<?php
session_start();

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

	$dsn = "mysql:dbname=blog;host=localhost";
	$dbuser = "root";
	$dbpass = "sou18pro";

	try {
		$bd = new PDO($dsn, $dbuser, $dbpass);

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

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

			$dado = $sql->fetch();

			$_SESSION[`id`] = $dado[`id`];

			header("Location: index.php");
		}

	} catch (PDOException $e) {
		echo "Conexão Falhou".$e->getMessage();
	}
}

?>

<form method = "POST" autocomplete="off">

E-mail:<br/>
<input type="text" name="email"><br/><br/>

Senha:<br/>
<input type="password" name="senha"><br/><br/>

<input type="submit" value="Entrar"><br/><br/>

</form>