Everything that touches post output hangs off the same filter — autoembeds, wpautop, shortcode expansion, and every plugin. Priority decides the order, and getting it wrong is why…
Three installs, three plugin sets, one person patching them — a security release forgotten on the third site for six weeks. The import order, and what a shared…
save_post fires for autosaves, revisions, quick edit, bulk edit and XML-RPC as well as for someone pressing Update. None of those requests contain the fields from your meta…
A new custom post type has a working single view and an archive that 404s, and it starts working the moment somebody opens Settings → Permalinks. The rewrite…
WordPress 3.5 replaced the uploader with a Backbone application, and the hook every custom meta box was built on went with it. The old pattern opened ThickBox and…