413: Request entity too large apache php mysql

Question

I have been getting this 413 response when trying to upload an ~20MB zip file with a home grown (but not by me) document library resource developed in PHP running on an Apache server with a MySQL database connected. Normally the max file size is limited to 5.2MB in a local PHP variable. So the first thing I did was to increase this value and try to upload the file. That's the first time I encountered this error.

I tried everything mentioned here: Request Entity Too Large

And even changed the mod_security config settings mentioned in the bottom of that post. Even with all the limits I found raised far above what I should need -- up to ~120MB, I still get this error.

Answer 1

So after posting this, I found another mod_security limit that needed to be raised appropriately.

SecRequestBodyLimit was too low (131072).

This is probably a corner case, but hope it helps someone else.

Answer 2

This worked fine for me maybe this helps you to upload larger files:
Change these values in php.ini:

upload_max_filesize 3000M
post_max_size 3000M
max_execution_time 3600
max_input_time 3600

Answer 3

Do you increase LimitRequestBody in your apache config? Link to LimitRequestBody in Apache Documentation

Answer 4

None of the listed fixed my problem. They were all set much higher than needed. I was posting 100k-500k textarea fields. What did fix it for me was adding the following to the <form> tag.

enctype="multipart/form-data"