<?php
 
class Log()
{
    public function log($message)
    {
        if( $message == "" )
        {
            return;
        }
        
        $message = date("Y-m-d H:i:s")." - ".$message."rn";
 
        file_put_contents("./messages.log", $message, FILE_APPEND);        
    }
 
}
 
 
// do some stuff
 
$oLog = new Log();
 
$oLog->Log("all done!");
 
?>