PHP2Shell, disclosed on 21 October 2026, lets attackers run code on vulnerable PHP servers without logging in, and it reaches all the way back to PHP 5. Small internal tools often sit on old PHP 7 servers that will never get the fix. Don't worry: we can rewrite that tool as a simple Flask app in 7 days. Find out what PHP2Shell is.
Our PHP to Flask migration services in USA and UK businesses ask for are meant for smaller apps: an order lookup tool, a booking form, a client portal with a handful of pages, or an internal dashboard someone wrote in PHP years ago. Flask is a small Python framework. A complete app can start as one file, and it grows only as far as you need.
Many old PHP tools are a set of scripts that each read a form, run a query and print a page. Flask keeps that directness. Each URL is a Python function with a route decorator, pages use Jinja templates, and you add extensions only for what you use: Flask-SQLAlchemy for the database, Flask-Login for sessions, Flask-WTF for forms with CSRF protection, and Flask-Migrate for schema changes.
We are a web development team in India with more than a decade of experience, working on hours that match the United States and the United Kingdom. You get a fixed price and a Flask app short enough that one developer can understand all of it.
Why Flask suits small PHP apps
Not every app needs a big framework. For a small tool, less code means fewer things to patch, fewer things to break and a cheaper developer to keep it running.
Small and readable
A typical small business tool fits in a few Python files. There is very little framework code to learn before you can make a change.
Add only what you use
Extensions bolt on one at a time, so a read-only dashboard does not carry user accounts, admin screens or queue systems it never touches.
Python for future scripts
Once the tool is in Python, reports, CSV imports and small automations can live in the same project instead of in loose PHP cron files.
What our Flask rewrite covers
- Each PHP page rewritten as a Flask view function with its own route
- Larger apps split into Flask blueprints by section
- HTML pages converted to Jinja templates with auto-escaping
- Database access through Flask-SQLAlchemy on your current tables
- Forms with Flask-WTF, including validation and CSRF tokens
- Login and sessions with Flask-Login, keeping existing passwords
- Database changes tracked with Flask-Migrate
- Deployment on Gunicorn behind Nginx, or on a small cloud instance
Our 7-day plan for PHP to Flask
Day 1: Walk through the tool
We go through every page and script with you, note who uses what, and confirm a fixed price.
Days 2-4: Write the Flask app
We set up Flask with its extensions, connect your database and rebuild the pages and forms in Python.
Days 5-6: Try it like your staff do
We test every form and report against the PHP version, then your team checks it on a private link.
Day 7: Switch on
We deploy Flask, point the address to it and keep the PHP tool archived in case anything needs a second look.
Small PHP tool vs Flask app
Flask keeps the simplicity of a small PHP tool and adds the safety features old scripts usually miss.
| Old PHP scripts | Flask app | |
|---|---|---|
| Routing | A separate file for each page | One decorated function per URL |
| Templates | PHP echo mixed into HTML | Jinja templates that escape output by default |
| Forms | No CSRF check in most scripts | Flask-WTF with CSRF tokens |
| Database | mysqli calls built from strings | SQLAlchemy queries with bound parameters |
| Size | Grows file by file | Starts tiny and grows with blueprints |
| Best fit | Whatever it was first written for | Small sites, portals and internal tools |
Why we are a sensible pick for Flask work
We keep Flask apps small on purpose. No extra layers, no framework added on top of the framework, just clear Python that a future developer can read in an afternoon.
Honest about size
If your app has many staff roles, lots of data screens and a growing feature list, Django will save you money over time, and we will recommend it instead.
Fixed price after the audit, agreed before work starts.
NDA signed before you send us anything.
Flask migration for small businesses in the USA and UK
This service is aimed at small and mid-sized companies in the USA and the UK that rely on a modest PHP tool and want it safe and easy to maintain. Our hours cover the US Eastern morning and the UK afternoon, and we reply on the same day.
Because our team is offshore in India, a Flask rewrite costs much less than hiring a local developer, and you still get a fixed price, an NDA and one person to talk to.
Official sources: PHP supported versions · Flask documentation
Frequently asked questions
Straight answers about our PHP to Flask Migration service.
Most small and medium PHP apps are rewritten in Flask within 7 days, audit and launch included. If the app turns out to be very large, we phase the work and make sure the first part is live within those same 7 days.
Yes, when it is set up properly. Jinja escapes output by default, Flask-WTF adds CSRF protection, and SQLAlchemy uses bound parameters. We configure secure cookies and secret keys as part of every job.
Flask for small apps and tools where simplicity matters most. Django when you need a full admin, many user roles and lots of data screens. For a pure API, FastAPI is often the better choice.
Yes. Flask-SQLAlchemy connects to MySQL, MariaDB or PostgreSQL, and we map models onto your current tables, so no data has to be moved or reshaped.
Yes, once the PHP server is retired, because PHP2Shell is a flaw inside PHP and Flask runs on Python. We keep Python and Flask on supported releases.
Yes. Small tools are exactly what this service is for. We work with businesses across the United States and United Kingdom, on overlapping hours, with an NDA and a fixed price.
Is your PHP app still on an old version?
Send us the URL or the repository. We check it for the PHP2Shell flaw and old code for free, and tell you what a 7-day migration looks like.
Get a free migration audit