Question

I have a dropdown which i want to fill through jquery. Problem that i am facing is that i want to call a class function directly from jquery. eg
My class_function PHP class contains get_locations function. how can i call this get_locations function using jquery .post method without introducing a third page?

Answer 1

The way I usually do that is to have an if statement at the top of the php page checking for a special mode.

jquery

$.get(
   'page.php?mode=ajaxGetLocations&someVar=' + $('#someVar').val(),
   function(data) { $('#myDropDown').html(data); }
);

PHP – near the top of the code

<?php
if (isset($_REQUEST['ajaxGetLocations'])
{
    $someVar = $_REQUEST['someVar'];
    // Get your data here

    // Output your select box here
    ?>
    <select>
    ...
    </select>
    <?php
    exit; // You don't want to keep processing the page
}
?>