无法获取http请求头信息 getallheaders()、apache_get_version()等一系列函数无效

    2.         if (!function_exists('getallheaders')) {
    3.             function getallheaders() {
    4.                 $headers = array();
    5.                 foreach ($_SERVER as $name => $value) {
    6.                 if (substr($name, 0, 5) == 'HTTP_') {
    7.                  $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
    8.                 }
    9.             }
    10.             return $headers;
    11.             }
    12.         }
    14.         $header = getallheaders();
    15.         if(empty($header)){
    16.             return $this->createErrorResponse('请求头中参数缺失');
    17.         }
    18.         $token = $header['Authorization'];