<?php
class database {
 
	public function __construct() {
		$this->open_connection();
        }
 
 
	public $connection;
 
	public function open_connection() {
	   $this->connection= mysql_connect("localhost","root","mypassword");
	if(!$this->connection) {
		die ("connetion failed: " . mysql_error());
          } 	
 
        public function close_connection() {
	  $connection=mysql_close($this->connection);
         }
 
}
 
 
$database=new database(); 
?>

 
public function __construct () {
    $this->$sonnection;
 }