3v4l.org

run code in 300+ PHP versions simultaneously
<?php function b($t,$s) { echo '[' . $s . ':' .($t ? 'true' : 'false') . ']'; return $t; } b((b(true,1) && b(false,2)) || b(false,3),4); echo "\n"; b((b(true,1) && b(true, 2)) || b(false,3),4); echo "\n"; b((b(false,1) && b(true,2)) || b(false,3),4);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
[1:true][2:false][3:false][4:false] [1:true][2:true][4:true] [1:false][3:false][4:false]
preferences:
292.66 ms | 406 KiB | 456 Q