this is straight from http://www.php.net/manual/en/function.mysql-db-name.php
<?
mysql_connect('localhost', 'username', 'password');
$db_list = mysql_list_dbs();
$i = 0;
$cnt = mysql_num_rows($db_list);
while ($i < $cnt) {
echo mysql_db_name($db_list, $i) . "<br>\n";
$i++;
}
?>
