Custom PHP Limits using .user.ini Print

To add custom PHP limits like memory limit, Upload limit You can do it from .user.ini file

Create a .user.ini file under your public_html and mention the code 

memory_limit=256M;
upload_max_filesize=24M;
post_max_size=32M;

You can edit the value as per your need. If you are using Wordpress you need to add the file inside the wp-admin folder too.

Regards