wp_get_post_revision( int|WP_Post $post, string $output = OBJECT, string $filter = 'raw' ): WP_Post|array|null

438function wp_get_post_revision( &$post, $output = OBJECT, $filter = 'raw' ) {439	$revision = get_post( $post, OBJECT, $filter );440 441	if ( ! $revision ) {442		return $revision;443	}444 445	if ( 'revision' !== $revision->post_type ) {446		return null;447	}448 449	if ( OBJECT === $output ) {450		return $revision;451	} elseif ( ARRAY_A === $output ) {452		/** @var non-empty-array<string, mixed> $_revision */453		$_revision = get_object_vars( $revision );454		return $_revision;455	} elseif ( ARRAY_N === $output ) {456		/** @var non-empty-array<string, mixed> $vars */457		$vars      = get_object_vars( $revision );458		$_revision = array_values( $vars );459		return $_revision;460	}461 462	return $revision;463}