Blog

News & engineering notes.

Releases, deep dives and stories from the PHP OPC UA ecosystem. RSS feed

All announcement architecture fundamentals getting-started laravel protocol release reliability security sessions subscriptions tutorial

php-opcua v4.6.0 release cover — a PLC wire running through OPC UA address-space nodes into a PHP code sample calling SessionState::fromArray(), resumeSession() and connect()

Sep 17, 2026 9 min read

php-opcua v4.6.0: Self-Healing Sessions Survive Restarts

php-opcua v4.6.0 makes sessions self-healing across reconnects and process restarts, adds data-change filters, and richer subscription diagnostics.

Gianfrancesco Aurecchia release sessions

Security deep-dive cover: a wire runs from a PLC through OPC UA address-space nodes into a PHP code window configuring SecurityPolicy, SecurityMode, and certificate trust.

Jul 1, 2026 14 min read

OPC UA Security in PHP: Policies, Certificates, and Trust

Ten security policies, three trust modes, and the certificate flow between php-opcua and your PLC — from wide-open defaults to production-ready.

Gianfrancesco Aurecchia security protocol

Jun 23, 2026 10 min read

OPC UA sessions vs HTTP API calls, explained for PHP devs

Gianfrancesco Aurecchia architecture sessions

Jun 19, 2026 7 min read

OPC UA Subscriptions in Laravel: Build a Live Machine Dashboard

Build a live machine dashboard in Laravel with OPC UA subscriptions: a session-manager daemon streams PLC values into cache while Livewire keeps the UI fresh.

Gianfrancesco Aurecchia laravel tutorial

php-opcua announcement cover: a wire runs from a PLC through OPC UA address-space nodes into a PHP code window reading a temperature value.

Jun 12, 2026 4 min read

OPC UA in Pure PHP: Introducing the php-opcua Project

php-opcua brings the OPC UA binary protocol to pure PHP: client, CLI and Laravel integration, no C extensions. Read your first PLC value in minutes.

Gianfrancesco Aurecchia release getting-started