Custom additional values using pmpro-register-helper

function.php

function my_pmprorh_init()
{
    
    $last_university = get_option('last_university');
    $last_university = explode(',', $last_university);
    $highest_level_of_education = get_option('highest_level_of_education');
    $highest_level_of_education = explode(',', $highest_level_of_education);
    // print_r($last_university);

    if (!function_exists('pmprorh_add_registration_field'))
    {   
        return false;
    }

    $fields = array();
    $fields[] = new PMProRH_Field(
        "select_last_university_opt",         // input name, will also be used as meta key
        "select",                  // type of field
        array(
            "label" => "Last University",
            'options' => $last_university,
            'profile' => true, //show in user's profile
            'memberslistcsv' => true
        ));
    $fields[] = new PMProRH_Field(
        "select_highestLevel_edu_opt", 
        "select",                 
        array(
            "label"=>"Highest level of Education",
            'options'=> $highest_level_of_education,
            'profile' => true, 
            'memberslistcsv' => true
        ));

    //add the fields into a new checkout_boxes are of the checkout page
    foreach($fields as $field)
        pmprorh_add_registration_field(
            "checkout_boxes", // location on checkout page
            $field            // PMProRH_Field object
        );
    //that's it. see the PMPro Register Helper readme for more information and examples.
}
add_action("init", "my_pmprorh_init");

gistfile1.txt

function my_pmprorh_init()
{
    
    $last_university = get_option('last_university');
    $last_university = explode(',', $last_university);
    $highest_level_of_education = get_option('highest_level_of_education');
    $highest_level_of_education = explode(',', $highest_level_of_education);

    if (!function_exists('pmprorh_add_registration_field'))
    {   
        return false;
    }

    $fields = array();
    $fields[] = new PMProRH_Field(
        "select_last_university_opt",         // input name, will also be used as meta key
        "select",                  // type of field
        array(
            "label"=>"Last University",
             'options'=> $last_university,
            "profile"=>true //show in user's profile
        ));
    $fields[] = new PMProRH_Field(
        "select_highestLevel_edu_opt",         // input name, will also be used as meta key
        "select",                  // type of field
        array(
            "label"=>"Highest level of Education",
             'options'=> $highest_level_of_education,
            "profile"=>true //show in user's profile
        ));

    //add the fields into a new checkout_boxes are of the checkout page
    foreach($fields as $field)
        pmprorh_add_registration_field(
            "checkout_boxes", // location on checkout page
            $field            // PMProRH_Field object
        );
    //that's it. see the PMPro Register Helper readme for more information and examples.
}
add_action("init", "my_pmprorh_init");