How would you write a database connection for a database on which you haven't 
yet established a username or password? None of the following work:

$link = mysql_connect ("localhost" , "root" , "") or die(mysql_error());

mysql_select_db ("test", $link) or die(mysql_error());



$link = mysql_connect ("localhost" , "root") or die(mysql_error());

mysql_select_db ("test", $link) or die(mysql_error());



$link = mysql_connect ("localhost") or die(mysql_error());

mysql_select_db ("test", $link) or die(mysql_error());


Thanks.





 
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