latest pinterest feed using their simple rss feed transcoded to json.

gistfile1.php

<?php
class XmlToJson {
  public function Parse( $url ) {
    $fileContents = file_get_contents( $url );
    $fileContents = str_replace( array(
      "\n",
      "\r",
      "\t"
    ), '', $fileContents );
    $fileContents = trim( str_replace( '"', "'", $fileContents ) );
    $simpleXml = simplexml_load_string( $fileContents );
    $json = json_encode( $simpleXml );
    return $json;
  }
}

function msh_pinterest() {
  $xml   = new XmlToJson;
  $feed  = json_decode( $xml->Parse( "http://pinterest.com/pinterest/feed.rss" ) );
  $items = $feed->channel->item;

  foreach( $items as $item ) :
    printf( '%s', $item->description );
  endforeach;
}