New function proposal urlappendvar()

Hello list, I find often myself wanting to append a variable to an unknown url. The problem is that you don't know if you should append the var with ? or with &. Do you think it would be useful to have a builtin function that would do this automatically? example code as I do it actually: <?php

$foo       = mt_rand();

$separator = (ereg('?', $_SERVER['HTTP_REFERER'])) ? '&' : '?';

$url       = $_SERVER['HTTP_REFERER'].$separator.'foo='.$foo;

?> example code with the new version: <?php $foo = mt_rand(); $url = urlappendvar($_SERVER['HTTP_REFERER'], 'foo', $foo); ?> I use it quite frequently so I thought it could be useful to have such functionality builtin. What do you think? -- Juan Alonso Hernández Desarrollo, Seguridad y Sistemas www.art3mis.com | (34) 91 530 16 33