PHP upload size and its impact on post size and memory limit

php file-upload memory-limit
World picture World · Jun 21, 2011 · Viewed 7.6k times · Source

My PHP web application requires files (about 2.5 to 3 GB in size) to be uploaded to the server. How will this impact on following directives ?

what are the required values in my case?

  • post_max_size
  • upload_max_filesize
  • memory_limit

Your help will greatly be appreciated.

Answer

Shef picture Shef · Jun 21, 2011

  1. post_max_size should be 3G

  2. upload_max_filesize should be 3G

  3. memory_limit depends!!! what you are going to do with the file. If you are going to manipulate the file or do other memory intensive jobs, then you will need to set a high limit. If you don't want to put a maximum limit, you can always set it to -1. This value doesn't have to do much with the size of the file, but rather with the size of the physical memory your script needs to handle the job.

For the first two, it is the maximum file size you expect to be uploaded, suffixed with a short hand byte value. For KB should be K, MB should be M, GB should be G, ...

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