PHP Core_Common::sanitizeInputValue示例

 /**
  * If current URL is "http://example.org/dir1/dir2/index.php?               param1=value1&param2=value2"
  * will return "example.org"
  *
  * @param string $default Default value to return if host unknown
  * @return string
  */
 public static function getCurrentHost($default = 'unknown')
 {
     static $hostHeaders = null;
     if (is_null($hostHeaders)) {
         $config = Zend_Registry::get('config');
         if ($config !== false && isset($config->General->proxy_host_headers)) {
             $hostHeaders = $config->General->proxy_host_headers->toArray();
         }
         if (!is_array($hostHeaders)) {
             $hostHeaders = array();
         }
     }
     $default = Core_Common::sanitizeInputValue($default);
     if (isset($_SERVER['HTTP_HOST'])) {
         $default = Core_Common::sanitizeInputValue($_SERVER['HTTP_HOST']);
     }
     // @todo temporary workaround for #1331
     if (!method_exists('Core_Common', 'getProxyFromHeader')) {
         return $default;
     }
     return Core_Common::getProxyFromHeader($default, $hostHeaders);
 }