How to use it
Look up one error. Scan the whole package.
Joomla documentation tells you the framework moved. This page tells you what to type instead, which hop kills it, and when Infyways should take the rewrite.
Describe the break
Paste the fatal, or type what failed: template, plugin, SQL, jQuery.
Read the hop
Joomla 3→4 is the cliff (JRequest, MooTools). Joomla 5→6 is aliases dying.
Apply the replacement
Copy the new API. If there is no 1:1 swap, the entry says so.
Scan the rest
Run the Migration Scanner on the ZIP so you are not grepping one class at a time.
Why Infyways
Built for people who have to fix it today
Core docs explain the framework. This reference maps the break to a replacement and a hop. If the rewrite is the job, Infyways already does Joomla 3 → 6 migrations.
Talk to an upgrade developerSearch in your words
Error dumps, class names, or “white screen after I turned off the compatibility plugin.” Instant, on-device filtering.
What you will see
Each issue lists the PHP/JS message, J3 vs J4 vs J6 status, and whether the BC plugin papers over it.
Before and after
Copy the Joomla 3 snippet and the namespaced replacement. Numbered steps — not a link into another manual page.
Then scan the ZIP
One error is a lookup. A whole LMS is a scan. Same Infyways migration path if you cannot finish it.
FAQ
How this reference works
Joomla’s own notes are written for core contributors. This page is written for the person staring at a white screen. Search in English, get the replacement, then scan the ZIP if you still cannot see every hit.
Answer
Can I paste a PHP error?
Yes. Paste Class "JFactory" not found, undefined function jimport, Incorrect DATETIME value, or $ is not defined. The search matches error text, class names, methods, templates, SQL, and symptoms like white screen or row-fluid.
Get in touch
Have a project in mind? Let's talk about it.
Tell us what you're building. Whether it's a new site, an online store, a mobile app, or something that needs AI under the hood, we'll get back to you within a business day.
Prefer a direct conversation?
Request a project quoteTell us about your project
Fill out the quick form and we'll reach out.