3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = 'Lorem ipsum dolor sit amet.'; $alphanumeric = preg_match('~^[\pL\pN]++$~iu'); var_dump($alphanumeric);
Output for 4.3.3 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match() expects at least 2 parameters, 1 given in /in/7tqsM on line 5 bool(false)
Output for hhvm-3.12.0
Warning: preg_match() expects at least 2 parameters, 1 given in /in/7tqsM on line 5 NULL
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 4.3.2
Warning: Wrong parameter count for preg_match() in /in/7tqsM on line 5 NULL