selecting checkboxes
Say you have a few checkboxes, defined as below: Item 1 Item 2 Item 3 Basic stuff. Now you want to get those that are checked. In PHP $cb_arr = $_POST["items"]; In javascript, or jquery var cb_arr = $(".my_cb:checked"); Notice the cb_arr above is not a js array. You need to use .each() to iterate through the items. To pass that to php via ajax, you can serialize it like this: var cb_arr_str = $(".my_cb:checked").map(function() { return this.value; }).get().join(','); My point here is this. The ids turn out to be quite useless when dealing with checkboxes. ...