<?php

class login {

    private $username ;
    private $pass ;


    public function __construct($username , $pass ) {


            $this->connect();
            $this->setdata($username , $pass );
            $this->login($username , $pass );

    }

        private function connect(){

            include 'database.php';
            new connect();
    }

        private function setdata($username , $pass ){

        $this->username = $username ;
        $this->pass     = $pass ;

    }

        private function login($username , $pass ) {

            global  $con ;

            $stmt = $con->prepare("SELECT username, password  FROM user WHERE  username =? AND  password =? ") ;

                $stmt->execute(array($username, $pass));

                $get = $stmt->fetch();

                $count = $stmt->rowCount();



            if ($count > 0 ){

                return TRUE;
            }
            else {
                throw new Exception("xxxxxxxxxx");
            }
            }

}



=========================================


<?php

class connect {


public function __construct(){



	$dsn = 'mysql:host=localhost;dbname=ali';
	$user = 'root';
	$pass = '';
	$option = array(
		PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8',
	);

	try {
		$con = new PDO($dsn, $user, $pass, $option);
		$con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
                echo "<br> you are connected <br>" ;
                return $con;

	}

	catch(PDOException $e) {
		echo 'Failed To Connect' . $e->getMessage();
	}

        }



}