{"id":539,"date":"2006-05-16T21:38:30","date_gmt":"2006-05-16T19:38:30","guid":{"rendered":"http:\/\/frenchfragfactory.net\/ozh\/my-projects\/wordpress-hooks-filter-flow\/"},"modified":"2007-04-21T16:10:56","modified_gmt":"2007-04-21T14:10:56","slug":"wordpress-hooks-filter-flow","status":"publish","type":"page","link":"https:\/\/planetozh.com\/blog\/my-projects\/wordpress-hooks-filter-flow\/","title":{"rendered":"WordPress Hooks & Filters Flow"},"content":{"rendered":"

Basically, a plugin for WordPress creates a PHP function (a filter<\/strong> or an action<\/strong>) which is called when a particular event (a hook<\/strong>) occurs, for example when a post is printed or when a comment is posted (for more info about hooks, filters and action, check the Codex<\/a>)<\/p>\n

When developping a new plugin, you sometimes encounter unexpected behaviors from your code, which can originate from a filter conflict : another PHP function with a higher priority was triggered before your own function, and processed the same bits you're trying to pass through your function.<\/p>\n

That's why when developping plugins, it's important to be well aware of what I call the Filter Flow : for each hook, which functions are called in which order ?<\/p>\n

So, I wrote this script : WordPress Hooks & Filters Flow<\/p>\n

List hooks and current filters<\/h2>\n

\"Wordpress The script runs in your WordPress root (or in \/wp-admin\/<\/em> if you prefer) and enumerates filters that are loaded in your blog. Hooks are displayed alphabetically, and for each hook, active filters (or actions, they're the same) are listed in their execution order, which is either defined by their priority or by their loading order. The purpose of such a list is to help hunt plugin bugs down, and let you wisely fine-tune plugin priorities if needed.<\/p>\n

Get the script<\/h2>\n