2017/06/25

PHP 5.3以上用mysql_connect()连接MySQL服务器时会报错：

Warning: mysql_connect(): mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication. 
Please use an administration tool to reset your password with the command SET PASSWORD = 
PASSWORD('your_existing_password'). This will store a new, and more secure, hash value in mysql.user.
If this user is used in other scripts executed by PHP 5.2 or earlier you might need to remove the old-
passwords flag from your my.cnf file in /home/ubuntu/workspace/login.php on line 2

这时就要看错误信息了

2017/06/27 Update
Aliyun的共享虚机的SQL有问题...
提交了好久才解决这个问题