Access denied for user 'ODBC'@'localhost' (using password: NO)

[Cristian George]

Hello,

I cannot select the database that I succesfully created with Mysql 4.1 and I keep getting the below warnings:

Connected successfully
Warning: mysql_select_db(): Access denied for user 'ODBC'@'localhost' (using password: NO) in C:\Program Files\Apache Group\Apache2\htdocs\tracking\connect.php on line 9

Warning: mysql_select_db(): A link to the server could not be established in C:\Program Files\Apache Group\Apache2\htdocs\tracking\connect.php on line 9
Invalid database

Can anybody explainn me why I can select the database using "mysql.exe" while this is not possible through the following simple script:
<?
$link = mysql_connect("localhost", "root", "alfa");
if (!$link) {
die('Could not connect: ' . mysql_error());
}
echo 'Connected successfully';
mysql_close($link);
mysql_select_db("admin") or die ("Invalid database");
?>

Here the relevant "create" script:

// ne conectam la baza de date
$link = mysql_connect("localhost", "root", "alfa") or die("could not connect.");
print "connected successfully.";

// cream baza de date 'admin'
$sql = "create database admin";
query_exec($sql);
mysql_select_db("admin") or die("<br>could not select database admin.");
print "<br>database selected successfully.";

// admin
$sql = "create table admin (

admin_user text not null,
admin_pass text not null
)";
query_exec($sql);

//
$sql = "insert into admin values('admin', md5('admin'))";
query_exec($sql);