MySQL installation question

[g00bster]

After installing MySQL on a windows machine, I set up a root account and password with the winMySQL tool. When using the MySQL database then, I connect to it in a PHP page by executing:

mysql_connect("localhost","username_i_entered","password_i_entered");
mysql_select_db("root");

I have noticed, however, that the MySQL database can be accessed just the same by executing:

mysql_connect("localhost");
mysql_select_db("root");

What can I do to prevent this??

Many thanks...

[universelittle]

it has its default value, if u omit username and password, the default is "root" without password.

[g00bster]

its not that at all ... sorry for the ambiguity. i can access MySQL with NO username and NO password. I find that to be a serious problem i need to fix.