3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('/[a-z]/g', '$1', 'abc');
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_replace(): Unknown modifier 'g' in /in/i1L5Z on line 3
Output for hhvm-3.10.0 - 3.12.0
Warning: Unknown modifier 'g': [/[a-z]/g] in /in/i1L5Z on line 3
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier 'g' in /in/i1L5Z on line 3