Answered Problems with makeUrl

$url = $modx->makeUrl(25, '', array('hello' => 'world'));

$url = $modx->makeUrl(25, '', 'hello=world');

$url = $modx->makeUrl(25, '', array('hello' => 'world', 'foo' => 'bar'));

$url = $modx->makeUrl(25, '', array('hello' => $world, 'foo' => $bar));

$url = $modx->makeUrl(25, '', 'hello='.$world);

$url = $modx->makeUrl(25, '', 'hello={$world}');

$modx->sendRedirect($url);

$url = $modx->makeUrl(25, '', array('hello' => 'world', 'foo' => 'bar'));

$world = 'world';
$bar = 'bar';
$url = $modx->makeUrl(25, '', array('hello' => $world, 'foo' => $bar));

$title = $modx->runSnippet('getCarVars', array('get'=>'pagetitle'));
    $price = $modx->runSnippet('getCarVars', array('get'=>'price'));
    $img = $modx->runSnippet('getCarVars', array('get'=>'img'));

$output = "";

    switch($get){
        case "pagetitle":
            $output .= $_GET['pagetitle'];
            break;
        case "price":
            $output .= $_GET['price'];
            break;
        case "img":
            $output .= $_GET['carimage'];
            break;
    }
    
    return $output;

$url = $modx->makeUrl(17,'',array('pagetitle' => $title, 'price' => $price, 'carimage' => $img));

/**
 * getReqParam
 *
 * Copyright 2010 by Shaun McCormick <[email protected]>
 *
 * getReqParam is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * getReqParam is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * getReqParam; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * @package getreqparam
 */
/**
 * Returns a parameter from the php request object or other globals.
 *
 * @author Shaun McCormick <[email protected]>
 * @license GPLv2
 * @param string $name The name of the variable.
 * @param string $type The type of request. Defaults to GET.
 * @package getreqparam
 *
 * Works with Revolution 2.0.0.
 */
if (empty($modx) || empty($scriptProperties['name']) || empty($scriptProperties['type'])) return null;

$name = $scriptProperties['name'];
$type = !empty($scriptProperties['type']) ? $scriptProperties['type'] : 'GET';

switch ($type) {
    case 'SERVER':
        return isset($_SERVER[$name]) ? $_SERVER[$name] : null;
        break;
    case 'POST':
        return isset($_POST[$name]) ? $_POST[$name] : null;
        break;
    case 'FILES':
        return isset($_FILES[$name]) ? $_FILES[$name] : null;
        break;
    case 'COOKIE':
        return isset($_COOKIE[$name]) ? $_COOKIE[$name] : null;
        break;
    case 'SESSION':
        return isset($_SESSION[$name]) ? $_SESSION[$name] : null;
        break;
    case 'REQUEST':
        return isset($_REQUEST[$name]) ? $_REQUEST[$name] : null;
        break;
    case 'GET':
    default:
        return isset($_GET[$name]) ? $_GET[$name] : null;
        break;
}
return null;

$title = $modx->runSnippet('getReqParam', array('name'=>'pagetitle'));
    $price = $modx->runSnippet('getReqParam', array('name'=>'price'));
    $img = $modx->runSnippet('getReqParam', array('name'=>'img'));

$title = $modx->getOption('pagetitle',$_REQUEST,'');
$price = $modx->getOption('price',$_REQUEST,'');
$img = $modx->getOption('img',$_REQUEST,'');

    $carId = $modx->runSnippet('getReqParam', array('name'=>'id'));
    $carResource = $modx->getObject('modResource', $carId);
    $title = $carResource->get('pagetitle');
    $price = $carResource->getTVValue('price');
    $img = $carResource->getTVValue('home-img');
    $url = $modx->makeUrl(17,'',array('pagetitle' => $title, 'price' => $price, 'carimage' => $img));

$url = $modx->makeUrl(17,'web',array('pagetitle' => $title, 'price' => $price, 'carimage' => $img), 'full');