XML To array in php

i have to got response in XML . and i want to convert xml data to array using php. my XML record.

<soap:Body><CreateContact xmlns="http://www.tigerpawsoftware.com"><pram><OfficePhoneNumber>8387909727</OfficePhoneNumber><EmailAddress>asheesh9308@gmail.com</EmailAddress></pram></CreateContact></soap:Body>

Target Array as:-

array('OfficePhoneNumber' => 8387909727,'EmailAddress' => asheesh9308@gmail.com )