bp_admin_assign_member_type()

function bp_admin_assign_member_type() {


	$users = get_users( [
		'fields' => [ 'ID' ]
	] );

	foreach ( $users as $user ) {

		$member_type = bp_get_member_type( $user->ID );

		if ( false === $member_type ) {

			// Get the user object.
			$user1 = get_userdata( $user->ID );

			if ( ! in_array( 'administrator', $user1->roles, true ) ) {

				$existing_selected = bp_member_type_default_on_registration();
				// Assign the default member type to user.
				bp_set_member_type( $user->ID, '' );
				bp_set_member_type( $user->ID, $existing_selected );
			}
		}
	}

	// Description of this tool, displayed to the user.
	$statement = __( 'Assign users without a profile type to the default profile type records… %s', 'buddyboss' );


	$result = __( 'Complete!', 'buddyboss' );

	// All done!
	return array( 0, sprintf( $statement, $result ) );
}