3v4l.org

run code in 300+ PHP versions simultaneously
<?php $hehe = [ "xd", "11", "1a1", "a11", "b1", "3", "0", "FFxD", "0x44" ]; array_map(function($value){ var_dump( filter_var($value, FILTER_VALIDATE_INT) ); }, $hehe);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false) int(11) bool(false) bool(false) bool(false) int(3) int(0) bool(false) bool(false)
preferences:
188.86 ms | 404 KiB | 238 Q