3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = 'username1234_-'; var_dump(preg_match('/[\w\d_-]{3}+/', $string));
Output for 4.3.5 - 7.2.0
int(1)
Output for 4.3.0 - 4.3.4
Warning: Compilation failed: internal error: code overflow at offset 12 in /in/8AoZ4 on line 3 bool(false)