因为公司的项目用到是slim 框架，所以想把它学习一下。在公司用到是Slim2版本，现在官网已经到达 Slim3的版本了。官网地址：http://www.cnblogs.com/lmenglliren89php/。
首先按照官网的教程，安装Slim：
1.curl -sS https://getcomposer.org/installer | sudo php -- --install-dir=/usr/local/bin --filename=composer
2.composer require slim/slim "^3.0"
这样一个Slim就安装好了。还有Apache的DirectDocumentroot设置：AllowOverride All。
同时它自带的Example的例子也是可以运行的，需要调整下文件夹的位置就好。
如何才能理解一个框架呢？是很顺利的使用吗？还是从一步步去跟进去它的流程？
我的思路是这样的，我把这个Example改成自己的项目，然后在不知道如何去的时候去深挖一下，不知道这样的逻辑是否正确，暂且就这样做吧。
项目逻辑要求是这样的，页面提交数据--->>接收数据--->>存入数据库--->>记入日志--->>返回写入成功
接收数据的route:
$app->get(‘/replace/‘, function ($request, $response, $args) {
Example\Module\Replace::instance()->setBody($request, $response);
});
public function __construct($container = []) { if (is_array($container)) { $container = new Container($container); } if (!$container instanceof ContainerInterface) { throw new InvalidArgumentException(‘Expected a ContainerInterface‘); } $this->container = $container; }
来看Container怎么做的：
public function __construct(array $values = [])
{
parent::__construct($values);
$userSettings = isset($values[‘settings‘]) ? $values[‘settings‘] : [];
$this->registerDefaultServices($userSettings);
}
private function registerDefaultServices($userSettings)
{
$defaultSettings = $this->defaultSettings;
/**
* This service MUST return an array or an
* instance of \ArrayAccess.
*
* @return array|\ArrayAccess
*/
$this[‘settings‘] = function () use ($userSettings, $defaultSettings) {
return new Collection(array_merge($defaultSettings, $userSettings));
};
if (!isset($this[‘environment‘])) {
/**
* This service MUST return a shared instance
* of \Slim\Interfaces\Http\EnvironmentInterface.
*
* @return EnvironmentInterface
*/
$this[‘environment‘] = function () {
return new Environment($_SERVER);
};
}
if (!isset($this[‘request‘])) {
/**
* PSR-7 Request object
*
* @param Container $c
*
* @return ServerRequestInterface
*/
$this[‘request‘] = function ($c) {
return Request::createFromEnvironment($c->get(‘environment‘));
};
}
if (!isset($this[‘response‘])) {
/**
* PSR-7 Response object
*
* @param Container $c
*
* @return ResponseInterface
*/
$this[‘response‘] = function ($c) {
$headers = new Headers([‘Content-Type‘ => ‘text/html; charset=UTF-8‘]);
$response = new Response(200, $headers);
return $response->withProtocolVersion($c->get(‘settings‘)[‘httpVersion‘]);
};
}
if (!isset($this[‘router‘])) {
/**
* This service MUST return a SHARED instance
* of \Slim\Interfaces\RouterInterface.
*
* @return RouterInterface
*/
$this[‘router‘] = function () {
return new Router;
};
}
if (!isset($this[‘foundHandler‘])) {
/**
* This service MUST return a SHARED instance
* of \Slim\Interfaces\InvocationStrategyInterface.
*
* @return InvocationStrategyInterface
*/
$this[‘foundHandler‘] = function () {
return new RequestResponse;
};
}
if (!isset($this[‘errorHandler‘])) {
/**
* This service MUST return a callable
* that accepts three arguments:
*
* 1. Instance of \Psr\Http\Message\ServerRequestInterface
* 2. Instance of \Psr\Http\Message\ResponseInterface
* 3. Instance of \Exception
*
* The callable MUST return an instance of
* \Psr\Http\Message\ResponseInterface.
*
* @param Container $c
*
* @return callable
*/
$this[‘errorHandler‘] = function ($c) {
return new Error($c->get(‘settings‘)[‘displayErrorDetails‘]);
};
}
if (!isset($this[‘notFoundHandler‘])) {
/**
* This service MUST return a callable
* that accepts two arguments:
*
* 1. Instance of \Psr\Http\Message\ServerRequestInterface
* 2. Instance of \Psr\Http\Message\ResponseInterface
*
* The callable MUST return an instance of
* \Psr\Http\Message\ResponseInterface.
*
* @return callable
*/
$this[‘notFoundHandler‘] = function () {
return new NotFound;
};
}
if (!isset($this[‘notAllowedHandler‘])) {
/**
* This service MUST return a callable
* that accepts three arguments:
*
* 1. Instance of \Psr\Http\Message\ServerRequestInterface
* 2. Instance of \Psr\Http\Message\ResponseInterface
* 3. Array of allowed HTTP methods
*
* The callable MUST return an instance of
* \Psr\Http\Message\ResponseInterface.
*
* @return callable
*/
$this[‘notAllowedHandler‘] = function () {
return new NotAllowed;
};
}
if (!isset($this[‘callableResolver‘])) {
/**
* Instance of \Slim\Interfaces\CallableResolverInterface
*
* @param Container $c
*
* @return CallableResolverInterface
*/
$this[‘callableResolver‘] = function ($c) {
return new CallableResolver($c);
};
}
}
会看到这段代码就是初始化container中的router key，以后的route都加到这个里面就好了。
$this[‘router‘] = function () {
return new Router;
};
只是能不加入自己的Key呢？
学习Slim Framework for PHP v3 (一)
原文：http://www.cnblogs.com/lmenglliren89php/p/5149741.html