Add custom validation for Register Helper fields when editing from profile page

pmprorh-validate-on-profile-edit.php

/*
    Add custom validation for Register Helper fields when editing from profile page.
    Requires Paid Memberships Pro and Register Helper Add On.
*/

function my_pmprorh_user_profile_validate_rhfields($errors, $update, $user) {
    if( isset( $_POST['my_errors'] ) ){
        $my_errors = $_POST['my_errors'];
        foreach( $my_errors as $single_error){
            $errors->add('my_pmprorh_error',__($single_error));
        }
    }
}

add_filter( 'user_profile_update_errors', 'my_pmprorh_user_profile_validate_rhfields', 10, 3 );

function my_pmprorh_user_profile_unset_rhfields($user_id) {
    $errors = array();
    
    // check to see if form was filled out correctly
    if( $_POST['pmprorh_county'] == "Cook" ){
        unset($_POST['pmprorh_county']);
        // not correct? tell them why
        $errors[] = "Not available in Cook County.";
    }

    if( $_POST['pmprorh_town'] == "Chicago" ){
        unset($_POST['pmprorh_town']);      
        $errors[] = "Not available in Chicago .";
    }

    if( count($errors) ) {
        $_POST['my_errors'] = $errors;
    }
}
add_action( 'personal_options_update', 'my_pmprorh_user_profile_unset_rhfields', 5, 1 );
add_action( 'edit_user_profile_update', 'my_pmprorh_user_profile_unset_rhfields', 5, 1 );

function my_pmprorh_init_2()
{
    //don't break if Register Helper is not loaded
    if(!function_exists("pmprorh_add_registration_field"))
    {
        return false;
    }
    //define the fields
    $fields = array();
    $fields[] = new PMProRH_Field(
        'pmprorh_town',			       	        // input name, will also be used as meta key
        'text',					      	// type of field
        array(
            'label'		=> 'Town',	                // custom field label
            'size'		=> 30,				// input size
            'profile'	=> true,			// show in user profile
            'required'	=> true,			// make this field required
            'addmember' => true
        )
    );
    
    $fields[] = new PMProRH_Field(
        'pmprorh_county',			       	        // input name, will also be used as meta key
        'text',					      	// type of field
        array(
            'label'		=> 'County',	                // custom field label
            'size'		=> 30,				// input size
            'profile'	=> true,			// show in user profile
            'required'	=> false,			// make this field required
            'addmember' => true   
        )
    );
    //add the fields into a new checkout_boxes are of the checkout page
    foreach($fields as $field)
        pmprorh_add_registration_field(
            "checkout_boxes", // location on checkout page
            $field            // PMProRH_Field object
        );
}
add_action("init", "my_pmprorh_init_2");