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So you have your code in a class, let's say it looks like this... <?php class WPSE82245 { public function action_init() { // do stuff } } Now you try to hook it into something.. …

bloginfo('stylesheet_url') will always return the current theme's stylesheet. If current theme is a child theme, for example, it will return style.css relative to the child theme's root rather than th …

Probably because a thing like a favicon is not necessarily tied to the on-page design, but to the branding of a site in general. In other words: it's not specifically part of the "display" of the sit …

I would keep the primary content field and add a metabox + a secondary instance of the wp editor (using the handy wp_editor function). Custom field values are stored in the database as LONGTEXT, so t …

There is an awesome plugin by @scribu called Posts 2 Posts. It allows you to manually associate different post types (or the same post type) with each other. I use it quite a bit for bigger CMS type …

Okay, I've had two big projects where I've been in control of the server enough to namespace and rely on autoloading. First up. Autoloading is awesome. Not worrying about requires is a relatively go …

Well, you're going to have a lot of loops and a lot of custom WP_Query objects. To start, create an $all_posts variable before you start the main loop on your home page. You should likely put all th …

Has anyone used autoloading and/or PHP namespaces within a plugin or theme? Thoughts on using them? Any harm? Pitfalls? Note: namespaces are PHP 5.3+ only. Assume, for this question, that you know y …

The answers you want are in the code. Meaning, you need to go exploring. Your search should start with wp-includes/template-loader.php. This is the very last file WordPress includes before the them …

The short answer is that there's not really an easy way to do it. There is a solution, but it's sort of ugly. (see waay below.) A Longer Answer I'm including this here in the hopes that it's helpfu …

WordPress itself, in the wp-content folder, includes an empty PHP file which looks like this. <?php // Silence is golden. ?> Should plugins include an empty file like this as well to stop folks vie …

You should use a nonce to protect yourself from CSRF attacks. Even though you're not sending anything to the database, I'd suggest using some of the built in data validation functions (there is even …

I almost always define my own constants for things involving URLs (pattern 3). The reasons: Enqueueing does not account for child theme files. Using get_style_sheet_directory_uri will obviously …

The codex is a good place to start. Looking at the actual code (or via PHP xref) is going to do more for you than reading documentation IMO. You should also sign up for wpMail.me, which contains a l …

wp_nav_menu takes an optional argument called menu, which will fetch any menu by name, slug or ID. If you just want post objects (or anything but the menu HTML), wp_get_nav_menus is the way to go. …