How to Structure Data for SOAP Calls Using PHP's SoapClient?

How to Structure Data for SOAP Calls Using PHP SoapClient Class

In SOAP web service interaction, you often encounter the need to pass structured data as parameters to the service. When using PHP's SoapClient class, understanding how to properly construct this data is crucial.

Example Scenario

Consider the following scenario:

• You have a WSDL file defining two functions: "FirstFunction" and "SecondFunction."

• You need to call "FirstFunction" and pass the following data:

  • Contact ID: 100
  • Contact Name: John
  • General Description: Barrel of Oil
  • Amount: 500

SoapClient Structure

The SoapClient class is flexible in handling data structures. However, adhering to the WSDL definition is essential. According to the given WSDL, the "FirstFunction" method expects the parameters to be structured as follows:

struct Contact {
    id id;
    name name;
}

string "string description"
int "int amount"

Code Implementation

Based on the above structure, the PHP code to make the SOAP call would be:

$contact = new Contact(100, "John");
$params = array(
    "Contact" => $contact,
    "description" => "Barrel of Oil",
    "amount" => 500
);

$client = new SoapClient("http://example.com/webservices?wsdl");
$response = $client->__soapCall("Function1", array($params));

Troubleshooting

• "Object has no Contact property" error: This error occurs when the data structure does not match the WSDL definition. Ensure that you have created a Contact object and included it as the first parameter in $params.
• Different error messages: Refer to the PHP documentation and review your code to verify that it meets the expected data structure for the web service you are calling.

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