@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 they are called, It doesn’t provide file name or line number where invoked, It doesn’t provide a number of arguments passed, It’s not … Read more
Hi @Sruly: You’ve pretty much answered your own question, but I’ll elaborate a bit. Action Hooks Actions Hooks are intended for use when WordPress core or some plugin or theme is giving you the opportunity to insert your code at a certain point and do one or more of the following: Use echo to inject … Read more
“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 and the TwentyTwelve theme activated with only a single Text widget. For the home page, the following do_action / do_action_ref_array calls are … Read more
By default this is not possible. There are workarounds if you do it the OOP way. You could create a class to store the values you want to use later. Example: /** * Stores a value and calls any existing function with this value. */ class WPSE_Filter_Storage { /** * Filled by __construct(). Used by … Read more
from wp_mail codex page: The default content type is ‘text/plain’ which does not allow using HTML. However, you can set the content type of the email by using the ‘wp_mail_content_type’ filter. // In theme’s functions.php or plug-in code: function wpse27856_set_content_type(){ return “text/html”; } add_filter( ‘wp_mail_content_type’,’wpse27856_set_content_type’ );