Path: C:\
<?php
session_start();
?>
<!DOCTYPE html>
<html lang="pt-br">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="Página para realizar login">
<link rel="icon" href="images/favicon.ico">
<title>Área Restrita</title>
<link href="css/bootstrap.min.css" rel="stylesheet">
<link href="css/bootstrap-theme.min.css" rel="stylesheet">
<link href="css/theme.css" rel="stylesheet">
<link href="css/signin.css" rel="stylesheet">
<script src="js/ie-emulation-modes-warning.js"></script>
</head>
<body>
<?php
unset($_SESSION['usuarioId'],
$_SESSION['usuarioNome'],
$_SESSION['usuarioNivelAcesso'],
$_SESSION['usuarioLogin'],
$_SESSION['usuarioSenha']);
?>
<div class="container">
<div class="row">
<div role="main" class="col-md-6" style="background:url('images/capa.jpg') center;">
</div>
<aside role="complementary" class="col-md-6">
<form class="form-signin" method="POST" action="valida_login.php">
<br><br><br>
<h2 class="form-signin-heading text-center">Área Restrita</h2>
<label for="inputEmail" class="sr-only">Usuário</label>
<input type="text" name="usuario" class="form-control" placeholder="Digitar o Usuário" required autofocus><br />
<label for="inputPassword" class="sr-only">Senha</label>
<input type="password" name="senha" class="form-control" placeholder="Digite a Senha" required >
<button class="btn btn-lg btn-primary btn-block" type="submit">Acessar</button>
</form>
<p class="text-center text-danger">
<?php
if(isset($_SESSION['loginErro'])){
echo $_SESSION['loginErro'];
unset($_SESSION['loginErro']);
}
?>
</p>
</aside>
</div>
</div>
<script src="js/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/docs.min.js"></script>
<script src="js/ie10-viewport-bug-workaround.js"></script>
</body>
</html>