Pimple运行流程浅析（PHP容器）

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<?php
$closure = function ($name) {
    return 'Hello ' . $name;
};
echo $closure('nesfo');//Hello nesfo
var_dump(method_exists($closure, '__invoke'));//true

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<?php
$numbersPlusOne = array_map(function ($number) {
    return $number + 1;
}, [1, 2, 3]);
print_r($numbersPlusOne);

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[2, 3, 4]

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<?php
function incrementNum ($number) {
    return $number + 1;
}
$numbersPlusOne = array_map('incrementNum', [1, 2, 3]);
print_r($numbersPlusOne);

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interface ArrayAccess {
    //检查一个偏移位置是否存在 
    public mixed offsetExists ( mixed $offset  );
    
    //获取一个偏移位置的值 
    public mixed offsetGet( mixed $offset  );
    
    //设置一个偏移位置的值 
    public mixed offsetSet ( mixed $offset  );
    
    //复位一个偏移位置的值 
    public mixed offsetUnset  ( mixed $offset  );
}

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namespace EasyWeChatFoundation;
use PimpleContainer;
class Application extends Container
{
    /**
     * Service Providers.
     *
     * @var array
     */
    protected $providers = [
        ServiceProvidersServerServiceProvider::class,
        ServiceProvidersUserServiceProvider::class
    ];
    /**
     * Application constructor.
     *
     * @param array $config
     */
    public function __construct($config)
    {
        parent::__construct();
        $this['config'] = function () use ($config) {
            return new Config($config);
        };
        if ($this['config']['debug']) {
            error_reporting(E_ALL);
        }
        $this->registerProviders();
    }
    /**
     * Add a provider.
     *
     * @param string $provider
     *
     * @return Application
     */
    public function addProvider($provider)
    {
        array_push($this->providers, $provider);
        return $this;
    }
    /**
     * Set providers.
     *
     * @param array $providers
     */
    public function setProviders(array $providers)
    {
        $this->providers = [];
        foreach ($providers as $provider) {
            $this->addProvider($provider);
        }
    }
    /**
     * Return all providers.
     *
     * @return array
     */
    public function getProviders()
    {
        return $this->providers;
    }
    /**
     * Magic get access.
     *
     * @param string $id
     *
     * @return mixed
     */
    public function __get($id)
    {
        return $this->offsetGet($id);
    }
    /**
     * Magic set access.
     *
     * @param string $id
     * @param mixed  $value
     */
    public function __set($id, $value)
    {
        $this->offsetSet($id, $value);
    }
}

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$app = new Application([]);
$user = $app->user;

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public function offsetSet($id, $value){}
public function offsetGet($id){}

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namespace Pimple;
/**
 * Pimple service provider interface.
 *
 * @author  Fabien Potencier
 * @author  Dominik Zogg
 */
interface ServiceProviderInterface
{
    /**
     * Registers services on the given container.
     *
     * This method should only be used to configure services and parameters.
     * It should not get services.
     *
     * @param Container $pimple A container instance
     */
    public function register(Container $pimple);
}

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protected $providers = [
    ServiceProvidersServerServiceProvider::class,
    ServiceProvidersUserServiceProvider::class
];

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namespace EasyWeChatFoundationServiceProviders;
use EasyWeChatUserUser;
use PimpleContainer;
use PimpleServiceProviderInterface;
/**
 * Class UserServiceProvider.
 */
class UserServiceProvider implements ServiceProviderInterface
{
    /**
     * Registers services on the given container.
     *
     * This method should only be used to configure services and parameters.
     * It should not get services.
     *
     * @param Container $pimple A container instance
     */
    public function register(Container $pimple)
    {
        $pimple['user'] = function ($pimple) {
            return new User($pimple['access_token']);
        };
    }
}

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private function registerProviders()
{
    foreach ($this->providers as $provider) {
        $this->register(new $provider());
    }
}

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public function register(ServiceProviderInterface $provider, array $values = array())
{
    $provider->register($this);
    foreach ($values as $key => $value) {
        $this[$key] = $value;
    }
    return $this;
}

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$this->values[$id] = $value;
$this->keys[$id] = true;

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$user = $app->user;

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$raw = $this->values[$id];
$val = $this->values[$id] = $raw($this);
$this->raw[$id] = $raw;
$this->frozen[$id] = true;
return $val;

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$pimple['user'] = function ($pimple) {
    return new User($pimple['access_token']);
};