I’m still struggling to get my head around this whole hooking into things, so I’m really stuck on trying to do the following task: If update_post_meta is fired then check to see if the meta_key is equal to something (I want to trigger some code if a particular meta_key is used). If the meta key … Read more
I’m trying to debug a plugin which I didn’t develop and I want to list all the registered actions. I’ve read this SO thread: WordPress: How do I get all the registered functions for ‘the_content’ filter – StackOverflow But it’s specific to one hook and it’s about filters, not actions. Is there any variable like … Read more
Is there a way to know what functions are hooked to a particular hook? For example if I’d like to know what functions are hooked to the wp_head hook. 6 Look into the global variable $wp_filter. See my plugin for a list of all comment filters for an example: <?php /* Plugin Name: List Comment … Read more
I am using WordPress 3.1.4 by now. I am confused with where (which hook) do I use: to register and/or enqueue scripts and styles on front- and back-ends? Questions: Which are right hooks to use? All front end register/enqueue scripts/styles in init? Why is there no admin_print_styles-{xxx}? 1 Why registering and queuing properly matters it … Read more
Is there a save_post hook for custom post types? Example: save_my_post_type I know there is publish_my_post_type but I’m looking for a save hook. 2 the hook is the same save_post just make sure its your post type ex: add_action(‘save_post’,’save_post_callback’); function save_post_callback($post_id){ global $post; if ($post->post_type != ‘MY_CUSTOM_POST_TYPE_NAME’){ return; } //if you get here then it’s … Read more
Where can I find a list of all the WordPress hooks and over-ridable functions (pluggable, scriptable, etc)? Edit: Plugin is listed here. 7 @Arlen: As Keith S points out Adam Brown’s List of Hooks is the defacto resource of hooks for WordPress. However, it’s not perfect: It doesn’t show the hooks in order of when … Read more
I have been looking at the plugin API a bit more in depth recently and I was wondering what real differences there were between action and filter hooks. They both are events that receive data as a parameter and they seem to both be able to do the same things. Obviously I see that actions … Read more
In what order add_action hooks execute? i.e. init wp_head wp_footer after_theme_setup etc… ??? ??? ??? EDIT: I’ve also posted my solution. 6 “Data! Data! Data!” he cried impatiently. “I can’t make bricks without clay.” Sherlock Holmes – The Adventure of the Copper Beeches So let’s gather some real data from a vanilla WordPress 5.7.2 install … Read more
Is a way to pass my own parameters to the function in add_filter or add_action. For example take a look in the following code: function my_content($content, $my_param) { do something… using $my_param here … return $content; } add_filter(‘the_content’, ‘my_content’, 10, 1); Can I pass my own parameter? something like: add_filter(‘the_content’, ‘my_content($my_param)’, 10, 1) or add_filter(‘the_content’, … Read more
Is there an action_hook or something similar that could help me achieve this? I tried adding markup in a PHP string variable and just fired off an email with the wp_mail() function like so: $email_to = ‘[email protected]’; $email_subject=”Email subject”; $email_body = “<html><body><h1>Hello World!</h1></body></html>”; $send_mail = wp_mail($email_to, $email_subject, $email_body); But it showed up as plain text? … Read more
