extends multiple system class of codeigniter - codeigniter

Question

I want to handle error on codeigniter so I need to extends both the class "CI_Controller" and "CI_Exceptions" so how to implement it. something like below. if it's possible to handling error globally in hooks or other way for whole system?
class Language extends CI_Controller , CI_Exceptions{
public function __construct()
{
parent::__construct();
parent::CI_Exceptions();
}
}

Answer 1

There is a nice post on how to do this using a hook. I copied the samples from the post, but I would go there and read up on the solution to get going int the right direction.
Hook
$hook['pre_controller'][] = array(
'class' => 'ExceptionHook',
'function' => 'SetExceptionHandler',
'filename' => 'ExceptionHook.php',
'filepath' => 'hooks'
);
Exception Class
class MY_Exceptions extends CI_Exceptions {
public function __construct()
{
parent::CI_Exceptions();
}
public function show_php_error($severity, $message, $filepath, $line)
{
$severity = ( ! isset($this->levels[$severity])) ? $severity : $this->levels[$severity];
$filepath = str_replace("\\", "/", $filepath);
// For safety reasons we do not show the full file path
if (FALSE !== strpos($filepath, '/'))
{
$x = explode('/', $filepath);
$filepath = $x[count($x)-2].'/'.end($x);
}
if (ob_get_level() > $this->ob_level + 1)
{
ob_end_flush();
}
ob_start();
include(APPPATH.'errors/error_php'.EXT);
$buffer = ob_get_contents();
ob_end_clean();
$msg = 'Severity: '.$severity.' --> '.$message. ' '.$filepath.' '.$line;
log_message('error', $msg , TRUE);
mail('dev-mail#example.com', 'An Error Occurred', $msg, 'From: test#example.com');
}
}