DEFINE('DATABASE_USER', 'root');
DEFINE('DATABASE_PASSWORD', '');
DEFINE('DATABASE_HOST', 'localhost');
DEFINE('DATABASE_NAME', 'base');

$dbc = @mysqli_connect(DATABASE_HOST, DATABASE_USER, DATABASE_PASSWORD,
    DATABASE_NAME);

if (!$dbc) {
    trigger_error('Could not connect to MySQL: ' . mysqli_connect_error());
}

$query="select * from table";
$result = mysqli_query($dbc,$query);
while($row=mysqli_fetch_array($result,MYSQLI_ASSOC))
{
	// ...
}

$dbname="dbname";
$dbuser="dbuser";
$dbpass="dbuserpass";
$dbserver="dbserver";
$adminmail="@мыло";

function db_err($handle, $message) {
	printf("%s: %d: %sn", 
		$message, mysql_errno($handle),mysql_error($handle)
	);
	die();
}

function db_connect() {

	global $dbname,$dbuser,$dbpass,$dbserver;
	$dbh = mysql_connect($dbserver,$dbuser,$dbpass);
	if(!$dbh) { db_err($dbh, "mysql_connect"); }
	$res = mysql_select_db($dbname);
	if(!$res) { db_err($dbh, "mysql_select_db"); }
	return($dbh);

}

$dbc=db_connect();
$query = "select * from table";
$result = mysql_query($query,$dbc);
while($result = mysql_query($query,$dbc))
{
	// ...
}