Converting Errors to Exceptions
===============================
Silex catches exceptions that are thrown from within a request/response cycle.
However, it does *not* catch PHP errors and notices. This recipe tells you how
to catch them by converting them to exceptions.
Registering the ErrorHandler
----------------------------
The ``Symfony/Debug`` package has an ``ErrorHandler`` class that solves this
problem. It converts all errors to exceptions, and exceptions are then caught
by Silex.
Register it by calling the static ``register`` method::
use Symfony\Component\Debug\ErrorHandler;
ErrorHandler::register();
It is recommended that you do this as early as possible.
Handling fatal errors
---------------------
To handle fatal errors, you can additionally register a global
``ExceptionHandler``::
use Symfony\Component\Debug\ExceptionHandler;
ExceptionHandler::register();
In production you may want to disable the debug output by passing ``false`` as
the ``$debug`` argument::
use Symfony\Component\Debug\ExceptionHandler;
ExceptionHandler::register(false);
.. note::
Important caveat when using Silex on a command-line interface:
The ``ExceptionHandler`` should not be enabled as it would convert an error
to HTML output and return a non-zero exit code::
use Symfony\Component\Debug\ExceptionHandler;
if (!in_array(PHP_SAPI, ['cli', 'phpdbg'])) {
ExceptionHandler::register();
}