nw惠娟系统1.5.0

PSR Log ======= This repository holds all interfaces/classes/traits related to [PSR-3](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md). Note that this is not a logger of its own. It is merely an interface that describes a logger. See the specification for more details. Installation ------------ ```bash composer require psr/log ``` Usage ----- If you need a logger, you can use the interface like this: ```php <?php use Psr\Log\LoggerInterface; class Foo { private $logger; public function __construct(LoggerInterface $logger = null) { $this->logger = $logger; } public function doSomething() { if ($this->logger) { $this->logger->info('Doing work'); } try { $this->doSomethingElse(); } catch (Exception $exception) { $this->logger->error('Oh no!', array('exception' => $exception)); } // do something useful } } ``` You can then pick one of the implementations of the interface to get a logger. If you want to implement the interface, you can require this package and implement `Psr\Log\LoggerInterface` in your code. Please read the [specification text](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md) for details.