升级到PHP5.5，mysqlnd报错
报错信息如下：
Fatal error: Uncaught exception ‘PDOException’ with message ‘SQLSTATE[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.cn
写回答
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旺旺：nectar2。您好，
为您搜索到这个，您可以尝试一下，是否能解决到您的问题。
Cannot connect to MySQL 4.1+ using old authentication, http://stackoverflow.com/questions/1575807/cannot-connect-to-mysql-4-1-using-old-authentication
2019-07-17 18:25:31赞同 展开评论 打赏
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