Adding a Server Function - PHP

You can make a function available to clients by exporting it using the addFunction() method. In the WSDL file, there is only one function to implement, getQuote(). It takes $boxer as a lone parameter and returns a string. Let’s create this function and expose it to connecting clients:

<?php
    function getQuote($boxer) {
        if ($boxer == "Tyson") {
            $quote = "My main objective is to be professional
                      but to kill him. (2002)";
        } elseif ($boxer == "Ali") {
            $quote = "I am the greatest. (1962)";
        } elseif ($boxer == "Foreman") {
            $quote = "Generally when there's a lot of smoke,
                      there's just a whole lot more smoke. (1995)";
        } else {
            $quote = "Sorry, $boxer was not found.";
        }
        return $quote;
    }

    $soapserver = new SoapServer("boxing.wsdl");

    $soapserver->addFunction("getQuote");
?>

When two or more functions are defined in the WSDL file, you can choose which ones are to be exported by passing them in as an array, like so:

$soapserver->addFunction(array("getQuote","someOtherFunction");

Alternatively, if you would like to export all functions defined in the scope of the SOAP server, you can pass in the constantSOAP_FUNCTIONS_ALL, like so:

$soapserver->addFunction(array(SOAP_FUNCTIONS_ALL);

It’s important to understand that exporting the functions is not all that you need to do to produce a valid SOAP server. You also need to properly process incoming SOAP requests, a task handled for you via the methodhandle(). This method is introduced next.