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1.错误信息
Message: mysqli::real_connect(): (HY000/2000): 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
处理方法:
次问题主要是 使用高版本mysql数据库导入了低版本数据引起的,其中高版本数据库的password hashes 是41位的hashes,而低版本数据库的数据存储的root 的password是16位的hashes,需要修改user表的password字段数据为41为的hashes,一下为具体修改的命令。
use mysql; // 进入存储user表的数据库
set session old_passwords=0; //修改session使用41位hashes(16为1,41的为0)
select password(‘111‘); //查看你的password函数是否可以生成41位的hashes
set password for ‘root‘ @‘localhost‘ = password(‘111‘); //使用password函数修改你的root密码为41的hashes
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原文地址:http://www.cnblogs.com/love123/p/4428869.html