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@ 2013-12-19T08:43:55Z

<?php

$arr = array(0,null,3,null);
foreach ($arr as &$row) {
    if ($row == null)
       unset($row);
}
var_dump($arr);

Output
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var_dump: documentation ( source)

preferences:dark modelive preview

31.36 ms | 402 KiB | 5 Q