php url伪静态化解析
1、大家来说说URL映射吧
?
?一般url映射有两种方式,一种是通过mod_rewrite实现,这种网上教材很多我也不多说了。另外一种是在程序中模拟,比如类似zend
Framework中的那种方式/index.php/controller/action/var1/value1/var2/value2/。这里方
式其实最主要是通过一个统一的输入接口,然后对url进行解析,最后转发到相应的controller中的module。
? ? 我这里写了两个简单函数来模拟。
? ? 第一个函数主要是进行地址解析,把类似/index.php/controller/action/var1/value1/var2/value2/的地址解析出来,一般来说要解析成三部分:controller,module,params。
<?php /** *对url路由进行简单的解析,支持对/path/to/site/index.php/module/action/parm/value * /path/to/site/index.php?/module/action/parm/value和 * /path/to/site/?/module/action/parm/value三种形式的处理 *@param:null *@return:router array */ function url_router() { $path = strip_tags ( $_SERVER ['REQUEST_URI'] ); $strpos = strpos ( $path, '.php' ); if ($strpos) { $path = substr ( $path, $strpos + 4 ); } else { if (empty ( $_SERVER ['QUERY_STRING'] )) { $strpos = strpos ( $path, '?' ); if ($strpos) { $path = substr ( $path, $strpos + 1 ); } else { $path = ''; } } else { $path = $_SERVER ['QUERY_STRING']; } } //统一化$path的格式,如果$path的第一个字符为/则去掉 if ($path [0] == '/') { $path = substr ( $path, 1 ); } //解析,并且路由 if (! empty ( $path )) { $path = explode ( '/', $path ); $router ['controller'] = $path [0]; $router ['action'] = (! empty ( $path [1] )) ? $path [1] : 'index'; //print_r($path); for($i = 2; $i < sizeof ( $path ); $i = $i + 2) { $params [$path [$i]] = (isset ( $path [$i + 1] )) ? $path [$i + 1] : ''; } $router ['params'] = $params; } else { //默认路由信息 $router ['controller'] = 'index'; $router ['action'] = 'index'; $router ['params'] = array (); } return $router; } ?>
这里就完成主要的url解析功能,然后是转发映射,下面这个函数实现(注意这个函数的实现是结合了我自己的架构,所以你采用的话需要相应的修改,当然你的MVC如果类似zend Framework,那应该要该的不多。)
<?php function url_dispatch($router, $app_path = '/app/controllers/') { require_once (SERVER_PATH . '/libs/controller.class.php'); $controller = $router ['controller'] . 'Controller'; //echo SERVER_PATH.$app_path.$controller.'.class.php'; if (! file_exists ( SERVER_PATH . $app_path . $controller . '.class.php' )) die ( '缺少必要的类!' ); require_once (SERVER_PATH . $app_path . $controller . '.class.php'); $controller = new $controller (); $controller->_setParam ( $router ['params'] ); $controller->{$router ['action'] . 'Action'} (); return true; } ?>

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