Modified code here: http://forums.3dcart.com/32003-post2.html into a class. Thank you jeff :)

gistfile1.php

<?php
class Soap3d {
  //Ensures only the right data is passed into the soap call, incase I needed to add more into the construct $config variable
  private $whiteList = array(
    "storeUrl" => "",
    "userKey" => ""
  );
  //Stores the userKey, storeUrl and the soap connection
  private $conn = array();
  
  public function __construct($config) {
    $this->conn = array_intersect_key($config, $this->whiteList);
    $this->conn["db"] = new soapclient('http://api.3dcart.com/cart_advanced.asmx?WSDL',array('trace'=>1,'soap_version'=>SOAP_1_1));
  }
  
  public function query($sql) {
    //We only want storeUrl and userKey
    $queryData = array_intersect_key($this->conn, $this->whiteList);
    $queryData["sqlStatement"] = $sql;
  
    $result = $this->conn["db"]->runQuery($queryData);
    // parse results.  Return error code or array of results.
    if (is_soap_fault($result)) {
        $array['0'] = "Soap Fault";
        $array = array_merge($array, htmlspecialchars($result, ENT_QUOTES));
    } else {
      $pos = strpos($this->conn["db"]->__getLastResponse(), "Error");
      if ($pos == true) {
          $array['0'] =  "SQL Error: " . $this->conn["db"]->__getLastResponse();
      } else {
          // create an array from soap call.
          $netresult = $result->runQueryResult->any;
          $netresult = str_replace("<![CDATA[", '', $netresult);
          $netresult = str_replace("]]>", '', $netresult);			
          $array=json_decode(str_replace(':{}',':null', json_encode(simplexml_load_string($netresult,null,LIBXML_NOCDATA))),true);
      }
  	}
  	if (array_key_exists('0',$array)) {
  		return $array;
  	} elseif (array_key_exists('0',$array['runQueryRecord'])) {
  		return $array['runQueryRecord'];
  	} else {
  		$result_array['0'] = $array['runQueryRecord'];
  		return $result_array;
  	}
  }
  
  public function execute($sql, $callback) {
    $data = $this->query($sql);
    
    if ( is_array($data[0]) ) {
      foreach( $data as $key => $value ) $callback($value);
    } else {
      //SQL ERROR 
      //Guess you could put a callback here too, or just report an error.
    } 
  }
}

//Create an instance of the class
$d = new Soap3d(array(
  "storeUrl" => "xxxxxxx",
  "userKey" => "xxxxxxxx"
));

//Execute with callback
$d->execute("SELECT TOP 10 * FROM orders", function($data) {
  echo $data["orderid"] . "<br>";
});

//Or just run a query
$results = $d->query("UPDATE orders SET blahblah = 'thing' WHERE orderid = 123456789");
?>