Online PHP editor | refs for 9QkLG

@ 2014-01-17T18:54:45Z

<?php

$string = 'PT3M';
$pattern = '/[0-9]+/i';
$replacement = '#';
echo preg_replace($pattern, $replacement, $string);

$pattern = '/[0-9]+/i';
$replacement = '/[0-9]+/i';
echo preg_replace($pattern, $replacement, $string);