3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "\nFall a:"; if (0 == 0) { echo "TRUE"; } else { echo "false"; } echo "\nFall b:"; if (0 == "0") { echo "TRUE"; } else { echo "false"; } echo "\nFall c:"; if (0 == "1") { echo "TRUE"; } else { echo "false"; } echo "\nFall d:"; if (0 == "") { echo "TRUE"; } else { echo "false"; } echo "\nFall e:"; if ("abc123" >= array()) { echo "TRUE"; } else { echo "false"; } echo "\nFall f:"; if (array() >= "abc123") { echo "TRUE"; } else { echo "false"; } echo "\nFall g:"; if (456 == "456abc") { echo "TRUE"; } else { echo "false"; } echo "\nFall h:"; if (0 == "Chuck Norris") { echo "TRUE"; } else { echo "false"; } ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fall a:TRUE Fall b:TRUE Fall c:false Fall d:false Fall e:false Fall f:TRUE Fall g:false Fall h:false
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
Fall a:TRUE Fall b:TRUE Fall c:false Fall d:TRUE Fall e:false Fall f:TRUE Fall g:TRUE Fall h:TRUE

preferences:
283.6 ms | 405 KiB | 458 Q