Industrial automation · PHP-native

The OPC UA ecosystem, in pure PHP.

One stack — client, CLI, daemon, framework bridges, code-generated companion specs, test servers. Synchronous, single-threaded, ext-openssl only. No native bindings, no JVM, no surprises.

Get started Browse packages

$ composer require php-opcua/opcua-client

Architecture

Four layers, one stack.

The ecosystem is a thin pyramid: a pure-PHP core, three sidearms that depend on it, two framework bridges that wrap the lot, and two Docker-Compose test suites for anyone shipping an OPC UA client.

01 Test infrastructure

uanetstandard-test-suite · extra-test-suite

02 Framework integrations

laravel-opcua · symfony-opcua

03 Companion

opcua-cli · opcua-session-manager · opcua-client-nodeset

04 Core

opcua-client

PHP Opc Ua mark at the centre of eight package nodes arranged in four concentric layers

The core

Speak the protocol natively.

One library does the work — secure channels, sessions, 8 service modules, 10 security policies, 47 PSR-14 events. Synchronous, single-threaded, no native dependencies beyond ext-openssl.

OPC UA Client

opcua-client

Official

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

Security policies

PSR-14 events

Service modules

Native deps

Companion

Three sidearms.

A terminal tool, a session-persistence daemon, and pre-generated typed classes for 51 OPC Foundation companion specs. Each pulls its weight without forcing it on you.

OPC UA CLI

opcua-cli

C-01 Official

Tools Tests

The terminal companion to opcua-client. Eleven commands — browse, read, write, watch, explore, trust, endpoints, code-generation and more — every one with --json output for pipelines. Ships as a Composer dep, a PHAR, or a static binary.

Latest

v4.4.x

Open docs

OPC UA Session Manager

opcua-session-manager

C-02 Official

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

OPC UA Client Nodeset

opcua-client-nodeset

C-03 Official

Core

Pre-generated PHP classes for 51 OPC Foundation companion specifications — Robotics, Machinery, DI, AutoID, BACnet, MachineTool and more. 807 files: NodeId constants, typed enums, readonly DTOs, binary codecs, registrars. One ->loadGeneratedTypes() call and every read on a structured node returns a typed PHP object.

Latest

v4.4.x

Open docs

Framework integrations

Drop into your stack.

A facade, a service container binding, config + events + queues + log channels. Whether you live in Laravel or in Symfony, the integration looks like every other binding in your app.

Laravel Opc Ua

laravel-opcua

F-01 Official

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

Symfony Opc Ua

symfony-opcua

F-02 Official

Integrations

A Symfony bundle for OPC UA. Autowireable OpcuaManager, YAML semantic configuration with a typed TreeBuilder, Monolog channels, PSR-16 cache pools, #[AsEventListener], and a bin/console opcua:session command. Targets Symfony 6.4 LTS, 7.x, and the upcoming 8.x.

Latest

v4.3.0

Open docs

Test infrastructure

Test your client against the spec.

Two Docker-Compose suites — the OPC Foundation reference implementation, and an open62541-backed companion that fills its gaps. Use them from any language, not just PHP.

UA-.NETStandard Test Suite

uanetstandard-test-suite

T-01 Official

Tests

A Docker-Compose suite of OPC UA test servers built on the OPC Foundation UA-.NETStandard reference implementation — 10 classic servers plus a Security Key Service and a PubSub publisher. Each server exposes the same ~300-node address space, differing only in security wrapping. Use it to integration-test any OPC UA client, in any language.

Latest

v1.5.x

Open docs

Extra OPC UA Test Suite

extra-test-suite

T-02 Official

Tests

The companion suite to uanetstandard-test-suite. Open62541-backed servers that cover the corners the .NET reference does not — full NodeManagement services and a second-implementation validation against the same scenarios. Non-overlapping ports (24840+), runs alongside the main suite.

Latest

v1.2.0

Open docs

In production

Powering OPC UA in the real world.

Companies running this ecosystem against real PLCs, in real factories. Each story below is a deployment that ships every day.

Consorzio C2T

Italy Industry 4.0

Drives Industry 4.0 adoption for their member companies — php-opcua is the protocol layer behind their connected-plant projects.

Full

stack deployed

MES systems · Industry 4.0 grant projects

Stack

laravel-opcua opcua-client opcua-client-nodeset opcua-session-manager

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Egloo

Italy Software house

Drops the raw client into bespoke continuous-monitoring and notification systems — no framework wrapper, no daemon, just php-opcua talking to the plant floor.

Core

protocol layer

Continuous monitoring · alerting backends

Stack

opcua-client

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Start reading

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.

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