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run code in 200+ php & hhvm versions
Bugs & Features
<?php $re = '([-_.\\w]+)i'; var_dump(preg_match($re, 'dsfg'));
based on VYtbG
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
int(1)