How to Automatically Redirect If User Is Already Logged In

/**

 * Automatic redirect from login form if a user is already logged in

 *

 * @link https://wpforms.com/developers/how-to-automatically-redirect-if-user-is-already-logged-in/

 */

function redirect_to_specific_page() {

    // enter the page ID of the page that contains the login form

    $page_id = 345; // Change page ID

    // if the user is on the login form page and the user is logged in then redirect

    if ( is_page($page_id) && is_user_logged_in() && ! current_user_can('edit_post', $post_id) ) {

        // enter the URL of the page you would like to redirect them to

        wp_redirect( 'http://www.example-site.com/your-page/', 301 ); 

        exit;

    }

}

add_action( 'template_redirect', 'redirect_to_specific_page' );