3v4l.org

run code in 500+ PHP versions simultaneously
<?php $arr = array(7, NAN, 3,); echo(sort($arr)); var_dump($arr);
Output for 7.1.10 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
1array(3) { [0]=> float(NAN) [1]=> int(3) [2]=> int(7) }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
1array(3) { [0]=> int(7) [1]=> float(NAN) [2]=> int(3) }
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28
1array(3) { [0]=> int(3) [1]=> float(NAN) [2]=> int(7) }

preferences:
117.7 ms | 1813 KiB | 4 Q