系统是redhat 9
安装MYSQL时装了：
1.MYSQL-SHARED-COMPAT-4.1.4
2.MYSQL-SERVER-4.1.4
3.MYSQL-CLIENT-4.1.4

PHP版本为：4.2.2-17
以前用的MYSQL为：3.23.54
现在PHP连接MYSQL时出现：Warning: Client does not support authentication protocol requested by server; consider upgrading MySQL client in /var/www/html/store/login.php on line 39

另外以前用MYSQL3.23.54的时候可以用SERVICE MYSQLD START来起动，现在系统不认识MYSQLD了　　　　　　

Use PHP module "mysqli", not "mysql". MySQL > 4.1 uses new  authentication protocol.