Using Marketo's SOAP API and AJAX to retrieve information about a lead

PHP web serivcecode

<?php
/* *********************************************************************************
*  Marketo SOAP API get lead web service
*  *********************************************************************************
*
* test string
* curl -v -d "type=email&data=test@example.com" http://example.com/ws-marketo-getlead.php
*/
// load the Marketo SOAP class
include_once($_SERVER['DOCUMENT_ROOT'] . '/include/class.marketoapi.php');

// Helper method to get a string description for an HTTP status code
// From http://www.gen-x-design.com/archives/create-a-rest-api-with-php/
function getStatusCodeMessage($status) {
    $codes = Array(
        100 => 'Continue',
      101 => 'Switching Protocols',
        200 => 'OK',
      201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content',
        300 => 'Multiple Choices',
      301 => 'Moved Permanently', 302 => 'Found', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 306 => '(Unused)', 307 => 'Temporary Redirect',
    400 => 'Bad Request',
      401 => 'Unauthorized', 402 => 'Payment Required', 403 => 'Forbidden', 404 => 'Not Found', 405 => 'Method Not Allowed', 406 => 'Not Acceptable', 407 => 'Proxy Authentication Required', 408 => 'Request Timeout',
      409 => 'Conflict', 410 => 'Gone', 411 => 'Length Required', 412 => 'Precondition Failed', 413 => 'Request Entity Too Large', 414 => 'Request-URI Too Long', 415 => 'Unsupported Media Type',
      416 => 'Requested Range Not Satisfiable', 417 => 'Expectation Failed',
        500 => 'Internal Server Error',
      501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Timeout', 505 => 'HTTP Version Not Supported'
    );
    return (isset($codes[$status])) ? $codes[$status] : '';
}

// Helper method to send a HTTP response code/message
function sendResponse($status = 200, $body = '', $content_type = 'text/html') {
    $status_header = 'HTTP/1.1 ' . $status . ' ' . getStatusCodeMessage($status);
    header($status_header);
    header('Content-type: ' . $content_type);
    echo $body;
}

class MarketoGetLeadService {
    // Main method to fetch data from Marketo via SOAP
    function get_lead() {
    $LeadType  ='';
    $LeadValue ='';
    $req_type  = '';
    $req_data  = '';
    if (isset($_REQUEST['type'])) {
      $req_type = $_REQUEST['type'];
      if (isset($_REQUEST['data'])) {
        $req_data  = $_REQUEST['data'];
        if ($req_type == 'email' || $req_type == 'cookie' || $req_type == 'marketoid' || $req_type == 'sfdcleadid' || $req_type == 'sfdccontactid') {
          switch ($req_type) {
            case 'email':
              $LeadType   = 'EMAIL';
              if(preg_match("/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/", $req_data)) {
                $LeadValue = $req_data;
              }
              break;
            case 'cookie':
              $LeadType   = 'COOKIE';
              if (isset($_GET['data']) || isset($_POST['data'])) {
                $LeadValue =  urldecode($req_data);
              } elseif (isset($_COOKIE['_mkto_trk'])) {
                $LeadValue = $_COOKIE['_mkto_trk'];
              }
              break;
            case 'marketoid':
              $LeadType   = 'IDNUM';
              $LeadValue = $req_data;
              break;
            case 'sfdcleadid':
              $LeadType   = 'SFDCLEADID';
              $LeadValue = $req_data;
              break;
            case 'sfdccontactid':
              $LeadType   = 'SFDCCONTACTID';
              $LeadValue = $req_data;
              break;
            default:
              $LeadType   = '';
              $LeadValue  = '';
          }
          if ((strlen($LeadType) > 0) && (strlen($LeadValue) > 0)) {
            $marketo_api = new MarketoAPI();
            try {
              $result = $marketo_api->getLead_with_exception($LeadType, $LeadValue);
              // If the response looks valid we check for a valid email address in the response.
              if (TRUE === $marketo_api->doesResponseLookValid($result)){
                sendResponse(200, json_encode($result->result->leadRecordList->leadRecord));
                return true;
              }
              // either returns $result as false or sends an email
              sendResponse(400, json_encode($result));
              return false;
            }
            catch (Exception $e) {
              if (isset($e->detail->serviceException->code) && $e->detail->serviceException->code == '20103') {
                // Code 20103 means the LeadKey value did not match any lead
                sendResponse(400, json_encode($e->detail));
                return false;
              } else {
                // other error types
                sendResponse(400, json_encode($e));
                return false;
              }
            }
          } else {
            $data = array('result' => false, 'reason' => 'no valid key value (data) provided');
            sendResponse(400, json_encode($data));
            return false;
          }
        } else {
          $data = array('result' => false, 'reason' => 'no valid lead key found');
          sendResponse(400, json_encode($data));
          return false;
        }
      } else {
        $data = array('result' => false, 'reason' => 'no key type specified');
        sendResponse(400, json_encode($data));
        return false;
      }
    }
  }
}
// This is the first thing that gets called when this page is loaded
// Creates a new instance of the MarketoGetLeadService class and calls the get_lead method
$api = new MarketoGetLeadService;
$api->get_lead();
?>
	

jQuery code

<script type="text/javascript" language="Javascript" src="
function getLead(type, leadkey){
  var lead = new Object();
  jQuery('#LeadTable').html('... requesting data ...');
  jQuery.ajax({
    type:   'POST',
    url:    'http://example.com/ws-marketo-getlead.php',
    data:   'type=' + type + '&' + ((type == 'cookie')?'data=' + escape(leadkey) : 'data=' + leadkey),
    async:  false,
    cache:  false,
    success: function(data, status, xhr){
      lead.json     = data;
      try {
        lead.key      = JSON.parse(data);
        lead.status   = 200;
        lead.response = 'Ok';
        lead.error    = false;
      }
      catch (ex) {
        lead.key      = '';
        lead.status   = -1;
        lead.response = ex.message;
        lead.error    = true;
      }
    },
    error: function(xhr, status, error){
      lead.key      = '';
      lead.response = xhr.responseText;
      lead.status   = xhr.status;
      lead.error    = true;
    }
  });

  ... do something with the JSON string ...

  return false;
}
</script>