popup windows ให้ใส่ username password แบบหน้าของ phpMyAdmin

<?
session_start();
   function fncAuthentication() {
      header('WWW-Authenticate: Basic realm="localhost"');
      header("HTTP/1.0 401 Unauthorized");
      exit;
   }
	
	//*** Check user ***//
   if (trim($_SERVER['PHP_AUTH_USER'])!= "" and trim($_SERVER['PHP_AUTH_PW']) != "")
   {
		mysql_connect("localhost","root","root");
		mysql_select_db("mydatabase");
		$strSQL = "SELECT * FROM user WHERE User = '".trim($_SERVER['PHP_AUTH_USER'])."' 
		and Password = '".trim($_SERVER['PHP_AUTH_PW'])."'";
		$objQuery = mysql_query($strSQL);
		if(mysql_fetch_array($objQuery))
	    {
				$_SESSION["strUser"] = $_SERVER['PHP_AUTH_USER'];
				$_SESSION["strPass"] = $_SERVER['PHP_AUTH_PW'];
		}
		mysql_close();
   }
	
	//*** Session ***//
   if(trim($_SESSION["strUser"])=="" or trim($_SESSION["strPass"])=="")
   {
	   fncAuthentication();	   
	   exit();
   }
?>