public function getUserSanitizeFuncConetxt()
 {
     //判断本地序列化文件中是否存在UserSanitizeFuncConetxt
     if (($serial_str = file_get_contents(CURR_PATH . "/data/sanitizeFuncConetxtSerialData")) != '') {
         $sanitizeFunctions = unserialize($serial_str);
         $funcContext = UserSanitizeFuncConetxt::getInstance();
         $funcContext->sanitizeFunctions = $sanitizeFunctions;
         return;
     }
     global $allFiles;
     $filearr = $allFiles;
     $len = count($filearr);
     for ($i = 0; $i < $len; $i++) {
         $this->visitor->filePath = $filearr[$i];
         $code = file_get_contents($this->visitor->filePath);
         try {
             $stmts = $this->parser->parse($code);
         } catch (PhpParser\Error $e) {
             //echo 'Parse Error: ', $e->getMessage();
             continue;
         }
         $this->traverser->traverse($stmts);
         //遍历AST
     }
     $funcContext = UserSanitizeFuncConetxt::getInstance();
     //对UserSanitizeFuncConetxt进行序列化,加快下次读取速度
     $this->serializeContext($funcContext);
 }
 /**
  * 检测是否为系统净化函数或已处理的净化函数
  * @param 函数名 $funcName
  * @return array(true|false,type)
  */
 public static function isSecureFunction($funcName)
 {
     global $F_SECURES_ARRAY, $F_SECURES_ALL;
     $nameNum = count($F_SECURES_ARRAY);
     //查找系统净化函数
     if (in_array($funcName, $F_SECURES_ALL)) {
         $type = array();
         for ($i = 0; $i < $nameNum; $i++) {
             if (in_array($funcName, $F_SECURES_ARRAY[$i])) {
                 array_push($type, $F_SECURES_ARRAY[$i]['__NAME__']);
             }
         }
         if ($type) {
             return array(true, 'type' => $type);
         } else {
             return array(false);
         }
     } else {
         //已经查找过的用户定义净化函数
         $sanitiFuncContext = UserSanitizeFuncConetxt::getInstance();
         $ret = $sanitiFuncContext->getFuncSanitizeInfo($funcName);
         if ($ret) {
             return array(true, 'type' => $ret->getSanitiType());
         } else {
             return array(false);
         }
     }
 }