using monolog with php [closed]

Question

I am having this code to execute in a local host and I am using wamp server for php5.3 x64 bit and I am unable to execute this code and I am very new to php.

Is there any code changes or any additions to this code? My file name is monolog_usage_1.php and I copied monolog file in src of https://github.com/Seldaek/monolog downloaded one to the same directory.

use \Monolog\Logger;
use \Monolog\Handler\StreamHandler;
include '\Monolog\Logger.php';  

// create a log channel
$log = new Logger('name');
$log->pushHandler(new StreamHandler('D:\addlog.log', Logger::WARNING));

// add records to the log

What I pass as the name To the logger('name'), is it any method name like ERROR, ALERT... Thanks in advance..