wp_authenticate │ action-hook │ WP 1.5.1

Fires before the user is authenticated.

The variables passed to the callbacks are passed by reference, and can be modified by callback functions.

Usage

add_action( 'wp_authenticate', 'wp_kama_authenticate_action' );

/**
 * Function for `wp_authenticate` action-hook.
 * 
 * @param string $user_login Username (passed by reference).
 *
 * @return void
 */
function wp_kama_authenticate_action( $user_login ){

	// action...
}

$user_login(string)

Username (passed by reference).

Changelog

Where the hook is called

do_action_ref_array( 'wp_authenticate', array( &$credentials['user_login'], &$credentials['user_password'] ) );

Where the hook is used in WordPress