Are there any specific guidelines for passing XML data as a string instead of an array in nusoap?

When passing XML data as a string instead of an array in nusoap, you can simply encode the XML data as a string and pass it as a parameter. This can be useful when dealing with complex XML structures or when you need to pass XML data as a single parameter.

// Encode the XML data as a string
$xmlData = '<example><data>123</data></example>';

// Pass the XML data as a string parameter
$client->call('yourMethod', array('xmlData' => $xmlData));