OpenCart Community

I’m looking for a specialist who can upgrade my shop from version 3.x to 4.x. Can you recommend someone?

It is not recommended to upgrade to any OC4 version.
Use Opencart 3.0.4.1 which can be found https://www.opencart.com/index.php?rout ... ad/history
A new OC3 version is on the way that also will support php8.4. It might also be worth while waiting for that.

No one will recommend someone here they will just advertise themselves.
Nevertheless, you should add any theme / extensions you have.

If you use Opencart default and have few extensions you should be able to upgrade to php8 (by upgrading to OC3.0.4.1) reasonably easily - even yourself.

I read that version 4.x is supposed to be more secure. I currently have version 3.0.3.9. My main concern is actually security.

php8 is more secure and it is also faster
Opencart 3.0.4.0 / 3.0.4.1 are both stable and secure
The new Opencart 3 version will support php8.4 - the other two only up to php8.3
The importance security issues are all in 3.0.4.0 upwards

Opencart 4 is still not suitable for production sites.

PHP-Version: 8.3.10 is running

by mona wrote: ↑

Sat Jun 28, 2025 9:29 pm

A new OC3 version is on the way that also will support php8.4. It might also be worth while waiting for that.

v.3.0.4.1 works well with php 8.4.8

@OSWorX I have it working well also - and for clients that have many sites to upgrade I can keep 7.4 to 8.4 until they are all upgraded, it required a few depreciation fixes, but nothing major. So far I have not had any major issues with extensions either.

Updated right now MariaDB (MySQL) to 11.8.2 and having no troubles ..

So, using OpenCart 3.0.4.1 with php 8.4.8 and MariaDB 11.8.2 (from all the latest official releases) and the shops are "running smoothly the highways along .."

Note: with OpenCart 3.0.4.1 sometimes minor "warnings" could happen (for example when a template .twig has troubles the twig engine will say some "deprecated .. etc. ").
The developers are behind this "issue" and I guess they will release in a few days something called OpenCart 3.0.5.0 which has updated libraries to fix also those messages.

In the meantime "disabling error messages" should be checked in the shop config.

I chose to fix them but really much of a muchness but I do agree that there is something slick about it.

I already know your suggestions, But by the way.

If I want to convert existing MySQL data to 4.1.0.3's data table structure, what should I do?

Edit keywords directly using a text editor, First import the MySQL table structure into the new database, Finally, will the data be imported into this new structure and restored?

Search Change to
Search Change to Is it like this?

OSWorX wrote: ↑

Sun Jun 29, 2025 11:20 pm

Note: with OpenCart 3.0.4.1 sometimes minor "warnings" could happen (for example when a template .twig has troubles the twig engine will say some "deprecated .. etc. ").
The developers are behind this "issue" and I guess they will release in a few days something called OpenCart 3.0.5.0 which has updated libraries to fix also those messages.

In the meantime "disabling error messages" should be checked in the shop config.

I think there's coming some movement into the PHP 8.4 fixes for the upcoming OpenCart 3.0.5.0, the author of cardinity released a new version of this payment extension, and it could replace the old one. I am currently testing it all.