Adx Plugin.
A production WordPress ad-management plugin that lets publishers monetize with Google AdX / Ad Manager — precise, programmatic ad placement across 10+ formats (popup, rewarded, interstitial, sticky, in-content) with zero-code configuration.
Architecture & Key Decisions
- Multi-layered hook system (render_block, loop_start, the_content, output-buffering fallback) with global duplicate-prevention flags — for broad theme compatibility.
- Content parsing engine: regex-based position calculation for pixel-perfect ad insertion before/after the Nth paragraph or image, with sub-10ms processing overhead.
- Async ad loading with conditional script enqueuing and dependency management.
- WordPress rewrite-rule system for ads.txt management — publishers manage authorized sellers from the admin panel without FTP access.
- Security-first: wp_kses sanitization, output escaping, and capability-based access control — WordPress.org repository compliance under GPLv2.
Why It Matters
Shipped, reviewed, and running in a hostile environment
This is publicly shipped, third-party-reviewed code — the WordPress.org approval process includes a security review. Building an ad plugin that inserts markup reliably across a huge range of themes, without breaking layouts or violating strict security standards, is a genuinely hard constraint environment. It's verifiable proof of work anyone can inspect.
Trade-offs & What v2 Adds
Why output buffering only as a last-resort fallback?
Balancing WordPress.org compliance against maximum theme compatibility.
Why global flags over transients/cache?
Avoiding DB overhead for simple duplicate prevention.
What v2 would add
A/B testing for placements, a fill-rate/revenue analytics dashboard, a React admin UI, and REST endpoints for programmatic slot management.
Want the full walkthrough?
Happy to walk through the hook system, the content-parsing engine, and the security-compliance work.