Error Handler
From PHPDevShell
Error handling in PHPDevShell
PHPDevShell is build on a master error handler throwing and catching, it will catch and stop any uncaught thrown exceptions. It does have a graceful error handler too that a developer can use in its own classes for maximum error effectiveness.
a Simple graceful error handling situation:
// Lets create a simple function that throws out errors. public function age ($age) { if ($age < 18) { // Note we are throwing to error and not Exception as out error handler is graceful. throw new error('You are too young!'); } }
Right now we have a method with the ability to throw out an exception, so how will we utilise this?
// The code that uses this method should look something like this. try { age(17); } catch (error $e) { // Show warning without line and file information. $e->warning(); // Show warning without line and file information. //$e->warningMessage(); } // You also have these available in your catch block: $e->warningMessage(); $e->noticeMessage(); $e->criticalMessage(); $e->warning(); $e->notice(); $e->critical();
All uncaught error will eventually be catched by the Master Error handlers, so no worries there.
Catching normal throw Exceptions
We could take the exception handling a step further, by catching normal Exceptions inside third party classes and handling the errors on our own:
// Simple function to throw a default exception. function test1 ($age) { if ($age < 18) { throw new Exception('You are too young you little shit.'); } } // Second level functions and exception handler. function test2 ($gender) { if ($gender != 'female') { throw new error('Only girls allowed here my man.'); } else { try { throw new error('Wow another throw inside a throw.'); test1(17); } catch (Exception $e) { throw new error($e->getMessage()); } } } // Lets see how we can throw exceptions, wether in a method or function one could do. try { test2('female'); } catch (error $e) { $e->warning(); }
