3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(0 <> ''); var_dump(0 != ''); var_dump(0 !== '');
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(true) bool(true) bool(true)
Output for 7.4.0 - 7.4.33
bool(false) bool(false) bool(true)
preferences:
128.86 ms | 401 KiB | 121 Q