PHP 框架中的漂亮 URL

这通常是通过将所有请求路由到单个入口点（根据请求执行不同代码的文件）来完成的，规则如下：

# Redirect everything that doesn't match a directory or file to index.php
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule .* index.php [L]

然后，此文件将请求 （） 与路由列表进行比较 - 与请求匹配的模式映射到控制器操作（在 MVC 应用程序中）或其他执行路径。框架通常包括一个路由，该路由可以从请求本身推断控制器和操作，作为备份路由。$_SERVER["REQUEST_URI"]

一个小的简化示例：

<?php

// Define a couple of simple actions
class Home {
    public function GET() { return 'Homepage'; }
}

class About {
    public function GET() { return 'About page'; }
}

// Mapping of request pattern (URL) to action classes (above)
$routes = array(
    '/' => 'Home',
    '/about' => 'About'
);

// Match the request to a route (find the first matching URL in routes)
$request = '/' . trim($_SERVER['REQUEST_URI'], '/');
$route = null;
foreach ($routes as $pattern => $class) {
    if ($pattern == $request) {
        $route = $class;
        break;
    }
}

// If no route matched, or class for route not found (404)
if (is_null($route) || !class_exists($route)) {
    header('HTTP/1.1 404 Not Found');
    echo 'Page not found';
    exit(1);
}

// If method not found in action class, send a 405 (e.g. Home::POST())
if (!method_exists($route, $_SERVER["REQUEST_METHOD"])) {
    header('HTTP/1.1 405 Method not allowed');
    echo 'Method not allowed';
    exit(1);
}

// Otherwise, return the result of the action
$action = new $route;
$result = call_user_func(array($action, $_SERVER["REQUEST_METHOD"]));
echo $result;

结合第一个配置，这是一个简单的脚本，允许您使用诸如 之类的URL。希望这有助于您理解这里发生的事情。domain.com/about