3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str='Rsds'; var_dump($str); $a = preg_replace('/[a-zA-Z0-9áéíóúñÁÉÍÓÚÑ]+/u', '', $str); var_dump($a);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(4) "Rsds" string(0) ""