Debug Component

Debug provides tools to make debugging easier.

Enabling all debug tools is as easy as calling the enable() method on the main Debug class:

use Symfony\Component\Debug\Debug;

Debug::enable();

You can also use the tools individually:

use Symfony\Component\Debug\DebugClassLoader;
use Symfony\Component\Debug\ErrorHandler;
use Symfony\Component\Debug\ExceptionHandler;

if ('cli' !== php_sapi_name()) {
    ini_set('display_errors', 0);
    ExceptionHandler::register();
} elseif (!ini_get('log_errors') || ini_get('error_log')) {
    ini_set('display_errors', 1);
}
ErrorHandler::register();
DebugClassLoader::enable();

This component can optionally take advantage of the features of the HttpKernel and HttpFoundation components.

Resources

You can run the unit tests with the following command:

$ cd path/to/Symfony/Component/Debug/
$ composer install
$ phpunit