Return:**
- `static

(Immutable)

`

--------

## moveElementToLastPlace(int|string $key): static

Move an array element to the last place.

INFO: Instead of "Arrayy->moveElement()" this method will NOT
loss the keys of an indexed array.

**Parameters:**
- `int|string $key`

**Return:**
- `static

(Immutable)

`

--------

## natcasesort(): $this

Sort an array using a case insensitive "natural order" algorithm.

**Parameters:**
__nothing__

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## natcasesortImmutable(): $this

Sort an array using a case insensitive "natural order" algorithm.

**Parameters:**
__nothing__

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## natsort(): $this

Sort entries using a "natural order" algorithm.

**Parameters:**
__nothing__

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## natsortImmutable(): $this

Sort entries using a "natural order" algorithm.

**Parameters:**
__nothing__

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## next(): false|mixed

Moves the internal iterator position to the next element and returns this element.

**Parameters:**
__nothing__

**Return:**
- `false|mixed

(Mutable) Will return false if there are no values.

`

--------

## nth(int $step, int $offset): static

Get the next nth keys and values from the array.

**Parameters:**
- `int $step`
- `int $offset`

**Return:**
- `static

(Immutable)

`

--------

## offsetExists(bool|int|string $offset): bool

Whether or not an offset exists.

**Parameters:**
- `bool|int|string $offset`

**Return:**
- `bool`

--------

## offsetGet(int|string $offset): mixed

Returns the value at specified offset.

**Parameters:**
- `TKey $offset`

**Return:**
- `mixed

Will return null if the offset did not exists.

`

--------

## offsetSet(int|string|null $offset, mixed $value): void

Assigns a value to the specified offset + check the type.

**Parameters:**
- `int|string|null $offset`
- `mixed $value`

**Return:**
- `void`

--------

## offsetUnset(int|string $offset): void

Unset an offset.

**Parameters:**
- `int|string $offset`

**Return:**
- `void

(Mutable) Return nothing.

`

--------

## only(int[]|string[] $keys): static

Get a subset of the items from the given array.

**Parameters:**
- `array-key[] $keys`

**Return:**
- `static

(Immutable)

`

--------

## pad(int $size, mixed $value): static

Pad array to the specified size with a given value.

**Parameters:**
- `int $size

Size of the result array.

`
- `mixed $value

Empty value by default.

`

**Return:**
- `static

(Immutable) Arrayy object padded to $size with $value.

`

--------

## partition(\Closure $closure): array

Partitions this array in two array according to a predicate.

Keys are preserved in the resulting array.

**Parameters:**
- `\Closure(T , TKey ): bool $closure

The predicate on which to partition.

`

**Return:**
- `array

An array with two elements. The first element contains the array
of elements where the predicate returned TRUE, the second element
contains the array of elements where the predicate returned FALSE.

`

--------

## pop(): mixed|null

Pop a specified value off the end of the current array.

**Parameters:**
__nothing__

**Return:**
- `mixed|null

(Mutable) The popped element from the current array or null if the array is e.g. empty.

`

--------

## prepend(mixed $value, mixed $key): $this

Prepend a (key) + value to the current array.

EXAMPLE:
a(['fòô' => 'bàř'])->prepend('foo'); // Arrayy[0 => 'foo', 'fòô' => 'bàř']

**Parameters:**
- `T $value`
- `TKey|null $key`

**Return:**
- `$this

(Mutable) Return this Arrayy object, with the prepended value.

`

--------

## prependImmutable(mixed $value, mixed $key): $this

Prepend a (key) + value to the current array.

EXAMPLE:
a(['fòô' => 'bàř'])->prependImmutable('foo')->getArray(); // [0 => 'foo', 'fòô' => 'bàř']

**Parameters:**
- `T $value`
- `TKey $key`

**Return:**
- `$this

(Immutable) Return this Arrayy object, with the prepended value.

`

--------

## prependToEachKey(float|int|string $suffix): static

Add a suffix to each key.

**Parameters:**
- `float|int|string $suffix`

**Return:**
- `static

(Immutable) Return an Arrayy object, with the prepended keys.

`

--------

## prependToEachValue(float|int|string $suffix): static

Add a suffix to each value.

**Parameters:**
- `float|int|string $suffix`

**Return:**
- `static

(Immutable) Return an Arrayy object, with the prepended values.

`

--------

## pull(int|int[]|string|string[]|null $keyOrKeys, mixed $fallback): mixed

Return the value of a given key and
delete the key.

**Parameters:**
- `int|int[]|string|string[]|null $keyOrKeys`
- `TFallback $fallback`

**Return:**
- `mixed`

--------

## push(mixed $args): $this

Push one or more values onto the end of array at once.

**Parameters:**
- `array ...$args`

**Return:**
- `$this

(Mutable) Return this Arrayy object, with pushed elements to the end of array.

`

--------

## randomImmutable(int|null $number): static

Get a random value from the current array.

EXAMPLE:
a([1, 2, 3, 4])->randomImmutable(2); // e.g.: Arrayy[1, 4]

**Parameters:**
- `int|null $number

How many values you will take?

`

**Return:**
- `static

(Immutable)

`

--------

## randomKey(): mixed|null

Pick a random key/index from the keys of this array.

EXAMPLE:
$arrayy = A::create([1 => 'one', 2 => 'two']);
$arrayy->randomKey(); // e.g. 2

**Parameters:**
__nothing__

**Return:**
- `mixed|null

Get a key/index or null if there wasn't a key/index.

`

--------

## randomKeys(int $number): static

Pick a given number of random keys/indexes out of this array.

EXAMPLE:
a([1 => 'one', 2 => 'two'])->randomKeys(); // e.g. Arrayy[1, 2]

**Parameters:**
- `int $number

The number of keys/indexes (should be <= \count($this->array))

`

**Return:**
- `static

(Immutable)

`

--------

## randomMutable(int|null $number): $this

Get a random value from the current array.

EXAMPLE:
a([1, 2, 3, 4])->randomMutable(2); // e.g.: Arrayy[1, 4]

**Parameters:**
- `int|null $number

How many values you will take?

`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## randomValue(): mixed

Pick a random value from the values of this array.

EXAMPLE:
a([1 => 'one', 2 => 'two'])->randomValue(); // e.g. 'one'

**Parameters:**
__nothing__

**Return:**
- `mixed

Get a random value or null if there wasn't a value.

`

--------

## randomValues(int $number): static

Pick a given number of random values out of this array.

EXAMPLE:
a([1 => 'one', 2 => 'two'])->randomValues(); // e.g. Arrayy['one', 'two']

**Parameters:**
- `int $number`

**Return:**
- `static

(Mutable)

`

--------

## randomWeighted(array $array, int $number):

**Parameters:**
- `array $array`
- `int $number`

**Return:**
- `self`

--------

## reduce(callable $callable, mixed $initial): static

Reduce the current array via callable e.g. anonymous-function and return the end result.

EXAMPLE:
a([1, 2, 3, 4])->reduce(
function ($carry, $item) {
return $carry * $item;
},
1
); // Arrayy[24]

**Parameters:**
- `callable $callable`
- `T2 $initial`

**Return:**
- `static

(Immutable)

`

--------

## reduce_dimension(bool $unique): static

**Parameters:**
- `bool $unique`

**Return:**
- `static

(Immutable)

`

--------

## reindex(): $this

Create a numerically re-indexed Arrayy object.

EXAMPLE:
a([2 => 1, 3 => 2])->reindex(); // Arrayy[0 => 1, 1 => 2]

**Parameters:**
__nothing__

**Return:**
- `$this

(Mutable) Return this Arrayy object, with re-indexed array-elements.

`

--------

## reject(\Closure $closure): static

Return all items that fail the truth test.

EXAMPLE:
$closure = function ($value) {
return $value % 2 !== 0;
}
a([1, 2, 3, 4])->reject($closure); // Arrayy[1 => 2, 3 => 4]

**Parameters:**
- `\Closure(T , TKey ): bool $closure`

**Return:**
- `static

(Immutable)

`

--------

## remove(mixed $key): static

Remove a value from the current array (optional using dot-notation).

EXAMPLE:
a([1 => 'bar', 'foo' => 'foo'])->remove(1); // Arrayy['foo' => 'foo']

**Parameters:**
- `TKey|TKey[] $key`

**Return:**
- `static

(Mutable)

`

--------

## removeElement(mixed $element): static

alias: for "Arrayy->removeValue()"

**Parameters:**
- `T $element`

**Return:**
- `static

(Immutable)

`

--------

## removeFirst(): static

Remove the first value from the current array.

EXAMPLE:
a([1 => 'bar', 'foo' => 'foo'])->removeFirst(); // Arrayy['foo' => 'foo']

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## removeLast(): static

Remove the last value from the current array.

EXAMPLE:
a([1 => 'bar', 'foo' => 'foo'])->removeLast(); // Arrayy[1 => 'bar']

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## removeValue(mixed $value): static

Removes a particular value from an array (numeric or associative).

EXAMPLE:
a([1 => 'bar', 'foo' => 'foo'])->removeValue('foo'); // Arrayy[1 => 'bar']

**Parameters:**
- `T $value`

**Return:**
- `static

(Immutable)

`

--------

## repeat(int $times): static

Generate array of repeated arrays.

**Parameters:**
- `int $times

How many times has to be repeated.

`

**Return:**
- `static

(Immutable)

`

--------

## replace(mixed $oldKey, mixed $newKey, mixed $newValue): static

Replace a key with a new key/value pair.

EXAMPLE:
$arrayy = a([1 => 'foo', 2 => 'foo2', 3 => 'bar']);
$arrayy->replace(2, 'notfoo', 'notbar'); // Arrayy[1 => 'foo', 'notfoo' => 'notbar', 3 => 'bar']

**Parameters:**
- `TKey $oldKey`
- `TKey $newKey`
- `T $newValue`

**Return:**
- `static

(Immutable)

`

--------

## replaceAllKeys(int[]|string[] $keys): static

Create an array using the current array as values and the other array as keys.

EXAMPLE:
$firstArray = [
1 => 'one',
2 => 'two',
3 => 'three',
];
$secondArray = [
'one' => 1,
1 => 'one',
2 => 2,
];
$arrayy = a($firstArray);
$arrayy->replaceAllKeys($secondArray); // Arrayy[1 => "one", 'one' => "two", 2 => "three"]

**Parameters:**
- `array $keys

An array of keys.

`

**Return:**
- `static

(Immutable) Arrayy object with keys from the other array, empty Arrayy object if the number of elements
for each array isn't equal or if the arrays are empty.

`

--------

## replaceAllValues(array $array): static

Create an array using the current array as keys and the other array as values.

EXAMPLE:
$firstArray = [
1 => 'one',
2 => 'two',
3 => 'three',
];
$secondArray = [
'one' => 1,
1 => 'one',
2 => 2,
];
$arrayy = a($firstArray);
$arrayy->replaceAllValues($secondArray); // Arrayy['one' => 1, 'two' => 'one', 'three' => 2]

**Parameters:**
- `array $array

An array of values.

`

**Return:**
- `static

(Immutable) Arrayy object with values from the other array, empty Arrayy object if the number of elements
for each array isn't equal or if the arrays are empty.

`

--------

## replaceKeys(array $keys): static

Replace the keys in an array with another set.

EXAMPLE:
a([1 => 'bar', 'foo' => 'foo'])->replaceKeys([1 => 2, 'foo' => 'replaced']); // Arrayy[2 => 'bar', 'replaced' => 'foo']

**Parameters:**
- `array $keys

An array of keys matching the array's size.

`

**Return:**
- `static

(Immutable)

`

--------

## replaceOneValue(mixed $search, mixed $replacement): static

Replace the first matched value in an array.

EXAMPLE:
$testArray = ['bar', 'foo' => 'foo', 'foobar' => 'foobar'];
a($testArray)->replaceOneValue('foo', 'replaced'); // Arrayy['bar', 'foo' => 'replaced', 'foobar' => 'foobar']

**Parameters:**
- `T $search

The value to replace.

`
- `T $replacement

The value to replace.

`

**Return:**
- `static

(Immutable)

`

--------

## replaceValues(string $search, string $replacement): static

Replace values in the current array.

EXAMPLE:
$testArray = ['bar', 'foo' => 'foo', 'foobar' => 'foobar'];
a($testArray)->replaceValues('foo', 'replaced'); // Arrayy['bar', 'foo' => 'replaced', 'foobar' => 'replacedbar']

**Parameters:**
- `string $search

The value to replace.

`
- `string $replacement

What to replace it with.

`

**Return:**
- `static

(Immutable)

`

--------

## rest(int $from): static

Get the last elements from index $from until the end of this array.

EXAMPLE:
a([2 => 'foo', 3 => 'bar', 4 => 'lall'])->rest(2); // Arrayy[0 => 'lall']

**Parameters:**
- `int $from`

**Return:**
- `static

(Immutable)

`

--------

## reverse(): $this

Return the array in the reverse order.

EXAMPLE:
a([1 => 1, 2 => 2, 3 => 3])->reverse(); // self[3, 2, 1]

**Parameters:**
__nothing__

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## reverseKeepIndex(): $this

Return the array with keys in the reverse order.

EXAMPLE:
a([1 => 1, 2 => 2, 3 => 3])->reverse(); // self[3 => 3, 2 => 2, 1 => 1]

**Parameters:**
__nothing__

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## rsort(int $sort_flags): $this

Sort an array in reverse order.

**Parameters:**
- `int $sort_flags [optional]


You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort.

`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## rsortImmutable(int $sort_flags): $this

Sort an array in reverse order.

**Parameters:**
- `int $sort_flags [optional]


You may modify the behavior of the sort using the optional
parameter sort_flags, for details
see sort.

`

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## searchIndex(mixed $value): false|int|string

Search for the first index of the current array via $value.

EXAMPLE:
a(['fòô' => 'bàř', 'lall' => 'bàř'])->searchIndex('bàř'); // Arrayy[0 => 'fòô']

**Parameters:**
- `T $value`

**Return:**
- `false|int|string

Will return FALSE if the value can't be found.

`

--------

## searchValue(mixed $index): static

Search for the value of the current array via $index.

EXAMPLE:
a(['fòô' => 'bàř'])->searchValue('fòô'); // Arrayy[0 => 'bàř']

**Parameters:**
- `TKey $index`

**Return:**
- `static

(Immutable) Will return a empty Arrayy if the value wasn't found.

`

--------

## serialize(): string

Serialize the current "Arrayy"-object.

EXAMPLE:
a([1, 4, 7])->serialize();

**Parameters:**
__nothing__

**Return:**
- `string`

--------

## set(string $key, mixed $value): $this

Set a value for the current array (optional using dot-notation).

EXAMPLE:
$arrayy = a(['Lars' => ['lastname' => 'Moelleken']]);
$arrayy->set('Lars.lastname', 'Müller'); // Arrayy['Lars', ['lastname' => 'Müller']]]

**Parameters:**
- `TKey $key

The key to set.

`
- `T $value

Its value.

`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## setAndGet(mixed $key, mixed $fallback): mixed

Get a value from a array and set it if it was not.

WARNING: this method only set the value, if the $key is not already set

EXAMPLE:
$arrayy = a([1 => 1, 2 => 2, 3 => 3]);
$arrayy->setAndGet(1, 4); // 1
$arrayy->setAndGet(0, 4); // 4

**Parameters:**
- `TKey $key

The key

`
- `T $fallback

The default value to set if it isn't.

`

**Return:**
- `mixed

(Mutable)

`

--------

## setFlags(int $flags):

**Parameters:**
- `int $flags`

**Return:**
- `TODO: __not_detected__`

--------

## setIteratorClass(string $iteratorClass): void

Sets the iterator classname for the current "Arrayy"-object.

**Parameters:**
- `class-string<\Arrayy\ArrayyIterator> $iteratorClass`

**Return:**
- `void`

--------

## shift(): mixed|null

Shifts a specified value off the beginning of array.

**Parameters:**
__nothing__

**Return:**
- `mixed|null

(Mutable) A shifted element from the current array.

`

--------

## shuffle(bool $secure, array|null $array): static

Shuffle the current array.

EXAMPLE:
a([1 => 'bar', 'foo' => 'foo'])->shuffle(); // e.g.: Arrayy[['foo' => 'foo', 1 => 'bar']]

**Parameters:**
- `bool $secure

using a CSPRNG | @see https://paragonie.com/b/JvICXzh_jhLyt4y3

`
- `array|null $array [optional]`

**Return:**
- `static

(Immutable)

`

--------

## size(int $mode): int

Count the values from the current array.

alias: for "Arrayy->count()"

**Parameters:**
- `int $mode`

**Return:**
- `int`

--------

## sizeIs(int $size): bool

Checks whether array has exactly $size items.

**Parameters:**
- `int $size`

**Return:**
- `bool`

--------

## sizeIsBetween(int $fromSize, int $toSize): bool

Checks whether array has between $fromSize to $toSize items. $toSize can be
smaller than $fromSize.

**Parameters:**
- `int $fromSize`
- `int $toSize`

**Return:**
- `bool`

--------

## sizeIsGreaterThan(int $size): bool

Checks whether array has more than $size items.

**Parameters:**
- `int $size`

**Return:**
- `bool`

--------

## sizeIsLessThan(int $size): bool

Checks whether array has less than $size items.

**Parameters:**
- `int $size`

**Return:**
- `bool`

--------

## sizeRecursive(): int

Counts all elements in an array, or something in an object.


For objects, if you have SPL installed, you can hook into count() by implementing interface {@see \Countable}.
The interface has exactly one method, {@see \Countable::count()}, which returns the return value for the count()
function. Please see the {@see \Array} section of the manual for a detailed explanation of how arrays are
implemented and used in PHP.

**Parameters:**
__nothing__

**Return:**
- `int


The number of elements in var, which is
typically an array, since anything else will have one
element.



If var is not an array or an object with
implemented Countable interface,
1 will be returned.
There is one exception, if var is &null;,
0 will be returned.



Caution: count may return 0 for a variable that isn't set,
but it may also return 0 for a variable that has been initialized with an
empty array. Use isset to test if a variable is set.

`

--------

## slice(int $offset, int|null $length, bool $preserveKeys): static

Extract a slice of the array.

**Parameters:**
- `int $offset

Slice begin index.

`
- `int|null $length

Length of the slice.

`
- `bool $preserveKeys

Whether array keys are preserved or no.

`

**Return:**
- `static

(Immutable) A slice of the original array with length $length.

`

--------

## sort(int|string $direction, int $strategy, bool $keepKeys): static

Sort the current array and optional you can keep the keys.

EXAMPLE:
a(3 => 'd', 2 => 'f', 0 => 'a')->sort(SORT_ASC, SORT_NATURAL, false); // Arrayy[0 => 'a', 1 => 'd', 2 => 'f']

**Parameters:**
- `int|string $direction

use SORT_ASC (default) or SORT_DESC

`
- `int $strategy

sort_flags => use e.g.: SORT_REGULAR (default) or
SORT_NATURAL

`
- `bool $keepKeys`

**Return:**
- `static

(Mutable) Return this Arrayy object.

`

--------

## sortImmutable(int|string $direction, int $strategy, bool $keepKeys): static

Sort the current array and optional you can keep the keys.

**Parameters:**
- `int|string $direction

use SORT_ASC (default) or SORT_DESC

`
- `int $strategy

sort_flags => use e.g.: SORT_REGULAR (default) or
SORT_NATURAL

`
- `bool $keepKeys`

**Return:**
- `static

(Immutable) Return this Arrayy object.

`

--------

## sortKeys(int|string $direction, int $strategy): $this

Sort the current array by key.

EXAMPLE:
a([1 => 2, 0 => 1])->sortKeys(\SORT_ASC); // Arrayy[0 => 1, 1 => 2]

**Parameters:**
- `int|string $direction

use SORT_ASC (default) or SORT_DESC

`
- `int $strategy

use e.g.: SORT_REGULAR (default) or
SORT_NATURAL

`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## sortKeysImmutable(int|string $direction, int $strategy): $this

Sort the current array by key.

**Parameters:**
- `int|string $direction

use SORT_ASC (default) or SORT_DESC

`
- `int $strategy

use e.g.: SORT_REGULAR (default) or
SORT_NATURAL

`

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## sortValueKeepIndex(int|string $direction, int $strategy): static

Sort the current array by value.

EXAMPLE:
a(3 => 'd', 2 => 'f', 0 => 'a')->sortValueKeepIndex(SORT_ASC, SORT_REGULAR); // Arrayy[0 => 'a', 3 => 'd', 2 => 'f']

**Parameters:**
- `int|string $direction

use SORT_ASC (default) or SORT_DESC

`
- `int $strategy

use e.g.: SORT_REGULAR (default) or
SORT_NATURAL

`

**Return:**
- `static

(Mutable)

`

--------

## sortValueNewIndex(int|string $direction, int $strategy): static

Sort the current array by value.

EXAMPLE:
a(3 => 'd', 2 => 'f', 0 => 'a')->sortValueNewIndex(SORT_ASC, SORT_NATURAL); // Arrayy[0 => 'a', 1 => 'd', 2 => 'f']

**Parameters:**
- `int|string $direction

use SORT_ASC (default) or SORT_DESC

`
- `int $strategy

use e.g.: SORT_REGULAR (default) or
SORT_NATURAL

`

**Return:**
- `static

(Mutable)

`

--------

## sorter(callable|mixed|null $sorter, int|string $direction, int $strategy): static

Sort a array by value or by a closure.

- If the sorter is null, the array is sorted naturally.
- Associative (string) keys will be maintained, but numeric keys will be re-indexed.

EXAMPLE:
$testArray = range(1, 5);
$under = a($testArray)->sorter(
function ($value) {
return $value % 2 === 0;
}
);
var_dump($under); // Arrayy[1, 3, 5, 2, 4]

**Parameters:**
- `callable|mixed|null $sorter`
- `int|string $direction

use SORT_ASC (default) or
SORT_DESC

`
- `int $strategy

use e.g.: SORT_REGULAR (default) or
SORT_NATURAL

`

**Return:**
- `static

(Immutable)

`

--------

## splice(int $offset, int|null $length, array $replacement): static

**Parameters:**
- `int $offset`
- `int|null $length`
- `array $replacement`

**Return:**
- `static

(Immutable)

`

--------

## split(int $numberOfPieces, bool $keepKeys): static

Split an array in the given amount of pieces.

EXAMPLE:
a(['a' => 1, 'b' => 2])->split(2, true); // Arrayy[['a' => 1], ['b' => 2]]

**Parameters:**
- `int $numberOfPieces`
- `bool $keepKeys`

**Return:**
- `static

(Immutable)

`

--------

## stripEmpty(): static

Strip all empty items from the current array.

EXAMPLE:
a(['a' => 1, 'b' => ''])->stripEmpty(); // Arrayy[['a' => 1]]

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## swap(int|string $swapA, int|string $swapB): static

Swap two values between positions by key.

EXAMPLE:
a(['a' => 1, 'b' => ''])->swap('a', 'b'); // Arrayy[['a' => '', 'b' => 1]]

**Parameters:**
- `int|string $swapA

a key in the array

`
- `int|string $swapB

a key in the array

`

**Return:**
- `static

(Immutable)

`

--------

## toArray(bool $convertAllArrayyElements, bool $preserveKeys): array

Get the current array from the "Arrayy"-object.

alias for "getArray()"

**Parameters:**
- `bool $convertAllArrayyElements


Convert all Child-"Arrayy" objects also to arrays.

`
- `bool $preserveKeys


e.g.: A generator maybe return the same key more than once,
so maybe you will ignore the keys.

`

**Return:**
- `array`

--------

## toJson(int $options, int $depth): string

Convert the current array to JSON.

EXAMPLE:
a(['bar', ['foo']])->toJson(); // '["bar",{"1":"foo"}]'

**Parameters:**
- `int $options [optional]

e.g. JSON_PRETTY_PRINT

`
- `int $depth [optional]

Set the maximum depth. Must be greater than zero.

`

**Return:**
- `string`

--------

## toList(bool $convertAllArrayyElements): array

Get the current array from the "Arrayy"-object as list.

**Parameters:**
- `bool $convertAllArrayyElements


Convert all Child-"Arrayy" objects also to arrays.

`

**Return:**
- `array`

--------

## toPermutation(string[]|null $items, string[] $helper): static|static[]

**Parameters:**
- `string[]|null $items [optional]`
- `string[] $helper [optional]`

**Return:**
- `static|static[]`

--------

## toString(string $separator): string

Implodes array to a string with specified separator.

**Parameters:**
- `string $separator [optional]

The element's separator.

`

**Return:**
- `string

The string representation of array, separated by ",".

`

--------

## uasort(callable $callable): $this

Sort the entries with a user-defined comparison function and maintain key association.

**Parameters:**
- `callable $callable`

**Return:**
- `$this

(Mutable) Return this Arrayy object.

`

--------

## uasortImmutable(callable $callable): $this

Sort the entries with a user-defined comparison function and maintain key association.

**Parameters:**
- `callable $callable`

**Return:**
- `$this

(Immutable) Return this Arrayy object.

`

--------

## uksort(callable $callable): static

Sort the entries by keys using a user-defined comparison function.

**Parameters:**
- `callable $callable`

**Return:**
- `static

(Mutable) Return this Arrayy object.

`

--------

## uksortImmutable(callable $callable): static

Sort the entries by keys using a user-defined comparison function.

**Parameters:**
- `callable $callable`

**Return:**
- `static

(Immutable) Return this Arrayy object.

`

--------

## unique(): static

alias: for "Arrayy->uniqueNewIndex()"

**Parameters:**
__nothing__

**Return:**
- `static

(Mutable) Return this Arrayy object, with the appended values.

`

--------

## uniqueKeepIndex(): $this

Return a duplicate free copy of the current array. (with the old keys)

EXAMPLE:
a([2 => 1, 3 => 2, 4 => 2])->uniqueNewIndex(); // Arrayy[2 => 1, 3 => 2]

**Parameters:**
__nothing__

**Return:**
- `$this

(Mutable)

`

--------

## uniqueNewIndex(): $this

Return a duplicate free copy of the current array.

EXAMPLE:
a([2 => 1, 3 => 2, 4 => 2])->uniqueNewIndex(); // Arrayy[1, 2]

**Parameters:**
__nothing__

**Return:**
- `$this

(Mutable)

`

--------

## unserialize(string $string): $this

Unserialize an string and return the instance of the "Arrayy"-class.

EXAMPLE:
$serialized = a([1, 4, 7])->serialize();
a()->unserialize($serialized);

**Parameters:**
- `string $string`

**Return:**
- `$this`

--------

## unshift(mixed $args): $this

Prepends one or more values to the beginning of array at once.

**Parameters:**
- `array ...$args`

**Return:**
- `$this

(Mutable) Return this Arrayy object, with prepended elements to the beginning of array.

`

--------

## validate(\Closure $closure): bool

Tests whether the given closure return something valid for all elements of this array.

**Parameters:**
- `\Closure(T , TKey ): bool $closure the predicate`

**Return:**
- `bool

TRUE, if the predicate yields TRUE for all elements, FALSE otherwise.

`

--------

## values(): static

Get all values from a array.

EXAMPLE:
$arrayy = a([1 => 'foo', 2 => 'foo2', 3 => 'bar']);
$arrayyTmp->values(); // Arrayy[0 => 'foo', 1 => 'foo2', 2 => 'bar']

**Parameters:**
__nothing__

**Return:**
- `static

(Immutable)

`

--------

## walk(callable $callable, bool $recursive, mixed $userData): $this

Apply the given function to every element in the array, discarding the results.

EXAMPLE:
$callable = function (&$value, $key) {
$value = $key;
};
$arrayy = a([1, 2, 3]);
$arrayy->walk($callable); // Arrayy[0, 1, 2]

**Parameters:**
- `callable $callable`
- `bool $recursive [optional]

Whether array will be walked recursively or no

`
- `mixed $userData [optional]


If the optional $userData parameter is supplied,
it will be passed as the third parameter to the $callable.

`

**Return:**
- `$this

(Mutable) Return this Arrayy object, with modified elements.

`

--------

## where(string $keyOrPropertyOrMethod, mixed $value): static

Returns a collection of matching items.

**Parameters:**
- `string $keyOrPropertyOrMethod

The property or method to evaluate.

`
- `mixed $value

The value to match.

`

**Return:**
- `static`

--------

---

append
asort
count
exchangeArray
getArrayCopy
getFlags
getIterator
getIteratorClass
ksort
natcasesort
natsort
offsetExists
offsetGet
offsetSet
offsetUnset
serialize
setFlags
setIteratorClass
uasort
uksort
unserialize

## append(null|mixed $value):

**Parameters:**
- `null|mixed $value`

**Return:**
- `TODO: __not_detected__`

--------

## asort(int $flags):

**Parameters:**
- `int $flags`

**Return:**
- `TODO: __not_detected__`

--------

## count():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## exchangeArray(array|object $array):

**Parameters:**
- `array|object $array`

**Return:**
- `TODO: __not_detected__`

--------

## getArrayCopy():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## getFlags():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## getIterator():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## getIteratorClass():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## ksort(int $flags):

**Parameters:**
- `int $flags`

**Return:**
- `TODO: __not_detected__`

--------

## natcasesort():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## natsort():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## offsetExists(null|mixed $key):

**Parameters:**
- `null|mixed $key`

**Return:**
- `TODO: __not_detected__`

--------

## offsetGet(null|mixed $key):

**Parameters:**
- `null|mixed $key`

**Return:**
- `TODO: __not_detected__`

--------

## offsetSet(null|mixed $key, null|mixed $value):

**Parameters:**
- `null|mixed $key`
- `null|mixed $value`

**Return:**
- `TODO: __not_detected__`

--------

## offsetUnset(null|mixed $key):

**Parameters:**
- `null|mixed $key`

**Return:**
- `TODO: __not_detected__`

--------

## serialize():

**Parameters:**
__nothing__

**Return:**
- `TODO: __not_detected__`

--------

## setFlags(int $flags):

**Parameters:**
- `int $flags`

**Return:**
- `TODO: __not_detected__`

--------

## setIteratorClass(string $iteratorClass):

**Parameters:**
- `string $iteratorClass`

**Return:**
- `TODO: __not_detected__`

--------

## uasort(callable $callback):

**Parameters:**
- `callable $callback`

**Return:**
- `TODO: __not_detected__`

--------

## uksort(callable $callback):

**Parameters:**
- `callable $callback`

**Return:**
- `TODO: __not_detected__`

--------

## unserialize(string $data):

**Parameters:**
- `string $data`

**Return:**
- `TODO: __not_detected__`

--------

## Support

For support and donations please visit [Github](https://github.com/voku/Arrayy/) | [Issues](https://github.com/voku/Arrayy/issues) | [PayPal](https://paypal.me/moelleken) | [Patreon](https://www.patreon.com/voku).

For status updates and release announcements please visit [Releases](https://github.com/voku/Arrayy/releases) | [Twitter](https://twitter.com/suckup_de) | [Patreon](https://www.patreon.com/voku/posts).

For professional support please contact [me](https://about.me/voku).

## Thanks

- Thanks to [GitHub](https://github.com) (Microsoft) for hosting the code and a good infrastructure including Issues-Managment, etc.
- Thanks to [IntelliJ](https://www.jetbrains.com) as they make the best IDEs for PHP and they gave me an open source license for PhpStorm!
- Thanks to [Travis CI](https://travis-ci.com/) for being the most awesome, easiest continous integration tool out there!
- Thanks to [StyleCI](https://styleci.io/) for the simple but powerfull code style check.
- Thanks to [PHPStan](https://github.com/phpstan/phpstan) && [Psalm](https://github.com/vimeo/psalm) for relly great Static analysis tools and for discover bugs in the code!

## Tests

From the project directory, tests can be ran using `phpunit`

## License

Released under the MIT License - see `LICENSE.txt` for details.