3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_export('/^[' . preg_quote(',!@%^*()={};~`<>?\|' . ']*$/u', '/'));
based on iaq3T
Output for 4.3.0 - 7.2.0
'/^[,\\!@%\\^\\*\\(\\)\\=\\{\\};~`\\<\\>\\?\\\\\\|\\]\\*\\$\\/u'