3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = "экономика и управление на предприятии"; $search = 'ЭкОн'; var_dump(preg_match('/' . $search . '/iu', $str));
based on rZUel
Output for 4.4.0 - 4.4.9, 5.0.5 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.0
int(1)
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
int(0)