Adding Search Capabilities to my website [closed]

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Instead of writing a PHP script from scratch, I wanted to know if there are an开发者_StackOverflowy free scripts, plugins, or APIs out there that allow me to add a search box to my website to search only content on my site.

Google's free version is ad-supported, and I am looking for a clean, simple, and non ad-supported solution. Any ideas?

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Check out the zend lucene extension. It provides a PHP interface to the open source Apache Lucene search engine.

Zend_Search_Lucene Documentation: http://framework.zend.com/manual/en/zend.search.lucene.html

Apache Lucene project: http://lucene.apache.org/java/docs/index.html

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There are a number of these, one of them are sphider.

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Here is a super easy way that works pretty well:

http://sitecomber.com/getsitecomber/

You can create code to paste into your site in about 2 minutes. It doesn't get easier than that. Search is powered by Google, but results are isolated to your website.