PHP Barcde Webapp example using Scan2Shop for iOS or Android

<?php
require_once('wp-blog-header.php'); // ensures we can use Wordpress functions and db access
if(isset($_REQUEST['code'])):
    query_posts( array(
      'post_type' => 'post',
      'meta_key' => 'barcode',
      'meta_value' => $_REQUEST['code'],
      'meta_compare' => '='
    ) );
    if (have_posts()) :
        while (have_posts()) : the_post();
            $url = get_permalink() ;
            wp_redirect($url);
        endwhile;
    else :
        echo '<p style="font-size:64px;">No entry for game '.$_REQUEST["code"].' exists yet</p>';
    endif;
else:
    echo "<a href='p2spro://configure?lookup=http%3A//ipadboardgames.org/barcode.php?code=CODE'>Click here to configure your copy of scan2shop automatically</a>";
endif;
?>