Recommended Books
Essential resources for deep learning architecture, design patterns, and professional development. Curated collection of must-read books for WordPress developers.
Architecture
PHP
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Agile
Performance
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A Hook That Fires Twice – and How Not to Trigger an Infinite Loop When Saving a Post
Why This Is Dangerous This isn’t some edge case — it’s one of the most common reasons a “simple” post save suddenly hangs the admin. The problem is compounded by the fact that the same hook often carries logic from several plugins at once: an SEO plugin, a caching plugin, your own custom code —…
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Enqueue Hooks: Four Hooks, Four Different Zones — and How Not to Mix Them Up
On the surface, these five hooks all do the same thing — load CSS/JS. But four of them sound almost identical while each one runs in a different zone of the site. Mix them up, and block styles leak onto the front end where nobody asked for them, or the Gutenberg editor is left with…
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The Window of Opportunity: When Each WordPress Bootstrap Hook Is Open, and When It’s Already Closed
Both examples are correct code in the wrong hook. Why This Is Dangerous This isn’t always a reproducible bug. Whether it fires or not often depends on plugin load order, theme version, or whether object caching is active. The classic situation: “works on my local,” but on the client’s production it silently doesn’t — with…
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SOLID in the WordPress Ecosystem: What 4wp.dev’s Plugins Actually Prove
WordPress makes it easy to write code that works and easy to write code that lasts, and those are not the same skill. Hooks, filters, custom post types, widgets — the platform hands you enough rope to build something maintainable or something that collapses the moment a second developer touches it. SOLID is the discipline…
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muplugins_loaded: The Hook That Actually Fires First in WordPress Slug: muplugins-loaded-the-real-first-hook
Quick interview trap: which WordPress hook fires first? Ask ten WordPress developers “which hook runs first?” and nine will say init. The sharper ones say plugins_loaded. Almost nobody says muplugins_loaded — and that’s exactly why interviewers who know their stuff love asking it. muplugins_loaded fires the instant WordPress finishes loading must-use plugins (and, on multisite, network-activated plugins)…
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4WP Smart Link: How a Common Client Request Became a Scalable Open-Source WordPress Plugin
Let’s use a real case — a routine client request to make a Cover block’s photo clickable in FSE Gutenberg — to walk through what client-centricity, thoughtful design, and scalability actually look like in WordPress development. Let’s dive into WordPress development — domain first, integration second. There can be plenty of ideas for a new…
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4WP-Booking: How One Dental Clinic’s Request Became a Domain-Driven WordPress Booking Platform
Most WordPress booking plugins start the same way: a client needs to connect their site to a specific tool, so a developer wires up that one API and ships it. It works — until the second client shows up with a different calendar system, and the “quick integration” has to be rebuilt from scratch.