Joshua Thijssen has a quick new post today talking about debugging Symfony components, sharing a simple but useful hint.
Don't you hate it when you are stepping through your debugger during a Symfony application debug session, and all of a sudden it cannot find files anymore as Symfony uses code located in the bootstrap.php.cache instead of the actual Symfony component. Symfony creates these cache-classes in order to speed up execution, but it makes that xdebug cannot find the correct code to step through anymore.
He found a solution in a few changes to his "app_dev.php" bootstrap file to alter the location of the autoloader and disable cache loading. This prevents issues with Symfony trying to access cached versions and use the actual files and locations, making debuggers much more happy.