3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = explode('|', '0|'); $ret = (int)array_shift($a); var_dump($ret); var_dump(isset($a[0])); var_dump($a[0]); //
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.32, 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 - 8.2.19, 8.3.0 - 8.3.7
int(0) bool(true) string(0) ""
preferences:
198.77 ms | 404 KiB | 295 Q