: You need all other numbered parts of the archive (e.g., PHP.7z.001 , PHP.7z.002 , etc.) in the same folder.

: PHP's ZipArchive class is for .zip files and does not natively support the .7z format.

: The most common way to handle .7z files in PHP is to use the exec() or passthru() functions to call a 7-Zip binary installed on the server (like 7za or 7zzs ).

: A popular free tool for Mac users to handle multi-part archives. WinZip : Also supports extracting .7z files. Usage in PHP (Programming)

: Always open or extract only the file ending in .001 . Modern extraction tools will automatically detect and join the subsequent parts like .003 to reconstruct the full data. Recommended Tools :

If you are trying to handle this file within a PHP script, note the following:

: To extract a multi-volume archive via command line, you only point the command at the first file (the .001 file), and the utility handles the rest.