A simple, static, logging singleton class

Logger.php

<?php

use Monolog\Handler\RotatingFileHandler;
use Monolog\Logger;

class Log {

	protected static $instance;

	/**
	 * Method to return the Monolog instance
	 *
	 * @return \Monolog\Logger
	 */
	static public function getLogger()
	{
		if (! self::$instance) {
			self::configureInstance();
		}

		return self::$instance;
	}

	/**
	 * Configure Monolog to use a rotating files system.
	 *
	 * @return Logger
	 */
	protected static function configureInstance()
	{
		$dir = dirname(__DIR__) . DIRECTORY_SEPARATOR . 'log';

		if (!file_exists($dir)){
			mkdir($dir, 0777, true);
		}

		$logger = new Logger('RdLotteryManager');
		$logger->pushHandler(new RotatingFileHandler($dir . DIRECTORY_SEPARATOR . 'main.log', 5));
		//$logger->pushHandler(new LogglyHandler('eeb5ba83-f0d6-4273-bb1d-523231583855/tag/monolog'));
		self::$instance = $logger;
	}

	public static function debug($message, array $context = []){
		self::getLogger()->addDebug($message, $context);
	}

	public static function info($message, array $context = []){
		self::getLogger()->addInfo($message, $context);
	}

	public static function notice($message, array $context = []){
		self::getLogger()->addNotice($message, $context);
	}

	public static function warning($message, array $context = []){
		self::getLogger()->addWarning($message, $context);
	}

	public static function error($message, array $context = []){
		self::getLogger()->addError($message, $context);
	}

	public static function critical($message, array $context = []){
		self::getLogger()->addCritical($message, $context);
	}

	public static function alert($message, array $context = []){
		self::getLogger()->addAlert($message, $context);
	}

	public static function emergency($message, array $context = []){
		self::getLogger()->addEmergency($message, $context);
	}

}

LogUse.php

<?php 

Log::info("something really interesting happened", ['extra' => 'information', 'about' => 'anything' ]);

hello, you must make private __construct(){}, otherwise we can create an instance by new Log() and without using get->getLogger()

Your protected static function configureInstance() doesn't return anything, so this is wrong:

* @return Logger

Except this, thank you very much!

Useful, thanks!