I asked this question on sphinxsearch forum and received this reply:
Hello.
barryhunter just replied to 'RT indexes wildcard search':
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1.Is there any way to make wildcard search in sphinx rt indexes?
I dont beleive so - not implemented yet. Check the bug Tracker, if not ther add it as a feature request.
2.How can I query rt index with sphinx client api for php?
Yes the Sphinx API can query RT indexes (it just cant update them)
(But because RT indexes doesnt index prefixes/infixes (required for wildcard searching) it wont give you any benefit. Everything can do with sphinx API can be done with sphinxQL now I beleive)
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