Online PHP editor | refs for 7VqqQ

@ 2013-05-22T03:22:25Z

<?php
function format(array &$collection) {
    foreach($collection as $k => $v) {
        $collection["prefix_{$k}"]  = $v;
    }
}
$collection = array('a' => 1, 'b' => 2, 'c' => 3);
var_dump($collection);
format($collection);
var_dump($collection);