Here is a Google Toolbar Custom Button to Search php.net for all LAMP Developers
Its a Button which you can add to your Google Toolbar.
It makes your life easy by enabling you to highlight text on a web page and search for that text on php.net. with ease.

select a text in a web page.
Right click for the popup menu
Click on the label send to PHP Reference

It will search the entire php.net site for the selected text (can be a function name, class name, news or just about anything PHP) and show …

Here is another Google Toolbar Custom Button to Search with the Google Experimental Search Left Hand Search Navigation enabled.
This experimental Search enables you with the following as documented in Google Experimental Search Home Page
Search deeper in a particular type of content—patents, products or news, for example. Google searches across all kinds of content, then ranks results by relevance.
If you want to …

Here is a Google Toolbar Custom Button to search your Web History through Google.
Requirements:
Google Toolbar must be installed in your Browser with the PageRank feature activated and Web History in your Google Account enabled. Google has Toolbar for Internet Explorer and Mozilla Firefox. Therecould be Toolbars for other Browsers also.
You can check and install Google Toolbar from http://toolbar.google.com
You can learn more about Google Web History from here
Click here to Add the Button to your Google Toolbar
Its a single XML file and you can download the XML file and view its …

Playing around with Google Customized Search Engine.
Created a new Customized Search Engine with the following attributes.
Search engine name: Web Development on LAMPSearch engine description:: Web Development on LAMP
Search engine keywords:PHP, JavaScript, MySQL, HTML, CSS, Web, Development,
How to search included sites: Search the entire web but emphasize included sites.
You can add the Search engine as a button if you have the Google toolbar installed in your browser. by clicking on the following link
http://toolbar.google.com/buttons/add?url=http://bijay.rungta.googlepages.com/WebDevelopmentOnLAMP.xml
Looks good so far…
Click here to add the Button to your Google ToolbarIts a single XML file and …