PHP Manual: Fetch all HTTP request headers

Description

array apache_request_headers()

Fetches all HTTP request headers from the current request. Works in the Apache, FastCGI, CLI, and FPM webservers.

Parameters

This function has no parameters.

Return Values

An associative array of all the HTTP headers in the current request.

Changelog

Version	Description
7.3.0	This function became available in the FPM SAPI.

Examples

Example #1 apache_request_headers example

<?php
$headers = apache_request_headers();

foreach ($headers as $header => $value) {
    echo "$header: $value <br />\n";
}
?>

The above example will output something similar to:

Accept: */*
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0
Host: www.example.com
Connection: Keep-Alive

Notes

Note:
You can also get at the value of the common CGI variables by reading them from the environment, which works whether or not you are using PHP as an Apache module. Use phpinfo to see a list of all of the available environment variables.

apache_request_headers