php soap:ServerServer was unable to process request. ---> Sequence contains no elements - php

Question

I need to send an XML as soap request using CURL. I have created xml using
$xml = "<?xml .............." blah blah
That looks like
<?xml version='1.0' encoding='utf-8'?><soap:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'><soap:Body><extLoginData xmlns='http://www.JOI.com/schemas/ViaSub.WMS/'><ThreePLKey>4dfdf34</ThreePLKey><Login>abv</Login><Password>abc</Password><FacilityID>1ee</FacilityID><CustomerID>xfs</CustomerID></extLoginData><orders xmlns='http://www.JOI.com/schemas/ViaSub.WMS/'><Order><TransInfo><ReferenceNum>Test</ReferenceNum><PONum>12345</PONum></TransInfo><ShipTo><Name></Name><CompanyName>Peter's Test</CompanyName><Address><Address1>7301 Lennox Ave Unit E3</Address1><Address2></Address2><City>Los Angeles</City><State>CA</State><Zip>90010</Zip><Country>US</Country></Address><PhoneNumber1>858-449-8022</PhoneNumber1><EmailAddress1>lshaules#mercatismedia.com</EmailAddress1><CustomerName>Elizabeth Shaules</CustomerName></ShipTo><ShippingInstructions><Carrier>USPS</Carrier><Mode>First Class Mail</Mode><BillingCode>Prepaid</BillingCode></ShippingInstructions><OrderLineItems><OrderLineItem><SKU>947</SKU><Qualifier>XXX</Qualifier><Qty>1</Qty></OrderLineItem></OrderLineItems></Order></orders></soap:Body></soap:Envelope>
And I am using following code to send CURL request
$url = 'http://someurl.com/Contracts.asmx';
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 120);
curl_setopt($curl, CURLOPT_ENCODING, 'gzip');
curl_setopt($curl, CURLOPT_HTTPHEADER, array(
'SOAPAction:"http://www.example.com/ViaSub.WMS/CreateOrders"',
'Content-Type: text/xml; charset=utf-8',
));
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $orderXml);
$result = curl_exec($curl);
But I am getting
soap:ServerServer was unable to process request. ---> Sequence contains no elements
I have searched but haven't found any thing related to it. Can you please let me know what I am doing wrong and how I do it?

Answer 1

This looks like a schema validation error. You don't provide a link to the definition, but a quick search showed me this documentation page. If this is the one you need take a look at the WSDL: https://secure-wms.com/webserviceexternal/contracts.asmx?WSDL
Look for instance the element PalletCount within Order. You see it has minOccurs="1", meaning it's mandatory. But in the xml string you copy there's no such element. That's indeed a sequence with missing elements. (There may be some other schema inconsistencies, have a close look).
Also, consider using the SoapClient PHP class
$WSDL = 'https://secure-wms.com/webserviceexternal/contracts.asmx?WSDL';
$options = [
'trace' => true,
'cache' => WSDL_CACHE_NONE,
'exceptions' => true
];
$client = new SoapClient($WSDL, $options);
$payload = [
'extLoginData' => [
'ThreePLKey' => '4dfdf34',
'Login' => 'abv',
'Password' => 'abc',
'FacilityID' => '1ee',
'CustomerID' => 'xfs'
],
'orders' => [
'Order' => [
// etc...
]
]
]);
$response = $client->CreateOrders($payload);
This way the client handles the schema validation, headers setting (you can set additional headers, though), the namespacing, and the array to xml conversion.

Answer 2

Use this
$xml = "<?xml ..............</soap:Envelope>";
$headers = array(
"Content-type: text/xml;charset=\"utf-8\"",
"Accept: text/xml",
"Cache-Control: no-cache",
"Pragma: no-cache",
"SOAPAction: http://www.example.com/ViaSub.WMS/CreateOrders",
"Content-length: ".strlen($xml),
); //SOAPAction: your op URL
$url = 'http://someurl.com/Contracts.asmx';
// PHP cURL for https connection with auth
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); // the SOAP request
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
// converting
$response = curl_exec($ch);
curl_close($ch);
var_dump($response);