muplugins_loaded
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…
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…