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@ 2013-08-21T10:34:38Z

<?php
$arr1 = array(
    'tes1' => array(1, 2, 3),
    'tes2' => array(2, 3, 4),
);
$arr2 = $arr1;

foreach($arr2 as &$item2) {
    $item2 = implode('+', $item2);
}

var_export($arr1);
var_export($arr2);

Output
Performance
VLD
References
Branches

var_export: documentation ( source)
implode: documentation ( source)

preferences:dark modelive preview

32.09 ms | 402 KiB | 5 Q