gistfile1.aw

<pre>
<?php
$arr = array();
$tmp = array("1,2,3","3,4,5");

$push_array = function($array,$val)
{
    return (isset($array)) ? array_merge($array,$val) : $val;
}

foreach($tmp as $t) {
        $arr['id'] = array (
                'some' => 'blabla1',
                'keys' => 'blabla2',
                'test' => $push_array($arr['id']['test'],array_filter(explode(',',$t)))
        );
}
array_unique($arr['id']['test']);
var_dump($arr['id']['test']);

?>
</pre>