https://github.com/imranhsayed/autoloaders-with-composer
⌛ Demo for autoloading with Composer
https://github.com/imranhsayed/autoloaders-with-composer
Last synced: about 2 months ago
JSON representation
⌛ Demo for autoloading with Composer
- Host: GitHub
- URL: https://github.com/imranhsayed/autoloaders-with-composer
- Owner: imranhsayed
- Created: 2019-11-21T09:04:04.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2019-11-21T10:47:24.000Z (over 5 years ago)
- Last Synced: 2024-12-28T09:04:07.800Z (5 months ago)
- Language: PHP
- Size: 13.7 KB
- Stars: 6
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
## Autoloading with Composer
✅ Demo for autoloading with composer.
[Useful blog on this](https://medium.com/tech-tajawal/php-composer-the-autoloader-d676a2f103aa)
## Steps taken
✅ 1. Create two classes `A.php` and `B.php` in classes directory.
✅ 2. Create a `composer.json` file in the root of your project and add the below code for autoloading.
```ruby
{
"autoload": {
"classmap": [
"classes/"
]
}
}
```
> Using `classmap`, above we are telling composer that this is the way to do mapping, and it is a very basic way to map namespaces to paths.
✅ 3. Now when we run the command `composer install` in the root of our project, it will replace our spl_autoload_register function in the `autoload.php` with its own code and also
create the below files automatically in the composer directory.
```ruby
└── vendor
├── autoload.php
└── composer
├── ClassLoader.php
├── LICENSE
├── autoload_classmap.php
├── autoload_namespaces.php
├── autoload_psr4.php
├── autoload_real.php
├── autoload_static.php
└── installed.json
```
✅ 4. Require this `autoload.php` file in `index.php` and instantiate the `class A`.
```ruby
require __DIR__ . '/vendor/autoload.php';
/**
* Load A class
* By using spl autoload register,
* PHP is telling you “I will give you the chance to go and load your class even if you didn’t load it before your statement $a = new A();
* after that, I will throw an error if it didn’t work”.
*/
$a = new A();
```
✅ 5.It will now load all of this files automatically and the class that is instantiated . So if we run in index.php, we get
```ruby
// check the list of all loaded files
echo '
';
print_r( get_included_files() );
```
```ruby
Array
(
[0] => /Applications/MAMP/htdocs/autoloaders-with-composer/index.php
[1] => /Applications/MAMP/htdocs/autoloaders-with-composer/vendor/autoload.php
[2] => /Applications/MAMP/htdocs/autoloaders-with-composer/vendor/composer/autoload_real.php
[3] => /Applications/MAMP/htdocs/autoloaders-with-composer/vendor/composer/ClassLoader.php
[4] => /Applications/MAMP/htdocs/autoloaders-with-composer/vendor/composer/autoload_static.php
[5] => /Applications/MAMP/htdocs/autoloaders-with-composer/classes/A.php
)
```