$objWSSE = new WSSESoap($doc); /* add Timestamp with no expiration timestamp */ $objWSSE->addTimestamp(); /* create new XMLSec Key using RSA SHA-1 and type is private key */ $objKey = new XMLSecurityKey(XMLSecurityKey::RSA_SHA1, array('type' => 'private')); /* load the private key from file - last arg is bool if key in file (true) or is string (FALSE) */ $objKey->loadKey(PRIVATE_KEY, true); /* Sign the message - also signs appropraite WS-Security items */ $objWSSE->signSoapDoc($objKey); /* Add certificate (BinarySecurityToken) to the message and attach pointer to Signature */ $token = $objWSSE->addBinaryToken(file_get_contents(CERT_FILE)); $objWSSE->attachTokentoSig($token); return parent::__doRequest($objWSSE->saveXML(), $location, $saction, $version); } } class Instances { public $instancesSet = null; } $wsdl = 'http://s3.amazonaws.com/ec2-downloads/ec2.wsdl'; try { $sClient = new MySoap($wsdl, array('trace' => 1)); /* Force location path - MUST INCLUDE trailing slash BUG in ext/soap that does not automatically add / if URL does not contain path cause POST header to be invalid */ $sClient->location = 'https://ec2.amazonaws.com/'; $objInstances = new Instances(); $test = $sClient->DescribeInstances($objInstances); var_dump($test); } catch (SoapFault $e) { var_dump($e); }