Logger

gistfile1.php

<?php

require "./Breto/libs/nette/loader.php";

class CustomDump
{
	static public $file;
	
	static function setFile($file) {
		self::$file = $file;
	}
	
	static function log($a = NULL)
	{
		$file = fopen(self::$file, "a+");
		foreach (func_get_args() as $arg) {
			fwrite($file, Nette\Diagnostics\Debugger::dump($arg, TRUE));
		}
                fclose($file);
	}
}

class Foo
{
	public $prop = 'value';
	
	function test($arg)
	{
		// hardcore ajax action
		CustomDump::log($this, get_defined_vars());
	}
}

CustomDump::setFile('log.txt');

$foo = new Foo;
$arg = 'a456sd';
$foo->test($arg);

mikulas-dites-imac:Web Mikulas$ cat log.txt
Foo(1) {
   "prop" => "value" (5)
}

array(2) {
   "arg" => "a456sd" (6)
   "this" => Foo(1) {
      "prop" => "value" (5)
   }
}