mysql_connect('localhost', 'username', 'password');
mysql_select_db('database') or die('<p>Could not select database</p>');
$sqlQueryString = 'SELECT *
	FROM MyTable
	WHERE ID = 200';
$sqlQuery = mysql_fetch_array($sqlQueryString);
while ($data = mysql_fetch_array($sqlQuery)) {
	// Do something with your data
	echo $data['value'];
}

$datas = new MySQL();
$datas->query('SELECT *
	FROM MyTable
	WHERE ID = 200');
while ($data = $datas->result()) {
	// Do something with your data
	echo $data['value'];
}

class MySQL{
	private $connection;
	private $db;
	private $query;
 
	function __construct() {
		$this->connection = mysql_connect('localhost', 'username', 'password');
		$this->db = mysql_select_db('database');
	}
 
	function __destruct() {
		mysql_close($this->connection);
	}
 
	function query($query) {
		$this->query = mysql_query($query, $this->connection) or die('<p>'.mysql_error($this->connection).'<br>'.$query.'</p>');
	}
 
		function count() {
		return mysql_num_rows($this->query);
	}
 
	function result() {
		return mysql_fetch_array($this->query, MYSQL_ASSOC);
	}
 
	function result_array() {
		while ($row = mysql_fetch_array($this->query, MYSQL_ASSOC)) {
			$data[] = $row;
		}		
		return $data;
	}
 
	function insert_id() {
		return mysql_insert_id($this->connection);
	}
}