mysql connection design and concurrent connections
function dbConnect() {
$dbHost = 'localhost';
$dbUser = 'user';
$dbPass = 'pass';
$dbName = 'dbase';
    mysql_connect($dbHost, $dbUser, $dbPass)or die(mysql_error());
    mysql_select_db($dbName) or die(mysql_error());
   }

include 'config.php';
dbConnect();