using PHP curl and a client cert

Hello, I am trying to post to a ste that requires me to use a client cert. I can get it to work for both windows and unix, but only on the command line. I have tried without success to use the PHP built-in methods for doing this. Here is the command line that works: curl -d "<REQUEST_GROUP MISMOVersionID='2.1'> <REQUESTING_PARTY> <PREFERRED_RESPONSE _Format='XML' /> </REQUESTING_PARTY> <REQUEST LoginAccountIdentifier='12345' LoginAccountPassword='pass'> <REQUEST_DATA> <CREDIT_REQUEST MISMOVersionID='2.1'> <CREDIT_REQUEST_DATA CreditRequestType='Individual'> <CREDIT_REPOSITORY_INCLUDED _EquifaxIndicator='Y' _ExperianIndicator='Y' _TransUnionIndicator='Y'/> </CREDIT_REQUEST_DATA> <LOAN_APPLICATION> <BORROWER _FirstName='BOBBY' _LastName='BANKRUPT' _PrintPositionType='Borrower' _SSN='000546327'> <_RESIDENCE _City='PRESCOTT' _State='AZ' _PostalCode='86305' BorrowerResidencyType='Current'> <PARSED_STREET_ADDRESS _AddressType='NormalAddress' _HouseNumber='1003' _StreetName='Enred Way' /> </_RESIDENCE> </BORROWER> </LOAN_APPLICATION> </CREDIT_REQUEST> </REQUEST_DATA> </REQUEST></REQUEST_GROUP>" -k -E myCert.pem:myPassword https://www.mysite.com/Listener.exe Any ideas of how to make this work with the curl_setopt methods? I tried variations of this: $ch = curl_init(); curl_setopt ($ch, CURLOPT_URL, $url); curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0); curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 2); curl_setopt ($ch, CURLOPT_SSLKEY, 'myCert.pem'); curl_setopt ($ch, CURLOPT_SSLKEYPASSWD, 'myPassword'); $result = curl_exec ($ch); Thanks, Scott