Service
Legacy PHP Upgrade & Migration
Old PHP that still works is the hardest kind to leave and the most expensive kind to keep.
PHP 5.x to 8.5 · Composer · Laravel
4-step process
- 4 clear stagesCode review to Launch & watch
- PHP 5.x to 8.5, Composerand 6 more in the stack
- 6 kinds of worklisted below
- Written estimatefixed price, before work starts
What this is
PHP2Shell brought a problem into the open. Versions at the end of their support life don't get official fixes, so the next critical bug lands without a patch. Many Indian businesses run applications on PHP 5, 7 or early 8, because the application works and nobody wants to touch it. We upgrade these in steps: read the code, find what breaks on the target version, fix it on a staging copy, test the screens people actually use, and cut over with a way back.
Who this is for
- Businesses on PHP 7.x or 8.0 and 8.1 who have been told to "upgrade someday"
- Owners of applications built years ago by a developer who has since moved on
- Companies whose host has announced it is dropping old PHP versions
- PHP 8.2 users who want to move before it reaches end of life on 31 December 2026
What problem this solves
If two or more of these sound familiar, it is worth a conversation.
No official security fixes
Once a branch is unsupported, new vulnerabilities go unpatched unless a vendor backports them. A backport is a bridge, not a plan.
Fear of breaking a working system
The reason it hasn't been upgraded is usually a good one. We test on a copy and prove it works before touching live.
Libraries that stopped working
Old Composer packages and plugins don't run on new PHP. We replace them or patch around them.
Hosting limits
Some hosts refuse old versions, others charge extra for them. Moving to a supported version often fixes this at the same time.
What Nimbryx actually builds
Every one of these is built around how your team already works.
Compatibility audit
Automated and manual checks for removed functions, changed behaviour and incompatible packages between your version and the target.
Stepwise upgrade
Intermediate versions where the gap is large, with tests at each step instead of one risky jump.
Code and dependency fixes
Deprecated calls rewritten, abandoned libraries replaced, and type and error handling cleaned up where it caused failures.
Staging environment
A copy of the application and data on the new version for you and your team to test before launch.
Cutover & rollback plan
A scheduled switch, a checklist for the first day and a ready way back if something unexpected shows up.
Documentation
What changed and why, written so the next developer isn't guessing.
How this typically works
From the first conversation to a working system.
Step 1
Code review
We read the application and give an honest verdict: upgrade, partly rebuild, or replace. Sometimes the answer is that a rebuild is cheaper.
Step 2
Quote
Fixed scope and price in writing. If we find more problems mid-way, we tell you before spending your money.
Step 3
Upgrade on staging
Work done on a copy, with regular check-ins so you see progress.
Step 4
Launch & watch
Cutover in a quiet window, then close monitoring through the first days.
The stack we’d likely use
Mature, well-supported tools. The final choice depends on your project, and we explain it before we start.
- PHP 5.x to 8.5
- Composer
- Laravel
- CodeIgniter
- WordPress
- MySQL
- Docker
- PHPUnit
An honest note
When this isn't the right call
If the application is small, badly structured and nobody loves it, upgrading it can cost more than rebuilding it cleanly. We'll say so after the code review, and show you both numbers, instead of pushing the upgrade because it's the work in front of us.
Not sure which side of the line you’re on? Ask us and we’ll say so.
Can PHP 5 or 7 be upgraded directly to 8.4?
Sometimes, but stepping through intermediate versions is safer for large codebases. We decide after the audit.
Will my WordPress site break on a newer PHP?
Core usually runs fine. Old plugins and themes are the usual cause of trouble. We test them on staging and replace whatever fails.
How long does an upgrade take?
A small application can be done in a few days. A large one with many dependencies takes weeks. The code review gives a realistic estimate.
Do I keep ownership of the code?
Yes. The repository, configuration and documentation are yours. There's no licence or lock-in attached to our work.
Ready to talk about your project?
Tell us what you're trying to build. We'll reply within one business day with honest thoughts, not a sales pitch.
- First conversation is free
- Written estimate before anything starts
- You own the code