PHP: get max upload

maxupl.php

<?php

function get_max_upl() {
	$max_upload = (int)(ini_get('upload_max_filesize'));
	$max_post = (int)(ini_get('post_max_size'));
	$memory_limit = (int)(ini_get('memory_limit'));
	return min($max_upload, $max_post, $memory_limit);
}