3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump( NULL, (int)NULL, FALSE, (int)FALSE, TRUE, (int)TRUE, NULL, (array)NULL, FALSE, (array)FALSE, TRUE, (array)TRUE );
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, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 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
NULL int(0) bool(false) int(0) bool(true) int(1) NULL array(0) { } bool(false) array(1) { [0]=> bool(false) } bool(true) array(1) { [0]=> bool(true) }

preferences:
202.9 ms | 406 KiB | 310 Q