Question

Hello wise stackoverflow users

I am currently working on a private messaging system in PHP, and i am stuck at making a function to delete multiple selected messages. As it is right now, it is working but i get the warning:

Warning: Invalid argument supplied for foreach() in /var/www/PM/delete.php on line 7

I use jquery to sent the data to another php file called delete.php.

First thing first, my checkboxes look like this:

<input type="checkbox" class="message_checkbox" name="pms[]" value="<? echo $loadData['id']; ?>" id="<? echo $loadData['id']; ?>">

And my jquery script look like the following:

<script>
$(function(){
    $("a.delete").click(function(){
        var message = new Array();
        $("input[@name='pms[]']:checked").each(function() {
            message.push($(this).val());
        });

        $.ajax({
            type: 'POST',
            url: 'PM/delete.php',
            data: { id: message },
            success: function(html) {
                alert("all done");
            }
        });
    })
})
</script>

My delete.php looks like the following:

<?php ob_start();
include("../config.php");

$rows2del = $_POST["id"];

foreach($rows2del as $id) /* Line 7*/
{
        mysql_query("UPDATE user_pm SET reciev_deleted = '1' WHERE id = '$id'") or die(mysql_error());
}   
?>

Anyone who can tell me what i am doing wrong?

Note: Im very new in the jquery and javascript field!

Answer 1

Your selector is wrong $("input[@name='pms[]']:checked") there is no @name attribute you might be thinking about xpath. It should just be $("input[name='pms[]']:checked")

So you’re passing an empty array here data: { id: message }, which will not add the id parameter to you post request, therefore $_POST["id"]; will be empty.