There are two types of WP hooks that can be used to extend the abilities of WP functions.
Filter Hooks
The following will output “Hooked: Home” to the “the_title” WordPress function on every call to the function.
add_filter("the_title", "dl_title");
function dl_title($title) {
return "Hooked: " . $title;
}
Important: This will always return something.
Action Hooks
After the exection of the wp_footer, the following verbiage will output AFTER: Shoutout to all the WordPress devs!
add_action("wp_footer", "dl_footer_shoutout");
function dl_footer_shoutout() {
echo "Shoutout to all the WordPress devs!";
}
Prioritization
Specific functions can be called at different times using prioritization.
