PHP Tutorial - Connecting to MySQL

The simple connection

<?
$conn = mysql_connect('localhost');
echo $conn;
?>

Output:

Resource id #28

Other variations

<?
mysql_connect('db.domain.com:33306','rasmus','foobar');
mysql_connect('localhost:/tmp/mysql.sock');
mysql_connect('localhost','rasmus','foobar',
true,MYSQL_CLIENT_SSL|MYSQL_CLIENT_COMPRESS);
?>