Strip last numeral to 0

This script strips the last numeral in any given number and acts as if it's "rounding" the number off, when in actuality, it's only replacing the last numeral with a "0"

Script was written and can be seen in action on http://web-design-masters.com where it says "...team of over 100 designers...".

<?

// By: Andrew Heebner
// Written For Web Design Masters

$fullnum = (strlen($num)-1);
$getnums = substr($num,0,$fullnum);
$output = $getnums."0";
print $output;

?>