萬盛學電腦網

 萬盛學電腦網 >> 數據庫 >> mysql教程 >> 解決Mysql報錯:PHP Warning: mysql_connect(): mysqlnd cannot connect

解決Mysql報錯:PHP Warning: mysql_connect(): mysqlnd cannot connect

本文章為各位介紹解決Mysql報錯:PHP Warning: mysql_connect(): mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication方法,希望例子能夠幫助到各位。

最近我更新了PHP版本,使用mysql_connect()函數會報錯:

 

PHP 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 /root/test.php on line 3

 

原因:

 

MySQL 5.0 為了和4.1之前的版本兼容,用戶密碼(mysql數據庫的user表password字段)保存的是密碼的16位hash值,而PHP5.3後的 mysql驅動使用41位的密碼hash值進行用戶驗證,所以需要讓mysql中保存用戶密碼的41位hash值,但配置文件中 old_passwords=1的話,password()函數只能返回16位hash值。

 

解決辦法如下:

SET old_passwords = 0;

UPDATE mysql.user SET PASSWORD = PASSWORD( 'phpddt.com' ) WHERE User = 'root' LIMIT 1 ;

SELECT LENGTH( PASSWORD ) FROM mysql.user WHERE User = 'root';

FLUSH PRIVILEGES ;

copyright © 萬盛學電腦網 all rights reserved