Max file number can php upload at same time

Question

I am using the tag for uploading multiple files with php. I notice that if i choose more than 20 files php uploads only the first 20 files.Is there a way to expand this limit?

Answer 1

This limit was added in PHP 5.2.12, to avoid a type of DOS attack: temporary files exhaustion.

Changelog of PHP 5.2.12:

Added "max_file_uploads" INI directive, which can be set to limit the number of file uploads per-request to 20 by default, to prevent possible DOS via temporary file exhaustion, identified by Bogdan Calin. (CVE-2009-4017, Ilia)

You can increase this limit by changing the max_file_uploads directive.