3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('[0-9a-zA-Z]', 'bob', $matches), $matches); var_dump(preg_match('~[0-9a-zA-Z]~', 'bob', $matches), $matches); var_dump(preg_match('~[0-9a-zA-Z]+~', 'bob', $matches), $matches);
based on MoW66
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
int(0) array(0) { } int(1) array(1) { [0]=> string(1) "b" } int(1) array(1) { [0]=> string(3) "bob" }
Output for hhvm-3.10.0

Process exited with code 153.