PHP将mysql_连接转换为PDO

我正在尝试将使用mysql_connect的代码转换为pdo，但是我不知道接下来该怎么做。应将结果落实到位

$query = "select * from tbl_usuarios where login = '$cliente_username' and senha = '$cliente_password'";
$result = $conexao->query($query);
$number = $result->fetch();

if ($number==0) { ?><script>alert('Dados incorretos! Tente novamente.');</script>
<?php
    exit;
} else {
    $_SESSION['usuario_id'] = mysql_result($result,0,'id');
    $_SESSION['usuario_nome'] = mysql_result($result,0,'nome');
    ?><script>document.location = '../principal.php'</script><?php
}
mysql_close($conexao);  

} 
?>

变成

$number->id

$number->nome

及

变成

$number->id

$number->nome

也许您应该在查询中添加限制1：

$query = "select * from tbl_usuarios where login = '$cliente_username' and senha = '$cliente_password' limit 1";

---

已解决$_会话['usuario_id']=$number['id']；$_SESSION['usuario_nome']=$number['nome']；