Can not extends core Exception.php

[eluser]Aken[/eluser]
Because show_error() by itself is a procedural function inside of system/core/Common.php, which in turn calls the show_error() method of the Exceptions class.

Not 100% how it works, but as an example:

Code:

show_error(); // procedural

$exc = new Exceptions();
$exc->show_error(); // Object orientated class method.