Updated on August 6, 2019
WordPress Maximum Upload Size
Another weird issue I’d been running into for ages was WordPress’s maximum file upload size. It had been defaulting to 2MB for as long as I can remember, and none of the instructions I could find online were helping.
People were recommending I edit the .htaccess file or add some lines to wp-config.php, but even with those changes I was hitting the same issue: it was locked at 2MB.
I finally thought to check the php.ini (located for posterity at /etc/php/7.0/apache2/php.ini), searched for a line containing 2M and found this little gem:
Upped it to 64M, reloaded Apache, and everything magically began to fall into place.