php - PHP : catch exception in cascade. Is it possible?

Question

我真的需要你的帮助...

如何在层叠中捕获异常？
我有一个函数(A)，该函数在另一个文件(B)中调用另一个函数，在另一个文件(C)中调用另一个函数。
我怎样才能捕获函数A的错误，函数C的错误？
可能吗？
看下面的例子...我试图尽可能清晰...

// This code is in a file ( file A ) that call a function of a file B
    require_once('/User_Login.php');

    try
    {
        CREATE_NEW_User_Login(arr_Test, 'hello');
        return true;
    }
    catch(Exception $e)
    {
        echo $e->getMessage();
        return false;
    }
}





// This code is in another file ( file B ) that call a function of a file C
public function CREATE_NEW_User_Login($_INPUT_Array = null, $_INPUT__Password = null)
{

    // Db connection...


    require_once('/User__DBclass.php');
    $DBCl_User = new User($DBConn, null);
    $DBCl_User->SET__CLASS_ATTRIBUTES_Value__by_Array($_INPUT_Array);
    $DBCl_User->SETTER__user_pass(md5($_INPUT__Password));

    $this->config['mysqli']->beginTransaction();

    try
    {
        $DBCl_User->INSERT__NEW_ROW())
        return true;
    }
    catch(Exception $e)
    {
        echo $e->getMessage();
        return false;
    }
}




// This code is in another file ( file C )
// In the User Class ( file: User__DBclass.php )
public function INSERT__NEW_ROW()
{
    $this->config['stmt'] = $this->config['mysqli']->prepare('INSERT INTO tbl_user
                                                                      SET user_id = :user_id,
                                                                          user_name = :user_name,
                                                                          act_code = :act_code;');


    $this->config['stmt']->bindParam(':user_id', $this->user_id, PDO::PARAM_INT);
    $this->config['stmt']->bindParam(':user_name', $this->user_name, PDO::PARAM_STR);
    $this->config['stmt']->bindParam(':act_code', $this->act_code, PDO::PARAM_STR);


    try
    {
        $this->config['stmt']->execute();
        $this->user_id = intval($this->config['mysqli']->lastInsertId());
        return $this->user_id;
    }
    catch(PDOException $e)
    {
        echo $e->getMessage();
        return false;
    }
}

Answer 1

如果要级联异常，则需要再次抛出它们，而不仅仅是返回false。

您可以为每个异常创建新的异常类型，也可以创建常规异常并设置适当的消息和代码。

 catch(Exception $e)
 {
    //do something here if you want
    throw $e;
 }

引用: http://php.net/manual/en/language.exceptions.php