wp_check_post_lock( int|WP_Post $post ): int|false

1715function wp_check_post_lock( $post ) {1716	$post = get_post( $post );1717 1718	if ( ! $post ) {1719		return false;1720	}1721 1722	$lock = get_post_meta( $post->ID, '_edit_lock', true );1723 1724	if ( ! $lock ) {1725		return false;1726	}1727 1728	$lock = explode( ':', $lock );1729	$time = $lock[0];1730	$user = isset( $lock[1] ) ? (int) $lock[1] : (int) get_post_meta( $post->ID, '_edit_last', true );1731 1732	if ( ! get_userdata( $user ) ) {1733		return false;1734	}1735 1736	/** This filter is documented in wp-admin/includes/ajax-actions.php */1737	$time_window = apply_filters( 'wp_check_post_lock_window', 150 );1738 1739	if ( $time && $time > time() - $time_window && get_current_user_id() !== $user ) {1740		return $user;1741	}1742 1743	return false;1744}