3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo1 = []; echo (int)($foo1['bar'] ?? 1); $foo2 = []; echo (int)$foo2['bar'] ?? 2;
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
1 Warning: Undefined array key "bar" in /in/Becjg on line 6 0
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
1 Notice: Undefined index: bar in /in/Becjg on line 6 0
Output for 7.3.32 - 7.3.33
10
preferences:
211.39 ms | 401 KiB | 211 Q