Fatal error: Uncaught Error: Call to a member function query() on string in /www/wwwroot/www.51jh.com/Mysql.php:90 Stack trace: #0 /www/wwwroot/www.51jh.com/index.php(34): Mysql->all() #1 {main} thrown in /www/wwwroot/www.51jh.com/Mysql.php on line 90