3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = 'PT3M'; $pattern = '/PT?[0-9]+[SMWYD]'; $replacement = '#'; echo preg_replace($pattern, $replacement, $string);
Output for 4.3.11 - 7.1.0
Warning: preg_replace(): No ending delimiter '/' found in /in/i475Y on line 6
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '/' found in /in/i475Y on line 6