FileType making use of the PHP Extesion

Yusniel Hidalgo Delgado <[email protected]>
Newsgroups gmane.comp.web.mnogosearch.general
Organization UCI
Message-ID <1268885322.2524.25.camel@yusniel-desktop> 
Greetings. I need your help. I don't find how can I search for filetype
using PHP extension of mnogosearch. Can you help me?.

Note: In the PHP Documentation, I found udm_set_agent_param function,
but in this function, I can't find the right param for my purpose.  

Thanks for your time.
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