PHP Manual: Fetch all HTTP response headers

array apache_response_headers()

Fetch all HTTP response headers. Works in the Apache, FastCGI, CLI, and FPM webservers.

This function has no parameters.

An array of all Apache response headers on success.

Example #1 apache_response_headers example

<?php
print_r(apache_response_headers());
?>

The above example will output something similar to:

Array
(
    [Accept-Ranges] => bytes
    [X-Powered-By] => PHP/4.3.8
)

apache_response_headers