AJAX multiple checkboxes / multiselect

Alrighty then, howdy first off; quick question I have a form that has multiple check boxes with the same name (i.e. -

<input type="checkbox" name="myname[]" value="1" />
<input type="checkbox" name="myname[]" value="1" />
<input type="checkbox" name="myname[]" value="2" />
<input type="checkbox" name="myname[]" value="3" />
<input type="checkbox" name="myname[]" value="4" />


I am not using JQuery as I don't need that much baggage it is a very simple script that does does what is says on the tin, just serialize a form for use in an ajax post request. I would like to know though how to serialize the multiple checkboxes above for correct use in php.


I think the easiest way would be to grab all the checkboxes with document.getElementsByName and loop to get what's checked.

var checkedValues = [];
var allCheckboxes = document.getElementsByName("myname[]");
for(var i = 0; i < allCheckboxes.length; i++){
    if (allCheckboxes[i].checked)

I assume PHP can treat a comma-delimited list of values as an array:

checkedValues.join();   //tested and produces ---> 0,3,4

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