apache_request_headers

apache_request_headers.php

<?php
if( !function_exists('apache_request_headers') ) {
    function apache_request_headers() {
        $arh = array();
        $rx_http = '/\AHTTP_/';
        foreach($_SERVER as $key => $val) {
            if( preg_match($rx_http, $key) ) {
                $arh_key = preg_replace($rx_http, '', $key);
                $rx_matches = array();
                // do some nasty string manipulations to restore the original letter case
                // this should work in most cases
                $rx_matches = explode('_', $arh_key);
                if( count($rx_matches) > 0 and strlen($arh_key) > 2 ) {
                    foreach($rx_matches as $ak_key => $ak_val) $rx_matches[$ak_key] = ucfirst($ak_val);
                    $rx_matches = array_map(function($str){ return ucfirst(strtolower($str)); }, $rx_matches);
                    $arh_key = implode('-', $rx_matches);
                }
                $arh[$arh_key] = $val;
            }
        }
        return( $arh );
    }
}