[RESOLVED] ForEach error

[dclamp]

i am using a foreach to delete messages according to their id, stored in an array. It is from a form checkbox called "delete". Here is my code:

$delete = array();
$delete = $_POST['delete'];
foreach($delete as $messid) {
        //$delete1 is a $_GET...
    if ($delete1!="delete") {
        #MOVE TO TRASH CAN
        $sql = "UPDATE `messages` SET folder='trash' WHERE mess_id='$messid'";
        $query = mysql_query($sql);
        echo "Messages Was Sent To Trash Can!";
    } else {
        #DELETE MESSAGE
        $sql = "DELETE FROM `messages` WHERE mess_id='$messid'";
        $query = mysql_query($sql);
        echo "Message Was Deleted!";
    }
} 

i have also tried:

$delete = array($_POST['delete']; 

the error is:

Warning: Invalid argument supplied for foreach() in /home/jphendr/public_html/includes/delete_message.php on line 26

Line 26 is where foreach() is.