Cannot upload large images

[Pyrhel]

Hello everyone. I need a tip or hint for my problem - when trying to upload single image, larger than 10MB or several smaller images, which global size is larger than 10MB I don't have an on-page error or something in the php log files, and the forum opens an empty "new topic" page when the size is reached. Otherwise everything works ok - I can upload large files (e.g. 8MB and the forum resizes them), many smaller files (e.g. 10 x 0.5MB), etc.
The forum is configured to limit the size of the single attachment up to 15MB, everything else is "0" - no limit. PHP is configured to accept files up to 128MB. Tried to disable the resize/re-encode features and nothing changed. There are no errors in the php log file.
Any ideas?

[Illori]

0 really is not a good limit to use, put a valid number in its place and test it out and see if it helps any.

[Pyrhel]

Tested before posting, still the same result

[Jailer]

Check with your host to see if they have a limit set in their server config.

[Chen Zhen]

Within your php.ini file memory_limit, upload_max_filesize & post_max_size should perhaps be set higher to allow larger file attachments.
Remember to only use M (no space between the amount & the M) in those settings to represent Megabytes.
https://mediatemple.net/community/products/dv/204404784/how-do-i-increase-the-php-upload-limits



Also adjust the attachment settings of your SMF admin although it may ignore them.

Check to make sure the php settings are correct after you adjust and reset the server.
http://php.net/manual/en/function.phpinfo.php

[Pyrhel]

Guys, you're great! The problem was in the post_max_size parameter of my hosting, they had it set to 8MB

[Pyrhel]

For the people, who are facing the same or similar (white screen of death) problem - if you want to upload pictures, larger than ~9MB, you'll have to edit the /Sources/Subs-Graphics.php. Find "@ini_set('memory_limit'" in it and set more memory there. I put there 256MB which is equals to my php's memory_limit.