3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array("foo", "baa", "ahahaha"); unset($a[1]); echo '<pre>'; print_r($a); for($i = 0; $i < count($a); $i++) { echo 'val at ', $i; echo " ", $a[$i], "\r\n"; }
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
<pre>Array ( [0] => foo [2] => ahahaha ) val at 0 foo val at 1 Warning: Undefined array key 1 in /in/YcIFa on line 10
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
<pre>Array ( [0] => foo [2] => ahahaha ) val at 0 foo val at 1 Notice: Undefined offset: 1 in /in/YcIFa on line 10
Output for 7.3.32 - 7.3.33
<pre>Array ( [0] => foo [2] => ahahaha ) val at 0 foo val at 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
<pre>Array ( [0] => foo [2] => ahahaha ) val at 0 foo val at 1 Notice: Undefined offset: 1 in /in/YcIFa on line 10
preferences:
276.64 ms | 402 KiB | 460 Q