How to deal with multiple exceptions?

Question

PHP

There are two classes. Both throw an exception if something went wrong.
Do I need to wrap each class, or both under each other in one tru cach condition?

Answer 1

It all depends on whether both classes together are part of the same layer or if it is an interaction between different layers.
In the first case, exceptions can be combined with a single interface (or parent exception). And on this generalized exception to be tied in another layer.

Example

class FirstException extend ModuleException {}
class SecondException extend ModuleException {}

class ModuleFirst 
{
     public function work()
     {
          throw new FirstException('first);
     }
}
class ModuleSecond 
{
     public function work()
     {
          throw new SecondException('second);
     }
}

тогда дальше ловить из слоя можно так

try {
    $module->work();
} catch(ModuleException $e) {
     // обработка
}

If the interaction between the layers, then wrap each time and throw yours further.

Example

class FirstException {}
class SecondException {}

class ModuleFirst 
{
     public function work()
     {
         try {
            $module2->work();
        } catch(SecondException $e) {
             throw new FirstException($e->getMessage, 0, $e);
        }
     }
}

class ModuleSecond 
{
     public function work()
     {
          throw new SecondException('second);
     }
}

try {
     $module1->work();
} catch(FirstException $e) {
    // обработка
}