Changing WordPress Max File Upload Size
I was Googling around, looking for an easier way to change the max file upload size when uploading files to the WordPress Media library and ran across this post on Brian’s Tips and Tricks for Web Developers website.
You can easily change PHP values by going to the Select PHP Options page under Select PHP version in the Software section of cPanel. When you’re on the Select PHP version page, choose Switch to PHP Options at the top right.
Click on the value, make a selection, Apply and Save.