SOAP-ERROR: Encoding: Cannot find encoding

Question

I gotta consume a SOAP service from PHP but I keep failing to get the response. Maybe it's a problem with the format or the call or idk. I can for example get all the functions names from the server with the __getFunctions() method. But when I try to invoke any function I keep getting:

SOAP-ERROR: Encoding: Cannot find encoding

Below is the code.

$wsdl = "https://testing.memoryefactura.com/Memory.FEManager/WebService/CFEService.svc?wsdl";


$parameters = array('Rut' => 'XXXXX',
    'CommerceCode' => 'XXXXX',
    'TerminalCode' => 'XXXXX',
    'Timeout' => 5000);


$options = array(
    'style' => SOAP_RPC,
    'use' => SOAP_ENCODED,
    'soap_version' => SOAP_1_1,
    'cache_wsdl' => WSDL_CACHE_NONE,
    'connection_timeout' => 15,
    'trace' => true,
    'exceptions' => true,
);
try {
    $soap = new SoapClient($wsdl, $options);
    $HeaderSecurity = array(
        'stream_context' => stream_context_create(array(
            'http' => array(
                'header' => array('username' => 'XXXXX',
                    'password' => 'XXXXX'
                )
            ),
        )),
    );
    $header[] = new SoapHeader("http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd", "Security", $HeaderSecurity);

    $soap->__setSoapHeaders($header);
    $data = $soap->Ping($parameters);
} catch (Exception $e) {
    die($e->getMessage());
}

var_dump($data);

First thing, get rid of style and use from your options, they should not be used in WSDL mode. Instead of catching Exception try catching SoapFault which can give you more error details: php.net/manual/en/soapfault.soapfault.php — miken32
– miken32, Commented Nov 14, 2018 at 21:31
And are you really supposed to pass HTTP headers named username and password??? — miken32
– miken32, Commented Nov 14, 2018 at 21:32
Thanks for the tips. Erased style and use and still the same. Tried catching soupFault and it gives nothing usefull (just this: SoapClient->__call('Ping', Array) #1 {main}). Yes, if i dont send those headers gives authentication error. — Martin Chocho
– Martin Chocho, Commented Nov 14, 2018 at 22:02
You need to use the specific functions for SoapFault to get additional details, not just getMessage(). — miken32
– miken32, Commented Nov 14, 2018 at 22:04

Sorbo · Accepted Answer · 2018-11-15 08:57:58Z

Based on the wsdl, the ping method takes only 3 parameters.

class Ping {
    /** @var BaseMessage */ public $message;
}
class BaseMessage {
    /** @var string */  public $CommerceCode;
    /** @var string */  public $TerminalCode;
    /** @var int */ public $Timeout;
}

Also, you incorrectly set the authorization header. The correct way to do this:

$wsdl = "https://testing.memoryefactura.com/Memory.FEManager/WebService/CFEService.svc?wsdl";

$opts = [
    'ssl' => [
        'verify_peer' => false,
        'verify_peer_name' => false
    ],
    'http' => [
        'user_agent' => 'PHPSoapClient'
    ]
];

$params = [
    'encoding' => 'UTF-8',
    'verifypeer' => false,
    'verifyhost' => false,
    'soap_version' => SOAP_1_1,
    'trace' => 1,
    'exceptions' => 1,
    'connection_timeout' => 180,
    'stream_context' => stream_context_create($opts)
];

try {
    $client = new \SoapClient($wsdl, $params);

    $nameSpace = 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd';

    $soapUsername = new \SoapVar(
        'XXXXX',
        XSD_STRING,
        null,
        $nameSpace,
        null,
        $nameSpace
    );

    $soapPassword = new \SoapVar(
        'XXXXX',
        XSD_STRING,
        null,
        $nameSpace,
        null,
        $nameSpace
    );

    $auth = new \stdClass();
    $auth->Username = $soapUsername;
    $auth->Password = $soapPassword;

    $soapAuth = new \SoapVar(
        $auth,
        SOAP_ENC_OBJECT,
        null,
        $nameSpace,
        'UsernameToken',
        $nameSpace
    );

    $token = new \stdClass();
    $token->UsernameToken = $soapAuth;

    $soapToken = new \SoapVar(
        $token,
        SOAP_ENC_OBJECT,
        null,
        $nameSpace,
        'UsernameToken',
        $nameSpace
    );

    $security = new \SoapVar(
        $soapToken,
        SOAP_ENC_OBJECT,
        null,
        $nameSpace,
        'Security',
        $nameSpace
    );

    $header = new \SoapHeader($nameSpace, 'Security', $security, true);

    $client->__setSoapHeaders([$header]);

    $parameters = array(
        'CommerceCode' => 'XXXXX',
        'TerminalCode' => 'XXXXX',
        'Timeout' => 5000
    );

    $data = $client->Ping($parameters);
} catch (SoapFault $fault) {
    echo "REQUEST:\n" . $client->__getLastRequest();
    die("\nFaultcode: " . $fault->faultcode . "\nFaultstring: " . $fault->faultstring);
} catch (Exception $e) {
    die($e->getMessage());
}

Thanks man! It throws Faultcode: a:InternalServiceFault Faultstring: Object reference not set to an instance of an object., any clue?
Don't worry, $data = $client->Ping(array('message' => $parameters)); solved it. Thanks a lot man, saved my neck!

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