<?
function gdVersion() {
    ob_start();
    phpinfo(8);
    $phpinfo=ob_get_contents();
    ob_end_clean();
    $phpinfo=stristr($phpinfo,"gd version");
    $phpinfo=stristr($phpinfo,"version");

    $end=strpos($phpinfo,"</tr>");
    if ($end) $phpinfo=substr($phpinfo,0,$end);
    $phpinfo=strip_tags($phpinfo);

    if (ereg(".*([0-9]+)\.([0-9]+)\.([0-9]+).*", $phpinfo, $r)) {
        $phpinfo=$r[1].".".$r[2].".".$r[3];
        }
    else $phpinfo=0;

    return($phpinfo);
    }

print gdVersion();
?>