PHP获取http头信息

// 获取全部 HTTP 请求头信息---函数仅适用于 Apache 也可使用 别名 apache_request_headers()$is_headers = function_exists(‘getallheaders‘);$headers=array();if(!isset($is_headers)) #如果是nginx { ???foreach ($_SERVER as $key => $value) ???{ ???????if (‘HTTP_‘ == substr($key, 0, 5)) { ???????????$headers[str_replace(‘_‘, ‘-‘, substr($key, 5))] = $value; ???????} ???????if (isset($_SERVER[‘PHP_AUTH_DIGEST‘])) ???????{ ???????????$header[‘AUTHORIZATION‘] = $_SERVER[‘PHP_AUTH_DIGEST‘]; ???????} elseif (isset($_SERVER[‘PHP_AUTH_USER‘]) && isset($_SERVER[‘PHP_AUTH_PW‘])) ???????{ ???????????$header[‘AUTHORIZATION‘] = base64_encode($_SERVER[‘PHP_AUTH_USER‘] . ‘:‘ . $_SERVER[‘PHP_AUTH_PW‘]); ???????} ???????if (isset($_SERVER[‘CONTENT_LENGTH‘])) { ???????????$header[‘CONTENT-LENGTH‘] = $_SERVER[‘CONTENT_LENGTH‘]; ???????} ???????if (isset($_SERVER[‘CONTENT_TYPE‘])) { ???????????$header[‘CONTENT-TYPE‘] = $_SERVER[‘CONTENT_TYPE‘]; ???????} ???}}else{ ???$headers=getallheaders();}var_dump($headers);