simple php SoapClient example for paypal needed - php

Question

Could I get a simple example of using PHP's SoapClient class to make an empty call to Paypal with nothing but the version number? I have the correct WSDL url and server url, so that's not what I need help with. This is what I have:
public function SOAPcall($function, $args=array()) {
$args['Version'] = '63.0';
$args = new SoapVar($args, SOAP_ENC_ARRAY, $function.'_Request');
$args = array(new SoapVar($args, SOAP_ENC_ARRAY, $function.'_Req', 'urn:ebay:api:PayPalAPI'));
$results = $this->soapClient->__soapCall($function, $args, array('location' => $this->activeKeys['certificate']), $this->soapOptions);
}
I hope it's okay I am not showing everything. The body of the request comes out completely wrong, as you can see below:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ns1="urn:ebay:api:PayPalAPI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns2="urn:ebay:apis:eBLBaseComponents">
<SOAP-ENV:Header>
<ns1:RequesterCredentials>
<ns2:Credentials>
<ns2:Username>xxx</ns2:Username>
<ns2:Password>xxx</ns2:Password>
<ns2:Signature>xxx</ns2:Signature>
</ns2:Credentials>
</ns1:RequesterCredentials>
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<ns1:GetBalanceReq xsi:type="ns1:GetBalance_Req">
<xsd:string>63.0</xsd:string>
</ns1:GetBalanceReq>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
It should look like this:
<?xml version=”1.0” encoding=”UTF-8”?>
<SOAP-ENV:Envelope xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
xmlns:SOAP-ENC=”http://schemas.xmlsoap.org/soap/encoding/”
xmlns:SOAP-ENV=”http://schemas.xmlsoap.org/soap/envelope/”
xmlns:xsd=”http://www.w3.org/2001/XMLSchema”
SOAP-ENV:encodingStyle=”http://schemas.xmlsoap.org/soap/encoding/”
><SOAP-ENV:Header>
<RequesterCredentials xmlns=”urn:ebay:api:PayPalAPI”>
<Credentials xmlns=”urn:ebay:apis:eBLBaseComponents”>
<Username>api_username</Username>
<Password>api_password</Password>
<Signature/>
<Subject/>
</Credentials>
</RequesterCredentials>
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<specific_api_name_Req xmlns=”urn:ebay:api:PayPalAPI”>
<specific_api_name_Request>
<Version xmlns=urn:ebay:apis:eBLBaseComponents”>service_version
</Version>
<required_or_optional_fields xsi:type=”some_type_here”> data
</required_or_optional_fields>
</specific_api_name_Request>
</specific_api_name_Req>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
Of course, Paypal throws a "Version is not supported" error.

Answer 1

This is the cleanest solution I could come up with:
$client = new SoapClient( 'https://www.sandbox.paypal.com/wsdl/PayPalSvc.wsdl',
array( 'soap_version' => SOAP_1_1 ));
$cred = array( 'Username' => $username,
'Password' => $password,
'Signature' => $signature );
$Credentials = new stdClass();
$Credentials->Credentials = new SoapVar( $cred, SOAP_ENC_OBJECT, 'Credentials' );
$headers = new SoapVar( $Credentials,
SOAP_ENC_OBJECT,
'CustomSecurityHeaderType',
'urn:ebay:apis:eBLBaseComponents' );
$client->__setSoapHeaders( new SoapHeader( 'urn:ebay:api:PayPalAPI',
'RequesterCredentials',
$headers ));
$args = array( 'Version' => '71.0',
'ReturnAllCurrencies' => '1' );
$GetBalanceRequest = new stdClass();
$GetBalanceRequest->GetBalanceRequest = new SoapVar( $args,
SOAP_ENC_OBJECT,
'GetBalanceRequestType',
'urn:ebay:api:PayPalAPI' );
$params = new SoapVar( $GetBalanceRequest, SOAP_ENC_OBJECT, 'GetBalanceRequest' );
$result = $client->GetBalance( $params );
echo 'Balance is: ', $result->Balance->_, $result->Balance->currencyID;
This produces the following XML request document, which, at the time of writing, was being successfully accepted and processed by PayPal:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:ns1="urn:ebay:apis:eBLBaseComponents" xmlns:ns2="urn:ebay:api:PayPalAPI"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SOAP-ENV:Header>
<ns2:RequesterCredentials>
<ns1:Credentials xsi:type="Credentials">
<Username>***</Username>
<Password>***</Password>
<Signature>***</Signature>
</ns1:Credentials>
</ns2:RequesterCredentials>
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<ns2:GetBalanceReq xsi:type="GetBalanceRequest">
<GetBalanceRequest xsi:type="ns2:GetBalanceRequestType">
<ns1:Version>71.0</ns1:Version>
<ns2:ReturnAllCurrencies>1</ns2:ReturnAllCurrencies>
</GetBalanceRequest>
</ns2:GetBalanceReq>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
In response to some of the other comments on this page:
I'm fairly certain the OP has read the API doc, because that's where the example XML came from that he is trying to reproduce using PHP SOAP library.
The PayPal PHP API has some shortcomings, the biggest one being that it fails to work with E_STRICT warnings turned on. It also requires PEAR, so if you are not currently using PEAR in your project it means dragging in quite a lot of new code, which means more complexity and potentially more risk, in order to achieve what should be two or three fairly simple XML exchanges for a basic implementation.
The NVP API looks pretty good too, but I'm a glutten for punishment, so I chose the hard path. :-)

Answer 2

Did you check out the API's provided by PayPal here? And a direct link to the PHP SOAP API download.
And here is a link to the NVP API which PayPal recommends you use.

Answer 3

PHP has a very easy to use soapClass.
Which can be found here.
http://www.php.net/manual/en/class.soapclient.php