PHP Early fatal errors handler

earlyFatalErrorHandler.php

<?php
// Early fatal errors handler, it will be replaced by a full featured one in Controller class
// (given it does not have any parse or fatal errors of its own)
function earlyFatalErrorHandler($unregister = false)
{
	// Functionality for "unregistering" shutdown function
	static $unregistered;
	if ($unregister) $unregistered = true;
	if ($unregistered) return;

	// 1. error_get_last() returns NULL if error handled via set_error_handler
	// 2. error_get_last() returns error even if error_reporting level less then error
	$error = error_get_last();

	// Fatal errors
	$errorsToHandle = E_ERROR | E_PARSE | E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_COMPILE_WARNING;

	if ((!defined('APP_PRODUCTION_MODE') || APP_PRODUCTION_MODE) && !is_null($error) && ($error['type'] & $errorsToHandle))
	{
		$message = 'FATAL ERROR: ' . $error['message'];
		if (!empty($error['file'])) $message .= ' (' . $error['file'] . ' :' . $error['line']. ')';

		error_log($message);
		error_log(print_r($error, 1));

		// Tell customer that you are aware of the issue and will take care of things
		// echo "Apocalypse now!!!";
	}
}

register_shutdown_function('earlyFatalErrorHandler');