Google Analytics - FAQ: How long does it take to see report data after adding the tracking code?

https://www.google.com/support/googleanalytics/bin/answer.py?answer=55541&hl=en_GB

Exmple - Generate External XML file

// generate caption/subtitle xml file
$doc = new DOMDocument('1.0');
$tt = $doc->appendChild($doc->createElement("tt"));
$head = $tt->appendChild($doc->createElement("head"));
$styling = $head->appendChild($doc->createElement("styling"));
$styling->setAttribute("xmlns:tts", "http://www.w3.org/2006/10/ttaf1#style");

$style = $styling->appendChild($doc->createElement("style"));
$style->setAttribute("xml:id", "s1");
$style->setAttribute("tts:color", "white");
$style->setAttribute("tts:fontFamily", "proportionalSansSerif");
$style->setAttribute("tts:fontSize", "20px");
$style->setAttribute("tts:textAlign", "center");

$body = $tt->appendChild($doc->createElement('body'));
$div = $body->appendChild($doc->createElement('div'));

// save begin, end, style and text

$para = $div->appendChild($doc->createElement('p'));
$para->setAttribute("begin", "1");
$para->setAttribute("end", "5");
$para->setAttribute("style", "s1");
$para->appendChild($doc->createTextNode("Testing par"));

$doc->save($finalDest);

XML Dom Library

http://phpbuilder.com/manual/en/function.dom-domelement-setattribute.php

get url parameter (by specific para name)

get url parameter (For example if the current URL is "...?delete=1&id=testid" then calling getURLParam("id") will return "testid")

http://mattwhite.me/11tmr.nsf/D6Plinks/MWHE-695L9Z

Bookmaklet overlay javascript

Bookmarklet overlay javascript means put the javascrit into Browser Bookmark which let any website to call that javascript and overlay the current load page.
(Google it if u want to know more)