3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = true; $b = false; $arr = array(); //$arr[] = 'asd'; echo $arr ? 'true' : 'false'; echo "no errors!" . $arr ? 'true' : 'false'; ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
false Warning: Array to string conversion in /in/Wm7oW on line 8 true
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
false Notice: Array to string conversion in /in/Wm7oW on line 8 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, 7.3.32 - 7.3.33
falsetrue

preferences:
239.46 ms | 403 KiB | 325 Q