<?php

session_start();

if(isset($_POST['email']) && empty($_POST['email']) == false)
    $email = addslashes($_POST['email']);
    $senha = md5(addslashes($_POST['senha']));

    $dsn = "mysql:dbname=ead;host=127.0.0.1";
    $dbuser = "root";
    $dbpass = "";

    try {

        $db = new PDO($dsn, $dbuser, $dbpass);

        $sql = $db->query("SELECT * FROM usuarios WHERE email = '$email' AND senha = '$senha'");

        if($sql->rowCount() > 0) {

            $dado = $sql->fetch();

            $_SESSION['email'] = $dado['email'];

            header("Location: index.php");

        }

    } catch(PDOException $e) {

        echo "Falhou: ".$e->getMessage();

    }

?>