[zenthanian]

I don't have a create appointment example... but I do have a search request example. Hope this helps.

<?php
    $options = array('uri' => "urn:zimbraMail");
	$params = array( 
    	new SoapParam("inbox", 'l'), 
    	new SoapParam("5", 'limit'), 
    	new SoapParam("is:unread", 'query'));
    	
    try {
        echo "creating header<br>";
        $soapHeader = new SoapHeader(
                    'urn:zimbra',
                    'context',
                    new SoapVar('<ns2:context><authToken>' . $authToken . '</authToken></ns2:context>', XSD_ANYXML)
                    );

        echo "trying<br>";
        $result = $client->__soapCall(
                    "SearchRequest",
                    $params,
                    $options,
                    $soapHeader
        );
        echo "executed<br>";
    } catch (SoapFault $exception) {
        echo "exception caught<br><br>";
        echo print_nice($client->__getLastRequest()) . "<br><br>";
        echo print_nice($client->__getLastRequestHeaders()) . "<br><br>";
        echo print_nice($client->__getLastResponseHeaders()) . "<br><br>";
        echo print_nice($client->__getLastResponse()) . "<br><br>";
        echo $exception . "<br><br>";
    }

    echo "done<br><br>";
    echo print_nice($client->__getLastRequest()) . "<br><br>";
    echo print_nice($client->__getLastResponse()) . "<br><br>";
?>