I want to manipulate a JavaScript array in PHP. Is it possible to do something like this?

$.ajax({

       type: POST,

       url: tourFinderFunctions.php,

       data: activitiesArray=+activities,

       success: function() {

            $(#lengthQuestion).fadeOut('slow');

       }

    });

Activities is a single dimensional array like:

var activities = ['Location Zero', 'Location One', 'Location Two'];

The script does not complete when I try this... How can I fix it?