3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = array(0,1,2,3,4); unset($foo[2]); for ($i = 0; $i < count($foo); $i++) { $x = $foo[$i]; }
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
Warning: Undefined array key 2 in /in/JqHr9 on line 8
Output for 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 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined offset: 2 in /in/JqHr9 on line 8
Output for 7.3.32 - 7.3.33
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
Notice: Undefined offset: 2 in /in/JqHr9 on line 8

preferences:
349.13 ms | 402 KiB | 455 Q