3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(is_numeric('0x' . bin2hex(" union select 1")));
Output for 4.3.0 - 5.2.0, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
bool(false)
Output for 5.2.1 - 5.6.28
bool(true)