s.no Check lists 1. extension=php_openssl.dll - Enabled 2. default_socket_timeout - 60 3. allow_url_fopen - On 4. local cert try this ... 5. www in URL - Present 6. WSDL - Enabled 7. soap.wsdl_cache_enabled - 1 8. The httpd.conf - time out - 600 (very important)
These are the configuration combination, I tried and resolved from 'localhost' wamp not from live server. In addition to get a output value, in included the below,
$query .= " <ListingNumber>Your listing ID comes here</ListingNumber>";