<?php function removeSomeElements($arr) { for ($i = 0; $i<count($arr); $i++) { $c = $arr[$i]; if ($c > 2) { echo "Element $c found at $i\n"; unset($arr[$i]); } } print_r($arr); // misses middle element return $arr; } $t = [0, 3, 1]; print_r($t); // original array $t = removeSomeElements($t); print_r($t); // should be missing middle element, but everything is here
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