<?php
session_start();
$email = $_POST['email'];
$senha = $_POST['senha'];
$conn = mysql_connect("localhost", "root", "123");
mysql_select_db("data_base", $conn);
$sql = mysql_query("SELECT * FROM usuarios WHERE email='$email' && senha='$senha'");
$total = mysql_num_rows($sql);
if (($email == '')||($senha == '')) {
	echo "<script language='javascript'>alert('Preencha todos os campos!');history.back(-1);</script>";
} else {
	if ($total == 1) {
		$_SESSION['logado'] == true;
		header("Location: admin.php");
		die;
	} else {
		echo "<script language='javascript'>alert('Senha ou e-mail incorreto!');history.back(-1);</script>";
	}
}

?>