3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(filter_var('-1.0', FILTER_VALIDATE_INT)); var_dump(filter_var(-1.0, FILTER_VALIDATE_INT)); function validatesAsInt($number) { $number = filter_var($number, FILTER_VALIDATE_INT); return ($number !== FALSE); } var_dump(validatesAsInt('-1.0')); var_dump(validatesAsInt(-1.0));
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
bool(false) int(-1) bool(false) bool(true)
preferences:
154.77 ms | 407 KiB | 5 Q