This is a basic example that shows you how to highlight text on a page with PHP after you do a search. This is great if you want to add a search to your site and want your users to see the search text highlights in search results.
The Gogiga Pay per click search engine script is a free download. It parses the XML output of Gogiga.com and displays it in a user friendly format with bolded keywords. The search engine script is a very fast script, written in PHP. Any version of PH
You can use this 'Google Developer API' to create search engine tool. With the help of this tool you can generate and integrate google search tools on your web application to hunt for online queries. This PHP API is simple and employs PEAR package SO
The simplest way to create a google sitemap. This script will instantly create a valid google sitemap file after being uploaded to a directory. It can map multiple folder's using just the one script.
The strength of this package is to index all sorts of things (websites, file systems, files, databases tables, ...). feed the indexer with information, and later query it. / Features: / Boolean search operators like + - (and, not). / Search for...
This is an user-friendly google-like search engine application which is designed to index many document types like doc, pdf, xls, ppt, txt, html, php etc., This application uses powerful algorithm for the searching process. This search engine support | 
