Untitled

<?php
add_filter("gform_pre_render", "populate_dropdown");
add_filter("gform_admin_pre_render", "populate_dropdown");

function populate_dropdown($form){

    //only populating drop down for form id 122
    if($form["id"] != 122)
       return $form;


    //Creating campus drop down item array.
        $zip_code = $_POST["input_16"];
        $selected_campus = $_POST["input_2"];
        $selected_degree = $_POST["input_3"];

    $campus = get_campuses_by_zipcode($selected_campus, $zip_code);
        $degree = get_degrees($selected_campus, $selected_degree);


    foreach($form["fields"] as &$field){
                //Adding campuses to drop down (field id 2)
        if($field["id"] == 2){
            $field["choices"] = $campus;
        }

                //Adding degrees to drop down (field id 3)
                if($field["id"] == 3){
            $field["choices"] = $degree;
        }
        }
    return $form;
}

function get_campuses_by_zipcode($selected_campus, $zip_code){
        //Develop your logic here to get the list of available campuses.
        //Make sure to mark the selected item based on the $selected_campus variable
        $campuses = array();

        $campuses[] = array("text" => "Campus A", "value" => "Campus A", "isSelected" => true);
        return $campuses;
}

function get_degrees($selected_campus, $selected_degree){
        //Develop your logic here to get the list of available degrees based on the selected campus.
        //Make sure to mark the selected item based on the $selected_degree variable
        $degrees = array();

        $degrees[] = array("text" => "Degree A", "value" => "Degree A", "isSelected" => true);
        return $degrees;
}

?>