PHP2Shell is two critical flaws in PHP itself (CVSS 9.2), public and patched since October 21, 2026, with an exploit attempt recorded four days earlier. Official patched builds exist only for PHP 8.2 and newer, while 7.4, 8.0 and 8.1 got unofficial backports and anything older got nothing. An Elixir and Phoenix rebuild takes PHP out, with the first phase live in 7 days. Get the PHP2Shell facts.
PHP to Elixir migration services are for US apps that need live updates: chat, dashboards, booking screens, auctions, tracking and multiplayer features. PHP was built around one request and one response. Elixir runs on the Erlang virtual machine, the BEAM, designed for huge numbers of long-lived connections that must stay up.
The new app is built with Phoenix. Pages that change in real time use Phoenix LiveView, which pushes updates over a WebSocket while you write server code instead of a JavaScript front end. Data goes through Ecto with migrations and changesets, background work runs in Oban on PostgreSQL, and Phoenix PubSub broadcasts changes to every connected user.
Techno Mantra is an AI and web development company that builds AI applications, websites, SEO programs and custom CRM systems for businesses in the US, Canada and Australia. Elixir choices are explained without jargon.
What Elixir does better than PHP
Where many users watch the same data change, or the system must not go down, Elixir does what PHP can only do with a pile of extra services. Elsewhere it is overkill.
Real-time screens out of the box
LiveView and Phoenix Channels keep a connection open to each browser, so a new order, message or bid appears instantly without polling.
Crashes stay contained
Every task runs in its own light process watched by a supervisor. If one fails, it restarts on its own and the rest of the app carries on.
Few servers for many users
The BEAM keeps thousands of concurrent connections open on modest hardware, so hosting stays manageable as you grow.
What the Elixir migration includes
- Audit of which PHP features gain from real-time or high concurrency
- Phoenix app with LiveView for interactive pages
- Ecto schemas, changesets and migrations over your existing data
- Login with phx.gen.auth, keeping current password hashes
- Phoenix PubSub and Presence for live updates and online status
- Oban jobs replacing cron and queue scripts
- Tests with ExUnit for every ported rule
- Release build and deploy to Fly.io, AWS or your servers
The first 7 days of a PHP to Phoenix move
Day 1: Find the live parts
Reviewing the PHP app shows which screens and flows go real-time first, then you approve phase-one scope and price.
Days 2-4: Build in Phoenix
Ecto schemas on your database, then LiveView pages and contexts for each feature, with ExUnit tests written alongside.
Days 5-6: Many users at once
Load tests with simulated user crowds on staging confirm live updates arrive and data matches the PHP version.
Day 7: Launch phase one
The Phoenix part takes live users while PHP keeps serving the rest, and the next phase is planned with you.
PHP vs Elixir and Phoenix
How the two compare for apps where users expect live data.
| PHP app | Elixir with Phoenix | |
|---|---|---|
| Live updates | Polling or a separate WebSocket server | LiveView and Channels built in |
| Failures | One fatal error can stop a request chain | Supervisors restart failed processes |
| Concurrency | One worker per request | Many light BEAM processes |
| Background jobs | Cron plus custom queue code | Oban on PostgreSQL |
| Front end | PHP templates plus jQuery | Server-rendered LiveView with little JavaScript |
| Developer pool | Large | Smaller and more niche |
Why us for an Elixir rewrite
Elixir rewrites fail when PHP habits are copied across. Your app is designed around processes and messages from day one.
Honest scoping
You learn which parts of the app gain from Elixir and which do not, and if real-time is not what you need, the audit recommends a PHP 8.4 upgrade instead.
Each phase priced in writing once the audit is done.
NDA on request. Code and deploy keys stay yours.
Elixir and Phoenix migration for US companies
This service is meant for businesses in the United States that run live dashboards, marketplaces or messaging on a PHP stack that struggles to keep up. Calls are set in US Eastern hours, and messages get an answer within one business day.
One project lead runs the work from audit to each launch, and you own the code, designs and accounts the team produces.
Official sources: PHP supported versions · Elixir
Frequently asked questions
Straight answers about our PHP to Elixir Migration service.
A small app can move to Phoenix in 7 days. Elixir means a full rewrite, so a big app gets a phased plan: the first phase is live within 7 days, and later phases each get a date and price.
Not always. If real-time is one small corner of the app, a Phoenix service for that feature beside your upgraded PHP app may be enough. The audit lays out both options.
Harder than PHP: the pool is smaller, which is the main trade-off. The code is clear and well tested, and the team can support it after launch.
Yes. Ecto can work on your current tables, so both apps run side by side while features move to Phoenix step by step.
Yes. Phoenix code never touches PHP, so neither flaw can reach it. PHP code still live during a phased move is upgraded to a patched PHP 8.4 release.
Yes. Calls fit US Eastern hours, and every engagement comes with an NDA on request and a fixed price per phase.
Is your PHP app still on an old version?
Send the URL or repository, under NDA if needed. The audit checks for the PHP2Shell flaw and outdated code and shows what a 7-day migration looks like.
Request a migration audit