3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'Ukraine -- Russia or Iran - Argentina'; preg_match('/[\w]+-.[\w]+/', $a, $m); var_dump($m);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(0) { }