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    copied!<p>This is the cleanest solution I could come up with:</p> <pre><code>$client = new SoapClient( 'https://www.sandbox.paypal.com/wsdl/PayPalSvc.wsdl', array( 'soap_version' =&gt; SOAP_1_1 )); $cred = array( 'Username' =&gt; $username, 'Password' =&gt; $password, 'Signature' =&gt; $signature ); $Credentials = new stdClass(); $Credentials-&gt;Credentials = new SoapVar( $cred, SOAP_ENC_OBJECT, 'Credentials' ); $headers = new SoapVar( $Credentials, SOAP_ENC_OBJECT, 'CustomSecurityHeaderType', 'urn:ebay:apis:eBLBaseComponents' ); $client-&gt;__setSoapHeaders( new SoapHeader( 'urn:ebay:api:PayPalAPI', 'RequesterCredentials', $headers )); $args = array( 'Version' =&gt; '71.0', 'ReturnAllCurrencies' =&gt; '1' ); $GetBalanceRequest = new stdClass(); $GetBalanceRequest-&gt;GetBalanceRequest = new SoapVar( $args, SOAP_ENC_OBJECT, 'GetBalanceRequestType', 'urn:ebay:api:PayPalAPI' ); $params = new SoapVar( $GetBalanceRequest, SOAP_ENC_OBJECT, 'GetBalanceRequest' ); $result = $client-&gt;GetBalance( $params ); echo 'Balance is: ', $result-&gt;Balance-&gt;_, $result-&gt;Balance-&gt;currencyID; </code></pre> <p>This produces the following XML request document, which, at the time of writing, was being successfully accepted and processed by PayPal:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;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"&gt; &lt;SOAP-ENV:Header&gt; &lt;ns2:RequesterCredentials&gt; &lt;ns1:Credentials xsi:type="Credentials"&gt; &lt;Username&gt;***&lt;/Username&gt; &lt;Password&gt;***&lt;/Password&gt; &lt;Signature&gt;***&lt;/Signature&gt; &lt;/ns1:Credentials&gt; &lt;/ns2:RequesterCredentials&gt; &lt;/SOAP-ENV:Header&gt; &lt;SOAP-ENV:Body&gt; &lt;ns2:GetBalanceReq xsi:type="GetBalanceRequest"&gt; &lt;GetBalanceRequest xsi:type="ns2:GetBalanceRequestType"&gt; &lt;ns1:Version&gt;71.0&lt;/ns1:Version&gt; &lt;ns2:ReturnAllCurrencies&gt;1&lt;/ns2:ReturnAllCurrencies&gt; &lt;/GetBalanceRequest&gt; &lt;/ns2:GetBalanceReq&gt; &lt;/SOAP-ENV:Body&gt; &lt;/SOAP-ENV:Envelope&gt; </code></pre> <p>In response to some of the other comments on this page:</p> <ul> <li>I'm fairly certain the OP <em>has</em> read the API doc, because that's where the example XML came from that he is trying to reproduce using PHP SOAP library.</li> <li>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.</li> <li>The NVP API looks pretty good too, but I'm a glutten for punishment, so I chose the hard path. :-)</li> </ul>
 

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