Arthur Isaev

Hi — I am Arthur Isaev. I write practical tutorials about PHP, software testing, and developer tooling — in both English and Russian. No theory for its own sake: every article starts from a real problem, shows the failing case first, and ends with a pattern you can copy into your own code.

Topics

OOP in PHP

require, include and their pitfalls

Protecting the main branch on GitHub

AI assistant

The PHP tutorials above were written together with Muse Spark 1.3 — an agentic coding model from Meta Superintelligence Labs (released September 2026), working inside the OpenCode coding agent. The workflow is the same one the articles teach: reproduce the problem first, verify every fix by running code and tests, and keep the diff reviewable.

What 1.3 brings over 1.2, per Meta: longer-horizon agentic work (builds context with tools, tracks what it learned, asks when the prompt is ambiguous), roughly 20% fewer tool calls and 25% fewer tokens on engineering tasks in Meta's internal comparisons, and a 1M-token context window. Details: Meta AI Research, developer.meta.com.

Article author: Andrei Olegovich