Anoying little if() true/flase thing

Here's part of a problematic script from a counter.

<?php

$string = "Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:1.4)
Gecko/20030624";
echo "$string\n<br>";

function searchid($search)
{
$pos = strpos($string, $search);

if($pos)
return true;

else
return false;
}

if (searchid("Gecko"))
echo "you are using a gecko browser";

else
echo "you are not using a gecko browser";

?>

It returns the false everytime, even though it's clear that Gecko is present
in the string. It's demontrated at
http://mikewilcox.t35.com:8000/truefalse.php
--
Michael Wilcox
Essential Tools for the Web Developer - http://mikewilcox.t35.com
mjwilco at yahoo dot com

Tom Thackrey <tomnr@creative-light.com> wrote:
> It's time to learn about variable scope. The variable $string in the
> function searchid is not the same as the $string you initialized and
> echo'd.
>
> Variables in a function are local to that function unless they are
> explicitly declared as global (or are one of the super-global
> variables).
>
> Add the following line to your function:
> global $string;

You're wonderful, you saved a lot of wasted time. :-)
--
Michael Wilcox
Essential Tools for the Web Developer - http://mikewilcox.t35.com
mjwilco at yahoo dot com