How can I see all the actions attached to an “add_action” hook?
You can see the detailed list of the hook using this snippet: $hook_name=”admin_bar_menu”; global $wp_filter; var_dump( $wp_filter[$hook_name] );
plugins
How to catch/what to do with a WP Error Object
Assign return of the function to the variable. Check the variable with is_wp_error(). If true handle accordingly, for example trigger_error() with message from WP_Error->get_error_message() method. If false – proceed as usual. Usage: function create_custom_post() { $postarr = array(); $post = wp_insert_post($postarr); return $post; } $result = create_custom_post(); if ( is_wp_error($result) ){ echo $result->get_error_message(); }
How to change a user’s password programatically
wp_set_password( $password, $user_id ); See reference for details.
Custom pages with plugin
When you visit a frontend page, WordPress will query the database and if your page does not exist in the database, that query is not needed and is just a waste of resources. Luckily, WordPress offers a way to handle frontend requests in a custom way. That is done thanks to the ‘do_parse_request’ filter. Returning … Read more
Disable email notification after change of password
To disable user email notification, add this in a plugin or theme: add_filter( ‘send_password_change_email’, ‘__return_false’ ); FYI wp_password_change_notification() controls admin email notification when a user changes their password
Delete WordPress plugin Repository
Please mail [email protected] and ask them to remove your plugin. Provide all infos and explain that you won’t start to develop the plugin so the name should no longer be blocked. I would use the same email as while registering the plugin (maybe even replying to it) and I think they will remove it after … Read more
How to enable suggested edits?
Diff the post content, title and author As had to do something related some month ago, here’s the easiest and most future proof way (that I could fine) to check if there’s a change made to the content or title or if the author changed: // Update Title ” !== wp_text_diff( $el[‘post_title’], $GLOBALS[‘post’]->post_title ) AND … Read more
Add Google Analytics manually, or use a plug-in?
I’d suggest either a plug-in or a drop-in section of code in your client’s functions.php file. The advantage of a drop-in is that you can add it once and never have to worry about activating or managing the system once it’s up-and-running. Here’s a quick explanation of how to add the Google tracking code to … Read more
Difference between add_filter and apply_filters
Most of the following can be found in the Codex: apply_filters The callback functions attached to filter hook $tag are invoked by calling this function. This function can be used to create a new filter hook by simply calling this function with the name of the new hook specified using the $tag parameter. $value = … Read more
Implementing a CrunchBase.com Clone using WordPress?
@Tal Gailili: Absolutely, WordPress would be a great platform for a CrunchBase clone! Use Custom Post Type and Custom Taxonomies What you want to look at are Custom Post Types and Custom Taxonomies [see this answer I gave on a very similar subject]. Example Code for your Company’s Post Type and Taxonomies With WordPress 3.0 … Read more