尽管检查，路径名是正确的，但创建zip和zip-> close（）会返回false

Question

I've been trying to create a Zip file using PHP and the ZipArchive, but despite checking that each file I add is readable, writable, and exists, zip->close() returns false. If I call zip->numFiles, it returns the number I suspect, but file_exists($zipname) still returns false. Immediately after adding a file, $zip->getStatusString() returns "No Error". If I call $zip->getStatusString() right after calling zip->close() it returns "Failure to create temporary file: Permission denied".

I've checked this link Zip->close() returns false despite checks, and have ensured that the $file I'm making checks for is the exact same as the $file I'm adding to the $zip.

Is there something I'm overlooking?

Answer 1

From the comments, so this question does have an answer:

Whilst the files might be readable and writable, the location the zip archive is being written to also needs to be writable by the web server.

The number of files in the zip archive count are being counted because the zip stream is in memory at that stage, and not on disk.