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run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = "2341235556435643434"; var_dump(preg_match("~^[0-1A-Fa-f]{24}$~", $str));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(0)