3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = []; if ($foo['a']['b'] === 'c') { echo 'foo'; } else { echo 'bar'; }
Output for 8.3.0 - 8.3.4
Warning: Undefined array key "a" in /in/VdH8D on line 5 Warning: Trying to access array offset on null in /in/VdH8D on line 5 bar
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17
Warning: Undefined array key "a" in /in/VdH8D on line 5 Warning: Trying to access array offset on value of type null in /in/VdH8D on line 5 bar
Output for 7.4.0 - 7.4.33
Notice: Undefined index: a in /in/VdH8D on line 5 Notice: Trying to access array offset on value of type null in /in/VdH8D on line 5 bar
Output for 7.3.32 - 7.3.33
bar
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Notice: Undefined index: a in /in/VdH8D on line 5 bar

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227 ms | 403 KiB | 252 Q