3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(-1); // show all possible errors $arr = null; $arr['i'] = $arr['i'] + 1; // No error var_dump($arr);
Output for 8.3.0 - 8.3.7
Warning: Trying to access array offset on null in /in/cM8YN on line 7 array(1) { ["i"]=> int(1) }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Warning: Trying to access array offset on value of type null in /in/cM8YN on line 7 array(1) { ["i"]=> int(1) }
Output for 7.4.0 - 7.4.33
Notice: Trying to access array offset on value of type null in /in/cM8YN on line 7 array(1) { ["i"]=> int(1) }
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 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33
array(1) { ["i"]=> int(1) }

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206.24 ms | 405 KiB | 352 Q