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1. salientdigital
   Member
   Posted 7 months ago #

   I have full root access to my server. I've changed my server's php.ini as follows:
   

   memory_limit = 32M
   upload_max_filesize = 10M
   post_max_size = 12M
   file_uploads = On

   I restarted Apache.
   Still, the media library for the sites in the Multisite network all say
   

   Maximum upload file size: 439kb

   Any ideas why that could be? I don't have any php_flag directives in .htaccess so I'm at a loss to figure out how this could be.

   I did a search for ini_set in the source code and found a reference to two constants, one in admin.php on line 109:
   

   @ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', WP_MAX_MEMORY_LIMIT ) );

   and another in media.php on line 253:
   

   @ini_set( 'memory_limit', apply_filters( 'image_memory_limit', WP_MAX_MEMORY_LIMIT ) );

   Now then, in default-constants.php, WP_MAX_MEMORY_LIMIT it set to 256M, and WP_MEMORY_LIMIT is set to 64M.

   Any ideas?

2. Curtiss Grymala
   Member
   Posted 7 months ago #

   Have you changed the upload limit within your WordPress settings?

3. salientdigital
   Member
   Posted 7 months ago #

   I haven't changed any WP defaults, no. Based on almost every other post online, the main way people alter the max_upload_filesize is by hacking either php_flag in .htaccess (worst way) or custom php.ini in various folders under the WP install (also a bad way). These recommendations are things to try if you can't edit php.ini. The thing is, I've edited my php.ini so I'm at a loss to explain how WP could be getting a setting of 439kb.

   Where would I find this upload limit?

4. Ipstenu
   Half-Elf Support Rogue & Mod
   Posted 7 months ago #

   Memory != filesize

   MultiSite does have a SIZE limit for uploads.

   Go to wp-admin/network/settings.php

   Look for "Site upload space"

5. salientdigital
   Member
   Posted 7 months ago #

   Woohoo! Ipstenu, you're my hero. I had no idea that was there, and never scrolled down far enough on the Network Settings page.

   Now I get it. For anyone reading this in the future, as Ipstenu pointed out, there are two controls affecting the max upload filesize (in addition to the value in php.ini). What is reported to your WP Multisite domain's Add Media screen is actually the smallest of these three values:

   1) Your max_upload_filesize setting in php.ini;
   2) how much actual space is left over when calculating [Site upload space] - [sum total of files already uploaded]
   3) The max upload filesize value you set in wp-admin/network/settings.php

   So in my case, with the meager default settings, all that was left after subtracting all the smaller images and stuff they already upload was 439kb. I can see this being really useful, for example, in assigning 100mb of storage to each of 10 domains in a 1GB hosting plan.

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