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@ 2014-10-15T12:59:13Z

<?php

set_time_limit(1);

$arr = ['a', 'b'];

$child = &$arr;
$i = 1;

foreach ($child AS $key => $fruit)
{
    $child[$i] = $fruit;
    unset($child[$key]);
    $i++;
}

var_dump($arr);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
set_time_limit: documentation ( source)

preferences:dark modelive preview

46.86 ms | 402 KiB | 5 Q