Prestashop store stops working after changing php version

[HenriqueDS]

Hello, I'm hoping you can help with a problem. When I try to upgrade my PHP version to 8, my store goes down, getting the error 500. Currently I have PHP 5.6. How can I do this safely and without the site going down? 

This is the message I get from the debug mode: Fatal error: Uncaught Error: Call to undefined function get_magic_quotes_gpc() in /home/boutiqu6/public_html/config/defines.inc.php:143 Stack trace: #0 /home/boutiqu6/public_html/config/config.inc.php(33): require_once() #1 /home/boutiqu6/public_html/index.php(27): require('/home/boutiqu6/...') #2 {main} thrown in /home/boutiqu6/public_html/config/defines.inc.php on line 143

What can I do. I really need to work with a recent version of PHP.

Thanks in advance!

[razaro]

Hi and welcome to the forum.

Please check this link https://devdocs.prestashop.com/1.7/basics/installation/system-requirements/#php-compatibility-chart

where you can see that PHP 8 is not yet supported. But you should be fine with 7.3 or 7.4.

[Nickz]

4 hours ago, HenriqueDS said:

When I try to upgrade my PHP version to 8,

Why did you try to update? Just for fun?

Because in the lab its a tenth of a % faster?

[HenriqueDS]

4 hours ago, razaro said:

Hi and welcome to the forum.

Please check this link https://devdocs.prestashop.com/1.7/basics/installation/system-requirements/#php-compatibility-chart

where you can see that PHP 8 is not yet supported. But you should be fine with 7.3 or 7.4.

Okay, let's say I try to change to PHP 7.4. It still makes the website go down. How can I prevent this?

[ecommerce16]

It depends on wich version prestashop you use. When your shop still goes down with the recomended php version there are other problems.

Use the recommended php version for the version of your prestashop

[DARKF3D3]

Since last stable version of Prestashop actually available it's 1.7.7, you can use PHP7.3 and not newer version.