Rethrowing exceptions is a relatively common practice in development. Sometimes, we wish to catch an exception, look into it, do a bit of an extra logic, and then rethrow the exception back so that the parent catch block might handle it further.
Let's take a look at the following example:
<?php class FileNotExistException extends Exception {} class FileReadException extends Exception {} class FileEmptyException extends Exception {} $file = 'story.txt'; try { try { $content = file_get_contents($file); if (!$content) { throw new Exception(); } } catch (Exception $e) { if (!file_exists($file)) { throw new FileNotExistException(); } elseif (!is_readable($file)) { throw new FileReadException(); } elseif (empty($content)) ...
