Question

Inside wp-login.php we have several action process: ‘logout’, ‘register’, ‘retrievepassword’, etc… and of course ‘login’.

I am using the login_footer hook to add some special features right after the “login form”

add_filter('login_footer', array($this, 'special_form'));

How can I decide when just login process is running? So I can avoid show the special form in other actions (‘register’, ‘retrievepassword’, etc…).

Answer 1

Use the “login_form_login” hook.

add_action('login_form_login', array($this, 'enable_special_form'));

/*... */

function enable_special_form() {
    add_action('login_footer', array($this, 'special_form'));
}

There’s also a bunch of other login_form_* hooks for other wp-login.php actions – login_form_logout, login_form_register, and so on.

For reference, in WordPress 3.4.1 the login_form_* action is executed on line 380 of wp-login.php, and the available actions are listed on line 357.