A PHP logging helper class

LogHelper.php

<?php 

namespace application\classes\LogHelper;

class LogHelper
{
	protected $logFile;
	protected $deeplogFile;
	
	public function __construct()
	{
		$this->logFile = __DIR__ . DIRECTORY_SEPARATOR . 'logs/fb-api-logs.txt';
    $this->deeplogFile = __DIR__ . DIRECTORY_SEPARATOR . 'logs/all-logs.txt';

		if (! file_exists($this->logFile) ) {
			touch($this->logFile);
		}
	}

	public function log($message, $severity = 'error')
	{
		$handle  = fopen($this->logFile, 'a+');
		$message = sprintf('[%s] %s: %s %s', date('Y-m-d H:i:s'), $severity, $message, PHP_EOL);
		fwrite($handle, $message);
		fclose($handle);

		return $this;
	}

	/**
	 * @param $logMessage mixed|array
	 * @param $type string
	 * @param $severity string
	 * @return self
	 **/
    public function deepLog($logMessage, $type = '', $severity = 'error')
    {
        $handle  = fopen($this->deeplogFile, 'a+');
        if ( is_array($logMessage) ) {
            $logMessage = print_r($logMessage, true);
        }
        $message = sprintf('[%s] %s [%s] : %s URI: (%s)  QS: (%s) {%s} %s', date('Y-m-d H:i:s'), $type, $severity, $logMessage, $_SERVER['REQUEST_URI'], $_SERVER['QUERY_STRING'], $_SERVER['REMOTE_ADDR'], PHP_EOL . PHP_EOL);
        fwrite($handle, $message);
        fclose($handle);

        return $this;
    }
}

// usage
// $logHelper = new LogHelper();
// $logHelper->log('Bad request' . ' ' . __FILE__ . ':' . __LINE__);
// $logHelper->deepLog($_GET, $_SERVER['REQUEST_METHOD'], 'info');