add_action() and add_filter() [ad_1]I understand they have their purposes, but why do they work interchangeably?Shouldn't actions like 'wp_login' be excluded from being used in add_filter()?Are these two functions essentially an alias of one function? [ad_2] Previous ArticleYoast plugin incorrectly marking orphan pages Next ArticleSetting up a Wordpress site to be mirrored at 2 different domains
Asked recently: [https://new.reddit.com/r/Wordpress/comments/1epdhsp/whats_the_difference_between_filters_and_actions/](https://new.reddit.com/r/Wordpress/comments/1epdhsp/whats_the_difference_between_filters_and_actions/)
function add_action( $hook_name, $callback, $priority = 10, $accepted_args = 1 ) { return add_filter( $hook_name, $callback, $priority, $accepted_args ); }
Asked recently: [https://new.reddit.com/r/Wordpress/comments/1epdhsp/whats_the_difference_between_filters_and_actions/](https://new.reddit.com/r/Wordpress/comments/1epdhsp/whats_the_difference_between_filters_and_actions/)
function add_action( $hook_name, $callback, $priority = 10, $accepted_args = 1 ) {
return add_filter( $hook_name, $callback, $priority, $accepted_args );
}