<?php
$example = array(572=>"i","don't","care","much","for","keys");
print_r($example);
$values = array_values($example);
print_r($values);
?>
Array ( [572] => i [573] => don't [574] => care [575] => much [576] => for [577] => keys )
Array ( [0] => i [1] => don't [2] => care [3] => much [4] => for [5] => keys )