Match patterns in two different arrays

Hi

Does anyone know an easy way to match patterns in two different arrays like so...

<?php
// INPUT DATA
$old_array = array("a", "b", "c", "d", "e", "f", "g", "c");
$new_array = array("c", "d", "e", "f", "g", "a", "b", "c");

// OUTPUT DATA
// value [corresponding 'array key' of $old_array]
// $new_array starts with 'c'... 
// c [7]
// d e f [3] [4] [5]
// g [6]
// a b c [0] [1] [2]
?>

PHP:

Many thanks for any help...

 

following links might be useful..

http://www.phpfreaks.com/forums/index.php?topic=239821.0

http://stackoverflow.com/questions/683702/how-do-you-perform-a-pregmatch-where-the-pattern-is-an-array-in-php