PHP Tutorial : Strpos and Strrpos

Basic thing, strpos and strrpos are two php functions which are used to find the position of first and/or last occurrence in a string – word (usefull for example when you want to build a function to get file extension). I hear you saying enough talking, let me see the available examples :

<?php
//get first occurrence

$string = "this string";
$find = "i";

print strpos($string,$find);//should print 2


print strrpos($string,$find); //should print 8

?>