PHP將mysql_connection轉換爲PDO

Question

我想將使用mysql_connect的代碼轉換爲pdo，但是我不知道在此之後要做什麼。應該放置「mysql_result」。

$query = "select * from tbl_usuarios where login = '$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); 

} 
?> 

Answer 1

mysql_result($result,0,'id') 

成爲

$number->id 

和

mysql_result($result,0,'nome') 

成爲

$number->nome 

也許你應該添加限制1到你查詢：

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