Updating Docker PHP version to 8

[nepatriot]

Hey everyone,

I want to apologize ahead of time if this is an ignorant question… But I am not a relatively new developer. So I want to update the PHP version on my Docker Engine Local dev setup from 7.3.x to 8.0.x. So I did in Project Settings/Targets, redeployed and got some errors.

Then, I scrambled to get things back to normal by going back to 7.3.x, rebooting Docker Desktop, restarting the instance and we’re back which is a huge relief.

So before jumping back into these treacherous water I wanted to get advice from those more experience than me on the best approach to update PHP versions in Wappler.

[George]

There shouldn’t be any issues with PHP 8

What errors do you got?

[nepatriot]

Hey @George,

Here are my steps:
Go to: Project Settings/Targets, Docker Engine/Local
Apache, PHP, change from 7.3.x to 8.0.x
Save
Kill all services
Restart Docker Desktop
Deploy

When loading the page, I get the following error:

{“code”:0,“file”:"/var/www/html/dmxConnectLib/lib/db/Connection.php",“line”:85,“message”:“Undefined constant PDO::MYSQL_ATTR_INIT_COMMAND”,“trace”:"#0 /var/www/html/dmxConnectLib/modules/dbconnector.php(12): lib\db\Connection->__construct(Object(lib\App), Object(stdClass), ‘db’)\n#1 /var/www/html/dmxConnectLib/lib/App.php(193): modules\dbconnector->connect(Object(stdClass), ‘db’)\n#2 /var/www/html/dmxConnectLib/lib/App.php(157): lib\App->execSteps(Object(stdClass))\n#3 /var/www/html/dmxConnectLib/lib/App.php(127): lib\App->execSteps(Array)\n#4 /var/www/html/index.php(19): lib\App->exec(Object(stdClass), true)\n#5 {main}"}

Was able to restore the application to working state by changing PHP back to 7.3.x, Killing all services and redeploying.

Please let me know if you need more information.

[George]

So it is just docker targets?
and what is the MySQL version yo have chosen?

[nepatriot]

Yes.

MySQL version 8.0.x. This was not changed. It’s always been this version.

[George]

I see something is wrong with the PHP8 docker image indeed - it doesn’t install the needed pdo_mysql extension for some reason. So use for now the older PHP indeed. We will investigate.

[nepatriot]

Got it. Thanks for looking into it.

[Teodor]

This has been fixed in Wappler 3.9.4