Upgrading to PHP 7 - What Are Potential Issues?

jazee

• September 30, 2019 17:28

Wondering for those that were running on PHP 5.6 what, if any, issues did you run into upgrading to PHP 7?

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  quietFinn

  • September 30, 2019 22:45

  It totally depends on what you are running in your website(s). For example if you have WordPress (latest version) you will not have any issues. But then again, even if you have the latest WordPress you may have WP extensions that do not like PHP7.x.

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  jazee

  • September 30, 2019 22:54

  Yes, aware of the potential WP plugin issues but less worried related to other stuff since PHP 7 has been out a long time and I use minimal plugins and they are pretty major (not obscure) ones. So ya, that's why I asked as I figure by polling other users I can get a feel for how common the issues are (non Wordpress) and what they are. Just to be safe, I'll probably spin up a separate server with separate Cpanel license, transfer the accounts in question, override the DNS by editng my LMHOSTS file temporarily to point the domains to the test server and test that way after doing a test upgrade. Still, would be nice to get an idea what I'm probably in for.

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  Jcats

  • September 30, 2019 23:09

  You could also just take advantage of MultiPHP Manager or if on CloudLinux "Select PHP Version". This instantly changes the PHP version so you could upgrade the account to 7, test it out, if any issues arise, just downgrade back to 5.

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  kdean

  • October 03, 2019 00:00

  Wordpress plugins were mentioned but also take into consideration your theme as well. If it hasn't been updated in a while it may have some issues. For the most part 5.6 to 7.0 didn't present a lot of issues for me as long as plugins/theme were up-to-date. In case you're running a legacy version of wordpress (sometimes it happens if there's un-updated theme incompatibilities), PHP 7.1+ requires Wordpress 4.7 or later. Although it's best to go to at least 7.2 or 7.3 if possible. There's some known issues that aren't immediately obvious with PHP 7.1 that I can't for the life of me recall at the moment. 7.1 only has security support through December so another reason to skip over 7.0/1.

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  cPanelLauren

  • October 04, 2019 19:40

  Thanks everyone for the input on this one, @jazee let us know if you're still unsure or have any further questions.

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