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PO"Object reference not set to an instance of an object" error connecting to SOAP server from PHP
 

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    <p>I'm making my first attempt to connect to a SOAP server from PHP, and I'm not understanding how to log in and get the data I need. The service I'm trying to connect to is the Hawley USA service <a href="http://hawleyusa.com/thcServices/StoreServices.asmx">http://hawleyusa.com/thcServices/StoreServices.asmx</a>). I've been looking at a few posts on how to connect, and I get the basics. I've verified that I have SOAP enabled in my PHP, and I'm just trying to get an inventory list. Here's the code I'm using:</p> <pre><code>&lt;?php ini_set("soap.wsdl_cache_enabled", "0"); // disabling WSDL cache $wsdl_path = "http://hawleyusa.com/thcServices/StoreServices.asmx?WSDL"; $login_id = 'mylogin_id'; $password = 'mypassword'; $client = new SoapClient($wsdl_path); try { echo "&lt;pre&gt;\n"; print($client-&gt;InventoryList(array("LoginID" =&gt; $login_id, "Password" =&gt; $password))); echo "\n"; } catch (SoapFault $exception) { echo $exception; } </code></pre> <p>However, when I run this code, I get this error:</p> <pre><code>SoapFault exception: [soap:Server] Server was unable to process request. ---&gt; Object reference not set to an instance of an object. in /Users/steve/Sites/mysite/hawley_client.php:12 </code></pre> <p>When debugging, I can see the $client instance initiated, so I'm not sure why I'm getting this error.</p> <p>Second question: Am I passing the user ID and password correctly?</p> <p>Thanks.</p> <p><strong>Update</strong>: I threw in $client->__getLastRequest, and this is what I got:</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="http://hawleyusa.com/thcServices/"&gt; &lt;SOAP-ENV:Body&gt; &lt;ns1:InventoryList/&gt; &lt;/SOAP-ENV:Body&gt; &lt;/SOAP-ENV:Envelope&gt; </code></pre> <p>So I can see that I'm missing my login ID and password. How do I add them to my InventoryList call?</p>
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