PHP

how to get all roles in wordpress

/* get all role in wordpress in associative key = role(slug) => value(Role Display name) by joshiyogesh0333@gmail.com  */
function get_role_names() {

global $wp_roles;

if ( ! isset( $wp_roles ) )
    $wp_roles = new WP_Roles();

return $wp_roles->get_names();
}

get users by role wordpress

$getDealers = get_users( 
					array(
						'role'         => 'dealership',
						'orderby'      => 'nickname'
					)
				);
				
				if($getDealers) {			
					foreach($getDealers as $getDealer) {
						if($getDealer->ID == $new_user_data->dealer){
							update_user_meta($new_user_id, 'yews_data_dealership_name', $getDealer->nickname);
						}
					}
				}

wordpress get wp roles

function get_role_names() {

global $wp_roles;

if ( ! isset( $wp_roles ) )
    $wp_roles = new WP_Roles();

return $wp_roles->get_names();
}