ExceptionHandlerTypehintRector

Change typehint from Exception to Throwable.

-function handler(Exception $exception) { ... }
+function handler(Throwable $exception) { ... }
 set_exception_handler('handler');

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Php70\Rector\FunctionLike\ExceptionHandlerTypehintRector;

return RectorConfig::configure()
    ->withRules([
        ExceptionHandlerTypehintRector::class,
    ]);
SETS:  PHP 7.0