3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $val = 12; $bin_val = 1 << ($val -1); var_dump($bin_val); var_dump(pow(2, $val)); $val = 1 >> ($val - 1); var_dump($val);
based on vHlpi
Output for 4.3.0 - 7.2.0
int(2048) int(4096) int(0)