Example Decal API request to build a list of Decal plan costs

step2_ex2.php

<?php
    require_once('curl_request.class.php');
    //update this to point to your install
    $url     = 'http://www.decalcms.com/index.php?h=DecalApi';
    $api_key = '597990c64261faa854805f6366f9dcc4f505ed0e';

    //formulate the post fields for the request
    //we'll look at the options in detail below
    $fields = array('api_key' => $api_key,
                    't'       => 'Home',
                    'numitems'  => '10',   //we only want one page per list
                    );

    //send off the request using the CurlRequest class
    $xml = simplexml_load_string(CurlRequest::toUrl($url)
    ->method(CurlRequest::POST)
    ->postFields($fields)
    ->execute());
    
    //The Decal home page has 2 types of component:
    //
    // - Plan Stack
    // - Plan Stack Feature
    //
    // The structure of each of these is fixed in the Decal template
    // so we can reliably work with it without exposing ourselves to
    // the normal brittleness of screen scraping
    
    foreach($xml->page[0]->xpath('.//component[contains(@name,"Plan stack")]') as $price)
    {   
        $dollars = $price->xpath('.//h3');
        $title   = $price->xpath('.//h4');
        echo $title[0].' costs: '.$dollars[0]->a.'<br />'.PHP_EOL;
    }