https://github.com/teodoroleckie/design-patterns

Simple php design pattern. Memento, State, Strategy, Chain of Responsibility & Decorator
https://github.com/teodoroleckie/design-patterns

chain-of-responsibility-pattern decorator-pattern memento-pattern state-pattern strategy-pattern

Last synced: 4 months ago
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Simple php design pattern. Memento, State, Strategy, Chain of Responsibility & Decorator

• Host: GitHub
• URL: https://github.com/teodoroleckie/design-patterns
• Owner: teodoroleckie
• License: mit
• Created: 2021-04-10T10:26:52.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2021-05-11T07:19:59.000Z (about 4 years ago)
• Last Synced: 2025-01-03T15:45:41.520Z (6 months ago)
• Topics: chain-of-responsibility-pattern, decorator-pattern, memento-pattern, state-pattern, strategy-pattern
• Language: PHP
• Homepage:
• Size: 61.5 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        
## Design Patterns in PHP

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### Memento:

```php

state()->name(); // 'Name 1'

$originator->changeState(new State('Name 1', 'value 1'));

$historic->save();

$originator->changeState(new State('Name 2', 'value 2'));

$originator->state()->name(); // 'Name 2'

$historic->undo();

$originator->state()->name(); // 'Name 1'

$historic->undo();

$originator->state()->name(); // 'Name 1'

```

### State:

```php

isOn(); // false

try{

    $car->turnOff(); // trow Exception

}catch(Exception $exception){

}

$car->turnOn(); // OnState

$car->isOn(); // true

$car->speedUp(); //SpeedUpState

```

### Strategy:

```php

execute($terms); // 18

$context->changeStrategy(new DivisionStrategy)->execute($terms); // 2

$context->changeStrategy(new SumStrategy)->execute($terms); // 9

```

### Chain of Responsibility:

```php

next(new SumOperation())

    ->next(new SubtractionOperation());

$divisionOperationHandler->handle(new Operation('SUBTRACTION', 10,2)); // 8

$divisionOperationHandler->handle(new Operation('DIVISION', 10,2)); // 5

$divisionOperationHandler->handle(new Operation('SUM', 10,2)); // 12

$divisionOperationHandler->handle(new Operation('INVALID', 10,2)); // null

```

### Decorator:

```php

normalize($text); // same-random-text!

```