modern php closure 闭包

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

$ php numbersPlusOne.php

<?phpfunction enclosePerson($name) { ???// use 可以把多个参数传入闭包 ???return function($doCommand) use ($name) { ???????return sprintf(‘%s, %s‘.PHP_EOL, $name, $doCommand); ???};}$clay = enclosePerson(‘Clay‘);echo $clay(‘get me some sweet tea!‘);

<?phpclass App { ???protected $routes = []; ???protected $responseStatus = ‘200 OK‘; ???protected $responseContentType = ‘text/html‘; ???protected $responseBody = ‘Hello world‘; ???public function addRoute($routePath, $routeCallBack) { ???????$this->routes[$routePath] = $routeCallBack->bindTo($this, __CLASS__); ???} ???public function dispatch($currrentPath) { ???????foreach ($this->routes as $routePath => $callback) { ???????????if ($routePath === $currrentPath) { ???????????????$callback(); ???????????} ???????} ???????header(‘HTTP/1.1 ‘, $this->responseStatus); ???????header(‘Content-Type: ‘, $this->responseContentType); ???????header(‘Content-length: ‘, mb_strlen($this->responseBody)); ???????echo $this->responseBody; ???}}$app = new App();$app->addRoute(‘/users/josh‘, function() { ???$this->responseContentType = ‘application/json; charset=utf8‘; ???$this->responseBody = ‘{"name": "Josh"}‘;});$app->dispatch(‘/users/josh‘);echo PHP_EOL;// {"name": "Josh"}