README

Unicode and Base64 routines at billions of characters per second in PHP using the simdutf library.

Accelerates Unicode routines (UTF8, UTF16, UTF32) and Base64 using SSE2, AVX2, NEON, AVX-512, RISC-V Vector Extension, LoongArch64, etc.

The simdutf library is already part of Node.js, Bun, WebKit, Chromium, Cloudflare Workers, and more. Now it can be used with PHP.

Related SIMD-accelerated PHP extensions

• crc_fast PHP extension for SIMD-accelerated CRC calculations at >100GiB/s.
• simdjson_plus PHP extension for parsing gigabytes of JSON per second using the simdjson project.

Changes

See the change log.

Installing

Use Composer to install this library using PIE:

composer install awesome/simdutf

Building

Like most PHP extensions, you can also build yourself:

$ phpize
$ ./configure
$ make
$ make test
$ make install

And add the following line to your php.ini:

extension=simdutf.so

Usage

Supplies all the simdutf API functions as PHP functions in the SimdUtf namespace (e.g., simdutf::validate_utf8() becomes \SimdUtf\validate_utf8()).

See the stubs file for a complete list of functions.

References

• simdutf the simdutf library
• simdutf-rs the Rust bindings for simdutf