Изменен FileLogger для возможности расширения класса

logger/FileLogger.php

@@ -23,9 +23,14 @@ class FileLogger extends Logger
         $this->file_path = Config::get('Logger')->filepath;
     }
 
+    protected function generateOutString($message)
+    {
+        return microtime(true) . "   \t: " . $this->pid . trim($message) . "\r\n";
+    }
+
     protected function concreteLog($message)
     {
-        $out = microtime(true) . "   \t: " . $this->pid . trim($message) . "\r\n";
+        $out = $this->generateOutString($message);
 
         if (!$this->handler) {
             $this->handler = @fopen($this->file_path, "a");