coral-media/ext-openblas

OpenBLAS bindings for PHP

v0.1.0 2026-03-01 13:39 UTC

Requires

• php: >=8.1

MIT

• Rafael Ernesto Espinosa Santiesteban

• linear-algebra
• blas
• openblas
• php-ext

Extension name: ext-openblas

Supports Zend Thread Safety (ZTS): ✅

Supports non-Thread Safe mode (NTS): ✅

Supported operating systems: no restrictions

Configure flags:

• --with-openblas Enable OpenBLAS support (default uses system OpenBLAS)

README

coral-media/ext-openblas is a PHP extension scaffold for OpenBLAS using system OpenBLAS libraries.

Status

• PIE metadata configured
• Build config wired for --with-openblas (system OpenBLAS) on Unix and Windows
• Initial function exposed: openblas_get_config()
• Minimal PHPT tests included

System Requirements

Unix/Linux

• PHP development toolchain: phpize, php-config, C compiler, make
• OpenBLAS development files available via pkg-config
• Typical Debian/Ubuntu packages:
  • libopenblas-dev
  • pkg-config

Windows

• Visual Studio C/C++ build tools (used by phpize/nmake flow)
• OpenBLAS headers and import library installed (for example via vcpkg)
• Runtime openblas.dll available in PATH for tests/runtime

Install (PIE)

pie install --with-openblas

Build From Source

phpize
./configure --with-openblas
make -j"$(nproc)"
make test

OpenBLAS Functions

Core

Extension metadata and runtime info.

openblas_version, openblas_get_config

Dot Products

Vector dot products in fixed and precision-dispatched variants.

openblas_sdot, openblas_ddot, openblas_dot

Euclidean Norms (L2)

Vector 2-norm functions in fixed and precision-dispatched variants.

openblas_snrm2, openblas_dnrm2, openblas_nrm2

One Norms (L1)

Vector 1-norm (sum of absolute values) functions in fixed and precision-dispatched variants.

openblas_sasum, openblas_dasum, openblas_asum

Infinity Norm Helpers (i_amax)

Index of maximum absolute value in fixed and precision-dispatched variants.

openblas_isamax, openblas_idamax, openblas_iamax