Zend_Soap_Client has a bug in it that causes the following error to be thrown when calling a method on the soap object:

{quote} Fatal error: Uncaught SoapFault exception: [SOAP-ENV:Client] Operation '' is not defined in the WSDL for this service in /var/www/site/library/Zend/Soap/Client.php:1113 Stack trace: #0 /var/www/site/library/Zend/Soap/Client.php(1113): SoapClient->__soapCall('NDFDgen', Array, NULL, NULL, Array) #1 [internal function]: Zend_Soap_Client->__call('NDFDgen', Array) #2 /var/www/site/public/test.php(156): Zend_Soap_Client->NDFDgen(39, -77, 'time-series', '2010-02-27T12:0...', '2010-02-28T12:0...', Array) #3 {main} thrown in /var/www/site/library/Zend/Soap/Client.php on line 1113 {quote}

If I bypass Zend_Soap_Client and use SoapClient, passing the exact same parameters and then calling the exact same method name, it WORKS.

Code that FAILS (with or without compression being set in options):

$soap = new Zend_Soap_Client('http://weather.gov/forecasts/xml/…', array());

$soap->NDFDgen(39.0000, -77.0000, 'time-series', '2010-02-27T12:00', '2010-02-28T12:00', array(
        'maxt' => 1, 
        'mint' => 1, 
        'temp' => 1,
        'dew' => 1,
        'appt' => 1,
        'pop12' => 1,
        'qpf' => 1,
        'snow' => 1,
        'sky' => 1,
        'rh' => 1,
        'wspd' => 1,
        'wdir' => 1,
        'wx' => 1,
        'icons' => 1,
        'waveh' => 1,
        'incw34' => 1,
        'incw50' => 1,
        'incw64' => 1,
        'cumw34' => 1,
        'cumw50' => 1,
        'cumw64' => 1,
        'wgust' => 1,
        'conhazo' => 1,
        'ptornado' => 1,
        'pxtornado' => 1,
        'phail' => 1,
        'pxhail' => 1,
        'tstmprb' => 1,
        'tstmcat' => 1,
        'pxtstmwinds' => 1,
        'ptstmwinds' => 1,
        'ptotsvrtstm' => 1,
        'pxtotsvrtstm' => 1,
        'tmpabv14d' => 0,
        'tmpblw14d' => 0,
        'tmpabv30d' => 0,
        'tmpblw30d' => 0,
        'tmpabv90d' => 0,
        'tmpblw90d' => 0,
        'prcpabv14d' => 0,
        'prcpblw14d' => 0,
        'prcpabv30d' => 0,
        'prcpblw30d' => 0,
        'prcpabv90d' => 0,
        'prcpblw90d' => 0,
        'precipa_r' => 1,
        'sky_r' => 1,
        'td_r' => 1,
        'temp_r' => 1,
        'wdir_r' => 1,
        'wwa' => 1,
        'wspd_r' => 1
));

Code that WORKS (Substitute Zend_Soap_Client for SoapClient):

$soap = new SoapClient('http://weather.gov/forecasts/xml/…');

$result =  $soap->NDFDgen(39.0000, -77.0000, 'time-series', '2010-02-27T12:00', '2010-02-28T12:00', array(
        'maxt' => 1, 
        'mint' => 1, 
        'temp' => 1,
        'dew' => 1,
        'appt' => 1,
        'pop12' => 1,
        'qpf' => 1,
        'snow' => 1,
        'sky' => 1,
        'rh' => 1,
        'wspd' => 1,
        'wdir' => 1,
        'wx' => 1,
        'icons' => 1,
        'waveh' => 1,
        'incw34' => 1,
        'incw50' => 1,
        'incw64' => 1,
        'cumw34' => 1,
        'cumw50' => 1,
        'cumw64' => 1,
        'wgust' => 1,
        'conhazo' => 1,
        'ptornado' => 1,
        'pxtornado' => 1,
        'phail' => 1,
        'pxhail' => 1,
        'tstmprb' => 1,
        'tstmcat' => 1,
        'pxtstmwinds' => 1,
        'ptstmwinds' => 1,
        'ptotsvrtstm' => 1,
        'pxtotsvrtstm' => 1,
        'tmpabv14d' => 0,
        'tmpblw14d' => 0,
        'tmpabv30d' => 0,
        'tmpblw30d' => 0,
        'tmpabv90d' => 0,
        'tmpblw90d' => 0,
        'prcpabv14d' => 0,
        'prcpblw14d' => 0,
        'prcpabv30d' => 0,
        'prcpblw30d' => 0,
        'prcpabv90d' => 0,
        'prcpblw90d' => 0,
        'precipa_r' => 1,
        'sky_r' => 1,
        'td_r' => 1,
        'temp_r' => 1,
        'wdir_r' => 1,
        'wwa' => 1,
        'wspd_r' => 1
        )
);