getallheaders() is an alias for apache_request_headers(). It will return an associative array of all the HTTP headers in the current request. Please read the apache_request_headers() documentation for more information on how this function works.
注: In PHP 4.3.0, getallheaders() became an alias for apache_request_headers(). Essentially, it was renamed. This is because this function only works when PHP is compiled as an Apache Module.
注: 自 PHP 4.3.3 起也可以在 Netscape/iPlanet/SunONE 服务器的 NSAPI server module 中使用本函数。
See also apache_request_headers().