3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [0,1,2,3,4,5,6]; $count = count($a); for($i=0;$i<$count;$i++){ echo 's ' . $i.PHP_EOL; if ($a[$i]==3) { unset($a[$i]); $count--; $i--; } echo 'e ' . $i.PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
s 0 e 0 s 1 e 1 s 2 e 2 s 3 e 2 s 3 Warning: Undefined array key 3 in /in/3Gmnr on line 6 e 3 s 4 e 4 s 5 e 5

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