.htaccess - how to redirect in php using htaccess -

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i need redirect page www.someone.com/2011/03/05 sample.php?dt=2011/03/05 using htaccess , php, thanks.

rewriteengine on rewriterule ^(\d{4}\/\d{2}\/\d{2})/?$ sample.php?dt=$1 [l]

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