PHP2Shell, two critical PHP engine flaws (CVSS 9.2), went public on October 21, 2026, and an exploit attempt was recorded four days before the fix. Official fixes cover only PHP 8.2 and newer, and apps on 8.1 or older get none. On ASP.NET Core the app runs without PHP, and most small and mid-sized apps move in 7 days. Read the full news story.
PHP to .NET migration services suit US businesses that have standardized on Microsoft. Staff sign in with Microsoft 365, data lives in SQL Server or Azure, and one PHP app on a Linux box is the odd one out that nobody in IT wants to own. Moving it to .NET puts it on the stack your team already runs.
The app is rebuilt in C# on ASP.NET Core, on a current long-term support release of .NET. Pages become Razor Pages or MVC views, or the back end becomes a Web API for an existing front end. Data moves through Entity Framework Core with code-first migrations, and employees log in with Microsoft Entra ID through standard OpenID Connect middleware.
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Why Microsoft shops move PHP apps to .NET
ASP.NET Core is open source and cross-platform, and each long-term support release gets three years of fixes. For a company already paying for Microsoft, it also leaves IT with one fewer platform.
Single sign-on with Entra ID
Staff use the Microsoft account they already have. When IT disables a leaver, access ends at once, with no separate PHP user list to forget.
One stack for IT to support
C#, Visual Studio, SQL Server and Azure DevOps are tools your team knows, so patching, backups and audits follow one process.
Strong typing and tooling
C# flags type mistakes at build time, and Visual Studio or Rider rename and restructure code across the project.
What moves to .NET
- PHP pages rebuilt as Razor Pages, MVC views or a Web API
- Database mapped to Entity Framework Core, MySQL data moved to SQL Server if you choose
- Staff login through Microsoft Entra ID, customer login through ASP.NET Core Identity
- Existing password hashes verified on first login and upgraded in place
- Scheduled PHP scripts turned into hosted background services or Azure Functions
- Reports, PDFs and Excel exports
- xUnit tests covering your business rules
- Deployment to Azure App Service, IIS or Linux containers
Your 7-day PHP to ASP.NET Core schedule
Day 1: Inventory
The audit lists every PHP page, form, table, job and sign-in method. You then approve scope and price.
Days 2-4: Build in C#
ASP.NET Core project, EF Core models and migrations, then each module ported with its rules and validation.
Days 5-6: User testing
Staff try the .NET version on a staging slot with Microsoft logins while data and reports are checked against PHP.
Day 7: Go live on your stack
Staging swaps into production on Azure or IIS, URLs stay where possible, and monitoring follows launch.
PHP app vs ASP.NET Core app
What your IT team runs before and after the move.
| PHP app | ASP.NET Core app | |
|---|---|---|
| Sign-in | Separate username and password list | Microsoft Entra ID single sign-on |
| Language | Untyped legacy PHP | C# with full type checking |
| Database | MySQL with raw queries | EF Core on SQL Server, Azure SQL or MySQL |
| Hosting | A Linux server IT does not manage | Azure App Service, IIS or containers |
| Support | Old release, no official fix | Microsoft support policy with LTS releases |
| Tooling | Basic editor | Visual Studio, Rider and Azure DevOps |
Why pick us for PHP to .NET
This move takes fluency in PHP and C#, the mix the team brings.
No surprises for your staff
Screens, fields and reports stay where people expect them, so for most people the switch to .NET feels like a change of login.
Fixed price set after the audit, and it holds through delivery.
NDA before access, and all code delivered to your own repo.
PHP to .NET for US businesses
This service is for firms in the United States that run on Microsoft 365 and Azure but still carry a PHP intranet, portal or line-of-business tool. Call times overlap the US Eastern day, and every inquiry gets a reply within one business day.
The team's record runs to 5,000+ projects for 3,460+ clients. You get one contact for the whole move, an NDA on request and ownership of all code and accounts.
Official sources: PHP supported versions · .NET (Microsoft)
Frequently asked questions
Straight answers about our PHP to .NET Migration service.
Most small and mid-sized PHP apps move to ASP.NET Core in 7 days. Large systems get a phased plan, and the first part goes live within the same 7 days.
No. Modern .NET runs on Linux as well. Hosting can be Linux containers, IIS, Azure App Service or your current cloud, whichever your IT team prefers.
Yes. EF Core works with MySQL through a provider. Many clients switch to SQL Server or Azure SQL during the move, but that is your call.
Possibly not. For a team that lives on Linux and open-source tools, Laravel, Node.js or a PHP 8.4 upgrade can fit better. The audit says so plainly.
Yes. Once live, the app runs on .NET with no PHP engine, so PHP2Shell does not apply. PHP is also removed from the old server after launch.
Yes. The team works remotely across the US, signs your NDA on request and runs each project at a fixed price with one project lead.
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