You can set many custom php options, like:
- upload_max_filesize
- memory_limit
- post_max_size
- max_execution_time
...and many more in your web site control panel.
Step-by-step guide
Just enter your cPanel and follow these steps:
- Select PHP Version
- Chose necessary PHP version, it shouldn't be signed as "native".
- Click on "Select PHP Options".
- Set necessary options and click "Save"