TypePHP is a native AOT compiler that translates PHP source code into optimized machine code ahead of time, producing native executables, PHP extensions, and shared libraries while preserving PHP syntax.
TypePHP solves the performance limitations of interpreted PHP by compiling source code to native binaries rather than relying on bytecode interpretation or virtual machines. It translates PHP into C++ and then into native machine code, enabling the compiler to emit fast, statically-typed code for performance-critical paths. The tool maintains compatibility with PHP's dynamic features through PHPX interoperability with the Zend runtime, allowing dynamic values, internal functions, reflection, and object metadata to continue working alongside compiled user functions. A two-phase compilation design—prepare and convert—ensures deterministic builds across multi-file projects and self-hosted scenarios by deferring constant and declaration lowering until all project symbols are known.
Developers considering TypePHP should understand that it intentionally supports a defined subset of PHP rather than claiming drop-in compatibility with all existing PHP programs. The project maintains an explicit list of incompatible PHP features that users must review before adopting it for existing applications. TypePHP suits projects where native performance is a priority and where the codebase can be adapted to work within the supported feature set. The tool's self-hosting nature—where the compiler binary itself is built by compiling TypePHP's own PHP source code—demonstrates the viability of the approach but also indicates that users should expect the project to be under active development with evolving capabilities.
The project shows sustained engineering effort focused on correctness and determinism in the compilation pipeline. Development activity demonstrates attention to the multi-file build process and the self-hosting bootstrap chain, with deliberate design choices around symbol resolution and constant evaluation. The maintainers have invested in comprehensive documentation of incompatible features and compatibility constraints rather than obscuring limitations.
