What potential pitfalls should be avoided when working with nusoap in PHP to ensure efficient parsing of SOAP responses?

One potential pitfall to avoid when working with nusoap in PHP is inefficient parsing of SOAP responses, which can lead to slow performance and high resource usage. To ensure efficient parsing, it is important to properly handle and process the SOAP response data by using built-in nusoap functions and methods.

// Example of efficient parsing of SOAP response using nusoap
$client = new nusoap_client('http://example.com/soap_server.php');
$response = $client->call('get_data', array('param1' => 'value1'));

// Check if the response is valid before processing
if ($client->fault) {
    echo 'Error: '.$response;
} else {
    // Process the response data efficiently
    $parsed_data = $response['data'];
    // Further processing of parsed data
}