CODEWITHSUNDEEP
phpexception
Matt
Matt

Reputation: 1573

Trouble catching exception

I'm working on a simple MVC framework and I am using autoloading of classes and I want to use class_eixists() to check if the controller name parsed from the URI actually exists and respond appropriately. I started with 

$controller = "\\namespace\\controller";
if(class_exists($controller))
   $this->controllerObject = new $controller();
else
    // react appropriately

This ended up throwing an uncaught logic exception if the class didn't exists. If my google-fu hasn't failed me then this is a normal event when using autoloading and the class_exists() function. I figured no big deal and wrapped it in a try catch but I'm still getting the uncaught exception and I can't see what I'm doing wrong.

try {
     if (class_exists($controller))  {
        $this->controllerObject = new $controller(array_slice($parsedURI, 1));
        echo "controller is $controller<br />";
     }   
  } catch (LogicException $e) {
     $e->getMessage();
  } catch (Exception $e) {
     $e->getMessage();
  }

The error output is below. Line 57 is the line with (if (class_exists($controller))). I changed up the actual paths manually because the system administrator is paranoid about any internal info being made public.

Fatal error: Uncaught exception 'LogicException' with message 'Class 
Controller\Gibberish could not be loaded' in     some/path/private/webroot/assets/route.php:57 Stack trace: #0 [internal function]: 
spl_autoload('Controller\Gibb...') #1 
some/path/private/app/webroot/assets/route.php(57): class_exists('\Controller\Gib...') 
#2 some/path/private/app/webroot/index.php(32): Assets\Route-
>__construct('/add/webroot/...') #3 {main} thrown in 
some/path/private/app/webroot/assets/route.php on line 57

Upvotes: 2

Views: 1353

Answers (1)

Matt
Matt

Reputation: 1573

Almost 2 hours of searching for an answer before I post and less than half of one afterward before I find the answer. The reason I couldn't catch the exception is because the logic is inside a method of a class that is inside a namespace. In order to catch the LogicException it has to be prefixed with a \ to specify the global namespace. 

try {
   if (class_exists($controller))  {
      $this->controllerObject = new $controller(array_slice($parsedURI, 1));
      echo "controller is $controller<br />";
   }   
} catch (\LogicException $e) {
   $e->getMessage();
}

I found two other questions with an identical issue:

PhpMailer throwing Fatal Exceptions

Facebook PHP SDK Throwing an Uncatchable OAuthException

Upvotes: 3

Related Questions