getheaders.php

<?php

if (!function_exists('getallheaders')) { 
    function getallheaders()  { 
           $headers = ''; 
       foreach ($_SERVER as $name => $value)  { 
           if (substr($name, 0, 5) == 'HTTP_') { 
               $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value; 
           } 
       } 
       return $headers; 
    } 
}