Assign User Role Conditionally in WordPress

/**

 * Assigns a specific WordPress user role based on the selected value in a WPForms multiple-choice field.

 * 

 * @link https://wpforms.com/how-to-assign-user-roles-conditionally-in-wordpress/

 * 

 * @param array $user_data Array containing user registration data.

 * @param array $fields    Array of form fields and their submitted values.

 * @param array $form_data Array of form metadata, including the form ID.

 *

 * @return array Modified $user_data with the assigned role if a match is found.

 */

function assign_role_during_registration( $user_data, $fields, $form_data ) {

    // The ID of your form and the field used for selecting the role

    $form_id       = '13'; // Replace with your form ID

    $role_field_id = '6'; // Replace with the ID of your "Multiple Choice" field

    // Ensure we're working with the correct form

    if ( $form_data['id'] !== $form_id ) {

       return $user_data;

    }

    // Mapping values from the field to WordPress roles

    $role_mapping = [

       'Student' => 'author',

       'Teacher' => 'editor',

    ];

    // Retrieve the selected value from the field

    $selected_role = isset( $fields[ $role_field_id ]['value'] ) ? $fields[ $role_field_id ]['value'] : '';

    // Check if the selected value exists in the mapping

    if ( array_key_exists( $selected_role, $role_mapping ) ) {

       // Assign the corresponding role to the user

       $user_data['role'] = $role_mapping[ $selected_role ];

    }

    return $user_data;

}

add_filter( 'wpforms_user_registration_process_registration_get_data', 'assign_role_during_registration', 10, 3 );