Having trouble changing your WordPress file size upload limit on a (mt) MediaTemple DV 4.0 with multiple sites? I was consistently stuck at the 1MB upload limit and tried everything I could find on the net from .htaccess changes, to wp-config.php edits, to uploading a php.ini file to wp-admin. Unfortunately none of these will work for a (mt) MediaTemple DV 4.0 with vhosts. The fix actually does require a php.ini edit but finding it is the trick.

To get around this issue here is what you can do.

1. SSH into your server
2. Type at the command prompt:

   nano /var/www/vhosts/yourdomain.com/etc/php.ini

3. In this php.ini file for the particular vhost find

   post_max_size = xM 

   &

   upload_max_filesize = xM

4. If either of above parameters are not there, add to the php.ini file.
5. 10M means 10mb upload limit so what I did was change both to 10M

   post_max_size = 10M 

   upload_max_filesize = 10M

6. Save and exit the file by pressing CTRL – X, typing Y (to overwrite changes), and hit enter.
7. Restart your server@ the command line by typing:

   /etc/init.d/httpd restart

8. Now you should see your upload limit change in WordPress.

If you are getting a blank php.ini file when trying the above, try adding this line of code into a WordPress template to find out what location your site is pulling its php.ini preferences from:

<?php phpinfo(); ?>

* Please keep in mind that not all servers have the same software versions and therefore setting PHP values can be different.