How to Increase the PHP Upload Size

To locate your global php.ini file

 sudo vi /etc/location of php.ini 

Once you have located your global php.ini file, using your favorite editor

 sudo vi /etc/location of php.ini 

Locate and update the following lines within the global php.ini file

 post_max_size = 128M

 upload_max_filesize = 128M

After you have updated your php.ini file, you should restart php. In my example, I restarted the service php-fpm. 

In your Nginx vhost file add the following into your server block

/etc/nginx/sites-available/yoursite.com client_max_body_size 128m; 
Restart nginx safely

 nginx -s reload