Youzify - BuddyPress Assign Existing Users with Specific Roles to Specific Member Type

yzc_get_linked_member_types_and_user_roles_2.php

<?php

function yzc_get_linked_member_types_and_user_roles_2() {

    // Set Member Type Name => User Role
    return array(
        'teacher' => 'subscriber',
        'type2' => 'editor'
    );

}

add_action( 'bp_init' ,'yzc_update_all_profile_membertypes' );
function yzc_update_all_profile_membertypes() {

    if ( get_option( 'yzc_update_all_profile_membertypes' ) ) {
        return;
    }

		// Get Member Types and their Users Roles
		$member_roles = yzc_get_linked_member_types_and_user_roles_2();

		$member_types = array_flip( $member_roles );

    // Get all users.
    $authors = get_users( array( 'fields' => 'id' ) );
    // Update Fields.
    foreach ( $authors as $user_id ) {
			$user = get_userdata( $user_id );
			foreach($member_roles as $member_role) {
				if ( in_array( $member_role, (array) $user->roles ) ) {
					bp_set_member_type( $user_id, $member_types[ $member_role ] );
				}
			}
    }

    update_option( 'yzc_update_all_profile_membertypes', 1 );
}