Good search services for a PHP (CodeIgniter) based job board?

Does anyone know any good 3rd party license based or open source search services (like Yahoo BOSS) that index and search through content?

I'm creating a niche job board in CodeIgniter and I'd rather not have my search be in PHP.

I'd like the ser开发者_运维知识库vice to be customizable enough to support refining content, and location based searching. So a really closed tool might not be the right fit.

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Maybe try apache lucene: http://lucene.apache.org/java/docs/

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You should try sphider search

you can download sphider folder by

http://www.sphider.eu/download.php

then follow this link for codeigniter

Integrate Sphider search engine with CodeIgniter