Documentation

Find what you need.

Quick-start in three minutes, or jump straight to the full package list. Every package is versioned per release; the version selector lives in the docs right-rail.

Quick start

Three minutes to a session.

Install the client, point it at an OPC UA server, read a node. Everything else is a refinement of these three calls.

bash install

composer require php-opcua/opcua-client

PHP examples/first-read.php

use PhpOpcua\Client\ClientBuilder;

$client = ClientBuilder::create()
    ->connect('opc.tcp://localhost:4840');

$value = $client->read('ns=2;s=Temperature');

How it's organized

Package · version · page.

The hub is a thin index over many independent repositories. Every package picks its own release cadence, and every release ships its own docs tree.

Packages

Each package is one composer-installable library. Find them on the packages page; the docs sidebar shows source provenance, type, GitHub stats and the latest release.

Versions

Each package keeps a master branch tracking trunk plus tagged releases like v4.3.x. The version selector lives in the docs right rail.

Pages

Inside a version, docs are CommonMark with a small set of DMD directives for callouts, code blocks, tabs and steps. The CHANGELOG ships with each tag.

Featured

Start here.

Three packages most readers want first.

See all packages

OPC UA Client

opcua-client

First-party

Core

The foundation: a pure-PHP OPC UA client. Speaks the binary protocol over TCP, manages secure channels and sessions, ships the cryptography (10 security policies, RSA + experimental ECC) and emits 47 PSR-14 events at every lifecycle point. Synchronous, single-threaded, zero native dependencies beyond ext-openssl.

Latest

v4.4.x

Open docs

OPC UA Session Manager

opcua-session-manager

First-party

Core

A long-running ReactPHP daemon that holds OPC UA sessions on behalf of short-lived PHP processes. Drop in ManagedClient for OpcUaClientInterface and your Laravel / Symfony / plain-PHP app reads, writes, and subscribes through a session that survives the request. Local IPC over Unix socket or TCP loopback.

Latest

v4.4.x

Open docs

Laravel Opc Ua

laravel-opcua

First-party

Integrations

OPC UA wired into Laravel with the idioms you already use — a service provider, the Opcua facade, config/opcua.php, log channels, cache stores, an Artisan command for the session-manager daemon. Switches transparently between the direct client and the daemon-backed managed client.

Latest

v4.4.x

Open docs