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Example code of php-io-extensions/cuda

Informations about the package cuda

php-cuda

PHP CUDA Built with Zephir

PHP extension for the CUDA Runtime API plus CUDA–OpenGL interop — built with Zephir, installable via PHP PIE.

cuda exposes CUDA Runtime device, memory, stream, and event APIs to PHP 8.2+ as namespaced static methods under Cuda\Cuda\Cuda, plus thin data objects (CudaDevicePtr, CudaHostPtr, CudaStream, CudaEvent, CudaGraphicsResource) that store opaque native pointers in public fd.

Cuda\Cuda\CudaGL adds in-package CUDA–GL interop (PBO/texture register/map), an embedded plasma PTX kernel (no nvcc for consumers), and minimal present helpers. Windowing stays in peer extensions (sdl3 / glfw).

This is not CudaGraphics-PHP (custom draw/particle kernels). Token constants (cudaSuccess, memcpy kinds, …) belong in a companion microscrap package, not in this extension.

Requirements

Component Minimum version Notes
PHP 8.2 ZTS and NTS builds both supported.
CUDA Toolkit 12.0+ Runtime + Driver + cuda_gl_interop.h (Jetson CUDA 13.2 OK).
OpenGL desktop GL Linked as -lGL for interop/present.
OS Linux / Jetson aarch64 + x86_64 Linux. Darwin/Windows not supported.
Compiler C11 toolchain gcc or clang.
php-dev / phpize matches PHP Required for any build path that is not PIE.
nvcc maintainers only Regenerating embedded PTX — not required for PIE installs.

Installation

Via PHP PIE (recommended)

PIE builds the committed ext/ tree with --enable-cuda. No Zephir. No nvcc.

Platform installer (Jetson / JetPack)

Manual build with Zephir (maintainers)

Verifying the install

Quick start

Examples

API surface

Class Namespace Role
Cuda Cuda\Cuda Static Runtime API (device, error, memory, stream, event)
CudaGL Cuda\Cuda CUDA–GL interop, embedded plasma launch, present helpers
CudaDevicePtr Cuda\Cuda Device allocation DTO (fd, size)
CudaHostPtr Cuda\Cuda Pinned host allocation DTO (fd, size)
CudaStream Cuda\Cuda Stream DTO (fd, flags)
CudaEvent Cuda\Cuda Event DTO (fd, flags)
CudaGraphicsResource Cuda\Cuda Interop resource DTO (fd, glBuffer, size)

fd === 0 means none / freed. Callers own allocations until cudaFree / cudaFreeHost / cudaStreamDestroy / cudaEventDestroy / CudaGL::unregister. Do not cudaFree a device pointer obtained from CudaGL::map.

IDE stubs: ide/0.7.4/Cuda/.

License

MIT © Project Saturn Studios, LLC.

All versions of cuda with dependencies

PHP Build Version
Package Version
Requires php Version >=8.2
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