发布于 2015-08-27 16:41:41 | 114 次阅读 | 评论: 0 | 来源: 网络整理
The Debug component provides tools to ease debugging PHP code.
2.3 新版功能: The Debug component was introduced in Symfony 2.3. Previously, the classes were located in the HttpKernel component.
You can install the component in many different ways:
symfony/debug on Packagist);The Debug component provides several tools to help you debug PHP code. Enabling them all is as easy as it can get:
use SymfonyComponentDebugDebug;
Debug::enable();
The enable() method registers an
error handler, an exception handler and
a special class loader.
Read the following sections for more information about the different available tools.
警告
You should never enable the debug tools in a production environment as they might disclose sensitive information to the user.
The ErrorHandler class catches PHP errors
and converts them to exceptions (of class ErrorException or
FatalErrorException for PHP
fatal errors):
use SymfonyComponentDebugErrorHandler;
ErrorHandler::register();
The ExceptionHandler class catches
uncaught PHP exceptions and converts them to a nice PHP response. It is useful
in debug mode to replace the default PHP/XDebug output with something prettier
and more useful:
use SymfonyComponentDebugExceptionHandler;
ExceptionHandler::register();
注解
If the HttpFoundation component is available, the handler uses a Symfony Response object; if not, it falls back to a regular PHP response.