A PHP library that talks OPC UA binary protocol over TCP. It handles the full stack — transport, encoding, secure channels, sessions, crypto — so you can connect to any OPC UA server straight from PHP, without shelling out to C/C++ libraries.
Latest release v4.6.0 · 17 Sept 2026
2 files for Claude Code, Codex and GitHub Copilot: opcua-client, opcua-client copilot-instructions.md — 710 tokens loaded in every session.
.github/copilot-instructions.md A 710 tok .ai/skills/opcua-client/SKILL.md A 113 tok These files are php-opcua/opcua-client's own configuration — they tell Claude Code, Codex and GitHub Copilot how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.