生成zend cache ID 用于清除指定的zend cache page.

/*  *  使用方法，清除对'/zhidao/?page=1&id=2'的缓存。  Zend_Loader::loadClass('Custom_Cacheid');  $cacheId=Custom_Cacheid::makeId('/zhidao/?page=1&id=2',Config::$cacheOptions);    $GLOBALS['cache']->remove($cacheId);  */ class Custom_Cacheid {    static $Get=NULL;  static $Post=NULL;  static $Session=NULL;  static $Cookie=NULL;  /**      * 根据提供的url，及缓存选项（本系统中是Config::$cacheOptions）返回缓存的id   * 通过设置$param来改变$_GET,$_POST,$_COOKIE,$_SESSION值，     例如：     $param = array(          'Post'=>array('id'=>1,'page'=>1)         );     表示设定$_POST参数为array('id'=>1,'page'=>1)。     注意：get参数是自动根据url获取的     注意：$url 中 ? 后的get参数不能错误比如 ?a==&page=1；str2arr只是一个简单的函数，它可能与php分析方法不同，导致不能取得正确的id      */     static public function makeId($url, $activeOptions, $param=array())     {         foreach($param as $key=>$value){    self::$$key = $value;   }   if(strpos($url,'?')!==false){    self::$Get = self::str2arr(substr($url,strpos($url,'?')));   }   $tmp = $url;         foreach (array('Get', 'Post', 'Session', 'Files', 'Cookie') as $arrayName) {                 $tmp2 = self::_makePartialId(         $arrayName,         isset($activeOptions['cache_with_' . strtolower($arrayName) . '_variables'])?$activeOptions['cache_with_' . strtolower($arrayName) . '_variables']:false,         isset($activeOptions['make_id_with_' . strtolower($arrayName) . '_variables'])?$activeOptions['make_id_with_' . strtolower($arrayName) . '_variables']:true         );             if ($tmp2===false) {                 return false;             }             $tmp = $tmp . $tmp2;         }         return md5($tmp);     }

    /**      * Make a partial id depending on options      *      * @param  string $arrayName Superglobal array name      * @param  bool   $bool1     If true, cache is still on even if there are some variables in the superglobal array      * @param  bool   $bool2     If true, we have to use the content of the superglobal array to make a partial id      * @return mixed|false Partial id (string) or false if the cache should have not to be used      */     private static function _makePartialId($arrayName, $bool1, $bool2)     {         switch ($arrayName) {         case 'Get':             $var = !empty(self::$Get)?self::$Get:$_GET;             break;         case 'Post':             $var = !empty(self::$Post)?self::$Post:$_POST;             break;         case 'Session':    if(!empty(self::$Session)){      $var = self::$Session;    }else{     if (isset($_SESSION)) {      $var = $_SESSION;     } else {      $var = null;     }    }             break;         case 'Cookie':    if(!empty(self::$Cookie)){      $var = self::$Cookie;    }else{     if (isset($_COOKIE)) {      $var = $_COOKIE;     } else {      $var = null;     }    }             break;         case 'Files':             $var = $_FILES;             break;         default:             return false;         }         if ($bool1) {             if ($bool2) {                     return serialize($var);             }             return '';         }         if (count($var) > 0) {    echo $arrayName.'<hr>';             return false;         }         return '';     }  /*   * 把字符串转换成数组     例如传入 ?page=1&id=1 将返回array('page'=>1,'id'=>1)   */  static function str2arr($str){   $str=preg_replace("/^/?/","",$str);   $tmp=split("&",$str);   $return=array();   foreach($tmp as $t){    $string = split("=",$t);    if(count($string)==2){     $return[$string[0]] = $string[1];    }   }   return $return;  } }

Config::$cacheOptions

static $cacheOptions = array(       'cache' => true,       'cache_with_get_variables' => true,  //当有get变量时也进行缓存        'cache_with_post_variables' => false,  //当有post变量时不进行缓存        'cache_with_cookie_variables' => true, //当有cookie变量时也进行缓存       'cache_with_session_variables' => true, //当有session变量时也进行缓存       'make_id_with_cookie_variables' => false,       'make_id_with_session_variables' => false,       'make_id_with_post_variables' => false,       'make_id_with_files_variables' => false,       'make_id_with_get_variables' => true       );