3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'like'; $whitelist = ['like', 'hate']; if (in_array($string, $whitelist)) { echo "valid: $string"; } else { echo "invalid: $string"; }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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
valid: like
preferences:
110.98 ms | 408 KiB | 5 Q