wp_zip_file_is_valid( string $file ): bool

1571function wp_zip_file_is_valid( $file ) {1572	/** This filter is documented in wp-admin/includes/file.php */1573	if ( class_exists( 'ZipArchive', false ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) {1574		$archive          = new ZipArchive();1575		$archive_is_valid = $archive->open( $file, ZipArchive::CHECKCONS );1576		if ( true === $archive_is_valid ) {1577			$archive->close();1578			return true;1579		}1580	}1581 1582	// Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file.1583	require_once ABSPATH . 'wp-admin/includes/class-pclzip.php';1584 1585	$archive          = new PclZip( $file );1586	$archive_is_valid = is_array( $archive->properties() );1587 1588	return $archive_is_valid;1589}