[PHP知识库]Monolog使用教程【入门案例版】

Monolog是PHP记录日志的神器，它真的很强大。在我们的日常工作中，掌握其中的几项，就大体够用了…

1. 输出到文件中，并自定义格式

	require_once('vendor/autoload.php');

	use Monolog\Logger;
	use Monolog\Formatter\LineFormatter;
	use Monolog\Handler\StreamHandler;

	$log = new Logger('debug');
	$dateFormat = "Y m jS, g:i a";
	// the default output format is "[%datetime%] %channel%.%level_name%: %message% %context% %extra%\n"
	$output = "%datetime% > %level_name% > %message% %context% %extra%\n";
	// finally, create a formatter
	$formatter = new LineFormatter($output, $dateFormat);

	$stream = new StreamHandler('1.log', Logger::CRITICAL);
	$stream->setFormatter($formatter);
	$log->critical("abc");

结果：

2. 输出到控制台

	require_once('vendor/autoload.php');

	use Monolog\Logger;
	use Monolog\Formatter\LineFormatter;
	use Monolog\Handler\StreamHandler;

	$log = new Logger('debug');

	$stream = new StreamHandler('php://stdout', Logger::CRITICAL);
	$stream->setFormatter($formatter);
	$log->critical("abc");

3. 输出到浏览器控制台

	require_once('vendor/autoload.php');

	use Monolog\Logger;
	use Monolog\Formatter\LineFormatter;
	use Monolog\Handler\StreamHandler;
	use Monolog\Handler\FirePHPHandler;

	$log = new Logger('debug');

	$handler = new \Monolog\Handler\BrowserConsoleHandler(Logger::INFO);

	$log->pushHandler($handler);
	// 额外添加url等web信息
	$log->pushProcessor(new \Monolog\Processor\WebProcessor());
	
	$log->addRecord(Logger::DEBUG,'My logger is now ready', ['author'=>'jim','date'=>date("Y-m-d")]);
	$log->addRecord(Logger::CRITICAL,'My logger is now ready', ['author'=>'jim','date'=>date("Y-m-d")]);
	$log->emergency("abc");

4. 输出到FirePHP 【浏览器需要添加firePHP插件】

	require_once('vendor/autoload.php');

	use Monolog\Logger;
	use Monolog\Formatter\LineFormatter;
	use Monolog\Handler\StreamHandler;
	use Monolog\Handler\FirePHPHandler;

	$log = new Logger('debug');

	$firephp = new FirePHPHandler();

	$log->pushHandler($firephp);
	$log->pushProcessor(new \Monolog\Processor\WebProcessor());
	
	
	$log->addRecord(Logger::DEBUG,'My logger is now ready', ['author'=>'liujx','date'=>date("Y-m-d")]);
	$log->addRecord(Logger::CRITICAL,'My logger is now ready', ['author'=>'liujx','date'=>date("Y-m-d")]);
	$log->emergency("abc");