[PHP] 实现路由映射到指定控制器

自定义路由的功能，指定到pathinfo的url上,再次升级之前的脚本

SimpleLoader.php

<?php
class SimpleLoader{
    public static function run($rules=array()){
        header("content-type:text/html;charset=utf-8");
        self::register();
        self::commandLine();
        self::router($rules);
        self::pathInfo();
    }
    //自动加载
    public static function loadClass($class){
        $class=str_replace(\'\\\', \'/\', $class);
        $dir=str_replace(\'\\\', \'/\', __DIR__);
        $class=$dir."/".$class.".php";
        if(!file_exists($class)){
            header("HTTP/1.1 404 Not Found");
        }
        require_once $class;        
    }
    //命令行模式
    public static function commandLine(){
        if(php_sapi_name()=="cli"){
            $_SERVER[\'PATH_INFO\']="";
            foreach ($_SERVER[\'argv\'] as $k=>$v) {
                if($k==0) continue;
                $_SERVER[\'PATH_INFO\'].="/".$v;
            }
        }
    }
    //路由模式
    public static function router($rules){
        if(isset($_SERVER[\'PATH_INFO\']) && !empty($rules)){
            $pathInfo=ltrim($_SERVER[\'PATH_INFO\'],"/");
            foreach ($rules as $k=>$v) {
                $reg="/".$k."/i";
                if(preg_match($reg,$pathInfo)){
                    $res=preg_replace($reg,$v,$pathInfo);
                    $_SERVER[\'PATH_INFO\']=\'/\'.$res;
                }
            }
        }
    }
    //pathinfo处理
    public static function pathInfo(){
        if(isset($_SERVER[\'PATH_INFO\'])){
            $pathinfo=array_filter(explode("/", $_SERVER[\'PATH_INFO\']));
            for($i=1;$i<=count($pathinfo);$i++){
                $key=isset($pathinfo[$i]) ? $pathinfo[$i] : \'\';
                $value=isset($pathinfo[$i+1]) ? $pathinfo[$i+1] :"";
                switch ($i) {
                    case 1:
                        $_GET[\'m\']=ucfirst($key);
                        break;
                    case 2:
                        $_GET[\'c\']=ucfirst($key);
                        break;
                    case 3:
                        $_GET[\'a\']=$key;
                        break;
                    default:
                        if($i>3){
                            if($i%2==0){
                                $_GET[$key]=$value;
                            }
                        }
                        break;
                }
            }
        }
        $_GET[\'m\']=!empty($_GET[\'m\']) ? ucfirst($_GET[\'m\']) : \'Index\';
        $_GET[\'c\']=!empty($_GET[\'c\']) ? ucfirst($_GET[\'c\']) : \'Index\';
        $_GET[\'a\']=!empty($_GET[\'a\']) ? $_GET[\'a\'] : \'index\';
        $class="\\Controller\\{$_GET[\'m\']}\\{$_GET[\'c\']}";
        $controller=new $class;
        if(method_exists($controller, $_GET[\'a\'])){
            $controller=new $class;
            $controller->$_GET[\'a\']();
        }else{
            header("HTTP/1.1 404 Not Found");
            echo "404";
        }
    }
    //致命错误回调
    public static function shutdownCallback(){
        $e=error_get_last();
        if(!$e) return;
        self::myErrorHandler($e[\'type\'],\'<font color="red">Fatal Error</font> \'.$e[\'message\'],$e[\'file\'],$e[\'line\']);
    }
    //错误处理
    protected static function myErrorHandler($errno,$errstr,$errfile,$errline){
        list($micseconds,$seconds)=explode(" ",microtime());
        $micseconds=round($micseconds*1000);
        $micseconds=strlen($micseconds)==1 ? \'0\'.$micseconds : $micseconds;
        if(php_sapi_name()=="cli"){
            $break="\r\n";
        }else{
            $break="<br/>";
        }
        $mes="[".date("Y-m-d H:i:s",$seconds).":{$micseconds}] ".$errfile." ".$errline." line ".$errstr.$break;
        echo $mes;        
    }
    //注册
    public static function register(){
        error_reporting(0);
        set_error_handler(function($errno,$errstr,$errfile,$errline){
            self::myErrorHandler($errno,$errstr,$errfile,$errline);
        });
        register_shutdown_function(function(){
            self::shutdownCallback();
        });
        spl_autoload_register("self::loadClass");
    }
}

如何使用

index.php

<?php
//路由映射
$rules=array(
    \'^user$\'=>\'User/User/getUserList\',
    \'^user\/(\d+)$\'=>\'User/User/getUserById/id/$1\',
    \'^user\/(\d+)\/article$\'=>\'User/User/getUserArticle/uid/$1\'
);
require_once "SimpleLoader.php";
SimpleLoader::run($rules);

控制器啥样

\Controller\User\User.php

<?php
namespace Controller\User;

class User{
    public function getUserById(){
        echo "用户信息id {$_GET[\'id\']} 的信息";
    }
    public function getUserList(){
        echo "用户列表";
    }
    public function getUserArticle(){
        echo "用户id {$_GET[\'uid\']} 的文章列表";
    }
}

效果呢：