Monolog.php

<?php
/**
 * Be sure that https://github.com/bramus/monolog-colored-line-formatter is installed
 * 
 * composer require bramus/monolog-colored-line-formatter '~2.0'
 */
class L {

    private static $logger;

    private function __construct(){}
    private function __clone(){}

    private static function getConfiguredLogger()
    {
        $handler = new Monolog\Handler\StreamHandler(sys_get_temp_dir() . '/logs.txt');
        $handler->setFormatter(new Bramus\Monolog\Formatter\ColoredLineFormatter());

        $logger = new Monolog\Logger(__CLASS__);
        $logger->pushHandler($handler);

        return $logger;
    }

    protected static function getInstance()
    {
        return !empty(self::$logger)
            ? self::$logger
            : self::$logger = self::getConfiguredLogger();
    }

    public static function debug($message, $context = [])     { self::getInstance()->    debug($message, $context); }
    public static function info($message, $context = [])      { self::getInstance()->     info($message, $context); }
    public static function notice($message, $context = [])    { self::getInstance()->   notice($message, $context); }
    public static function warning($message, $context = [])   { self::getInstance()->  warning($message, $context); }
    public static function error($message, $context = [])     { self::getInstance()->    error($message, $context); }
    public static function critical($message, $context = [])  { self::getInstance()-> critical($message, $context); }
    public static function alert($message, $context = [])     { self::getInstance()->    alert($message, $context); }
    public static function emergency($message, $context = []) { self::getInstance()->emergency($message, $context); }

}