Passing variables with checkboxes = Multiple MySQL row updates - help

How can I take these array values, which were submit via a form
Array ( [0] => Done [1] => 1 [2] => Northeast Ridge [3] => 2 [4] => Done [5] => 1 [6] => Kahiltna Spire [7] => 4 )

and have then put into variables that can update multiple rows in MySQL?

Here my code snipe from update page:

$com = array("$_POST[completed]", "$_POST[route_name]", "$_POST[id]", "$_POST[user_id]");
foreach ($com as $key => $values) {
include "include/db.php";
$query = "UPDATE ticklist SET completed = '$completed' WHERE route_name = '$route_name' AND id = '$id' AND user_id = '$user_id'";

$result = mysql_query($query,$db) or die(mysql_error($msg));

Basically I am trying update 2 rows in MySQL.