[PHP] Esplodere un array ed aggiungerlo in un array

[Il_Drugo]

<?php

$array[0] = "10_11_12";
$array[1] = "1_4";
$array[2] = "8_9";

for($i=0;$i<count($array);$i++)
{
    if($array[$i] != "")
    {
        $tmp_array = explode("_", $array[$i]);
        for($r=0;$r<count($tmp_array);$r++)
        {
            $ordini[] = $tmp_array[$r];
        }
    }
}

print("<pre>");
print_r($ordini);
print("</pre>");

/*

Array
(
    [0] => 10
    [1] => 11
    [2] => 12
    [3] => 1
    [4] => 4
    [5] => 8
    [6] => 9
)
*/

?>