3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = 'PT3M'; $pattern = '/[0-9]+/i'; $replacement = '#'; echo preg_replace($pattern, $replacement, $string);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
PT#M