Technote
The grammar of extending WordPress — changing behaviour without touching core or the theme, and the classic ways hooks go wrong.
4 articles
Development workflow Intro
add_action and add_filter write into the same registry. Only one thing separates them: a filter must return a value, and one that forgets silently nulls the thing it…
Development workflow Intro
The same code on the same hook behaves differently depending on when it runs. Taxonomies, post types and translations all see an incomplete world before init.
Development workflow Practical
Priority is a queue position, not authority. Raising your number is a move the other side can also make, and jumping behind a translation filter sends the untranslated…
Development workflow Practical
This hook fires for every WP_Query — menus, widgets and admin list tables included. Without guards, screens you never meant to touch change quietly.