The original developer is gone
The person who knew the hidden rules, deployment quirks and fragile areas is no longer available.
Legacy PHP / CodeIgniter takeover & maintenance
Still running a critical CodeIgniter 3 or legacy PHP system?
We take over the system, stabilize it and keep it running, without forcing a rewrite.
We work with business-critical PHP applications that are difficult to maintain, poorly documented or dependent on outdated technology.
Founder-led technical ownership
Stabilization before change
Long-term maintenance available
PHP 5.6
PHP 7.x
PHP 8.x
CodeIgniter 2 / 3
MySQL / MariaDB
jQuery
REST APIs
Legacy integrations
The problem
The system still works. The person who understood it may not.
Legacy systems usually become dangerous gradually: knowledge disappears, changes get riskier and the business becomes more dependent on software nobody wants to own.
Nobody wants to take ownership
New developers prefer modern stacks, while your existing system still needs someone willing to understand it properly.
Small changes feel dangerous
A simple feature or bug fix can break unrelated workflows because dependencies are unclear.
PHP or server upgrades are unavoidable
Your hosting environment keeps moving forward while the application stays tied to an older runtime or framework.
Security debt keeps growing
Unsupported runtimes, old libraries and outdated authentication increase operational risk over time.
The system is too important to rewrite casually
It may contain years of business logic. Replacing it from scratch could be more dangerous than stabilizing it first.
01
Core promise
You do not need to rebuild everything.
A legacy system can often be stabilized and improved gradually. We first understand what you already have, protect the critical workflows and remove the biggest risks. Then we modernize only where it creates real value.
Keep what works. Fix what is fragile. Replace only what needs replacing.
Services
Three ways we can help.
01
Legacy System Takeover
We take technical ownership of an existing PHP application when the original developer or team is no longer available.
- Codebase and environment review
- Dependency and database mapping
- Security and backup assessment
- Critical workflow documentation
02
Maintenance & Support
We keep the application stable while your business continues to operate.
- Bug fixing and small features
- Production and database support
- API and integration maintenance
- Security and performance improvements
03
Modernization & Migration
We improve the system step by step instead of forcing a risky rewrite.
- PHP and CodeIgniter upgrades
- Authentication and dependency replacement
- Server migration and modularization
- Gradual extraction of new services
Fixed-scope first step
Legacy PHP Health Check
A low-risk first step before committing to a larger takeover or modernization project.
We review the system, identify the risks and show you what should happen next - without asking you to commit to a rewrite.
Find Out What Your System NeedsYou receive:
- Risk map
- Priority fixes
- Takeover recommendation
- Modernization options
- Clear next steps
Technology
We are comfortable with the systems other teams avoid.
Our focus is not a technology checklist. It is the business logic, infrastructure and undocumented code that accumulated around the system.
Legacy PHP
PHP 5.6
PHP 7.x
PHP 8.x
CodeIgniter 2 / 3
Custom PHP
Data & Infrastructure
MySQL
MariaDB
Apache
Nginx
Linux hosting
Cron jobs
Integrations & Frontend
jQuery
Bootstrap
REST APIs
SOAP
Third-party APIs
Legacy authentication
Plus the custom libraries, integrations, cron jobs and undocumented code that accumulated around them.
Takeover process
How we take over a legacy system.
We reconstruct the technical picture, protect the business-critical paths and create a practical plan for what happens next.
01
Access & protection
Collect minimum access, verify backups and make sure the current system can be recovered.
02
Reproduce the environment
Create a controlled development environment and document what the application depends on.
03
Understand critical paths
Identify customers, orders, appointments, billing, reports and integrations that must not break.
04
Map technical risk
Find unsupported software, fragile dependencies, security issues and dangerous change areas.
05
Stabilize
Fix the highest-priority technical risks before making larger changes.
06
Build the roadmap
Show what can stay, what should be replaced and what can safely wait.
// documentation not found
?
we can still start
No documentation
We can start even when the system is messy.
You do not need complete documentation, automated tests, clean architecture, the original developer, a dependency list, a perfect database or a rewrite plan.
Messy is okay. We can still start.
We reconstruct the technical picture from the system itself.
Typical systems
We focus on software that runs real operations.
The technology may be old. The workflow is still important.
Internal business platforms
Operational tools, ERP-like systems and custom admin platforms.
CRM & customer management
Customer records, communication history, status flows and internal follow-up.
Booking & scheduling
Availability, reservations, reminders, payments and staff coordination.
E-commerce back offices
Orders, stock, fulfilment, suppliers, invoices and connected sales channels.
Reporting systems
Dashboards, exports and business-specific reporting built around operational data.
Legacy APIs & integrations
Older services that still need to exchange reliable data with newer tools.
When modernization makes sense
Modernize when the risk of keeping the system is higher than the risk of changing it.
The right path is usually incremental. We can make a system safer without pretending that every part needs to be replaced at once.
PHP 5.6→PHP 8.xCompatibility, security and hosting support
CodeIgniter 2 / 3→Maintained framework or modular PHPOnly where the business case is clear
Old jQuery screens→Modern frontend modulesGradual replacement around stable workflows
Fragile integrations→Documented APIs and servicesClear boundaries and safer monitoring
Selected work
Experience with software that carries real business logic.
Relevant experience across business workflows, mobile use, reporting, healthcare systems, subscriptions and multilingual platforms.
FieldCosts
Field service job-costing platform
A custom operational platform connecting jobs, receipts, expenses, reimbursements, invoices and reporting.
Sofia Implant Centre
Clinic management system
A centralized platform for patients, schedules, treatments, documents, communication and privacy-sensitive workflows.
Coach V Fit
Fitness, nutrition and coaching platform
A connected platform for coaches and clients covering training, nutrition, habits, mindfulness and progress tracking.
Tarotico
Multilingual subscription platform
A custom web platform with user accounts, payments, multilingual content and interactive services.
Maintenance model
Long-term support without losing control of your system.
We can work as the technical owner of the existing application while your business continues to operate normally.
Typical monthly support
- Reserved development capacity
- Bug fixes and production incidents
- Security maintenance and small features
- Integration and database work
- Release management and consultation
You keep ownership of your system, code and infrastructure.
Engagement options
Start at the level that makes sense.
Legacy PHP Health Check
A focused technical review with architecture, security, compatibility, dependency, database and infrastructure observations.
System Takeover
Environment setup, codebase understanding, documentation, stabilization, support transition and ongoing ownership.
Ongoing Maintenance
Regular technical support and continued development for systems that still run the business.
Modernization Project
Substantial technical upgrades or gradual architectural replacement without an automatic rewrite.
01
We work directly in difficult legacy codebases
CodeIgniter 2/3, custom PHP, old database structures and undocumented workflows do not scare us away.
02
We do not require a rewrite
We first understand what is stable, what is fragile and what actually needs to change.
03
We document what we discover
The system becomes less dependent on hidden knowledge as the takeover progresses.
04
We can stay after the rescue phase
Takeover can continue into maintenance, improvements and gradual modernization.
05
You deal directly with the technical owner
No sales handoff between the person who understands the problem and the person doing the work.
Why InOneWeb
A specialist for the awkward systems that still matter.
The goal is not to make old software fashionable. It is to make a business-critical system understandable, supportable and safe to change.
Beyond maintenance
Need new software around the old system?
Legacy maintenance often leads to new requirements. We also build software that can be introduced gradually without replacing the entire platform.
Internal business applications
Customer portals
Mobile applications
APIs
Dashboards
Automation
Third-party integrations
New modules
FAQ
Frequently asked questions.
Do you only work with PHP?
Legacy PHP is a core specialization, but we also work with databases, APIs, mobile applications, frontend systems and third-party integrations surrounding the PHP application.
Our code is badly documented. Is that a problem?
No. Many takeover projects begin with little or no useful documentation.
Can you work with PHP 5.6?
Yes. We can first stabilize the existing environment and then plan an appropriate upgrade path.
Do we have to migrate to Laravel?
No. Framework choice depends on the application and business case. A framework migration should never be performed just because it is fashionable.
Can you support the current system before modernization?
Yes. In many cases that is the safest approach.
Can you work under NDA?
Yes.
Final step
Your old system does not need to become an emergency.
If an important PHP application is becoming difficult to maintain, send us a short description of the situation. We will review it personally and suggest a practical next step.