one-file-one-post

auto-login.php

<?php
function autologin() {
    if ($_GET['autologin'] == 'demo') {
        $creds['user_login'] = 'demo';        // username
        $creds['user_password'] = 'demo';    // password
        $creds['remember'] = true;
        $autologin_user = wp_signon( $creds, false );
        if ( is_wp_error($autologin_user) )
            echo $autologin_user->get_error_message();
    }
}
add_action( 'after_setup_theme', 'autologin' );

auto-update.php

<?php
add_filter( 'auto_update_plugin', '__return_true' ); // Tự đông update plugins
add_filter( 'auto_update_theme', '__return_true' ); // Tự đông update themes