Amazon Web Services: A Brief Introduction Using PHP

<Details url="http://www.amazon.com/exec/obidos/ASIN/0764519832/[Your Associates ID]?dev-t=[Your developer token]%26camp=2025%26link_code=xm2">
<Asin>0764519832</Asin>
<ProductName>The Unofficial Guide to Las Vegas 2004</ProductName>
<ImageUrlSmall>http://images.amazon.com/images/P/0764519832.01.THUMBZZZ.jpg</ImageUrlSmall>
<Availability>Usually ships within 24 hours</Availability>
<ListPrice>$17.99</ListPrice>
<OurPrice>$12.59</OurPrice>
</Details>

<?php
// --- Amazon Web Services Simple Example ---

/**
* XML Link:
* Lite BrowseNode search for Las Vegas Travel Books sorted by Featured Item, Page 1
*
* REMEMBER to add you Associates ID and Developer Token
*/
$xmlFeed = 'http://xml.amazon.com/onca/xml3?t=[Your Associates ID]&dev-t=[Your Developer Token]&BrowseNodeSearch=17359&mode=books&sort=+pmrank&offer=All&type=lite&page=1&f=xml';

$data = @implode("",file($xmlFeed));

$parser = xml_parser_create();
xml_parser_set_option($parser,XML_OPTION_SKIP_WHITE,1);
xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING,0);
xml_parse_into_struct($parser,$data,$d_ar,$i_ar);
xml_parser_free($parser);

/**
* The XML data is broken up into the two arrays,
* $d_ar and $i_ar, now we can loop through
* the arrays to display the data on our website:
*/

for($i=0; $i<count($i_ar['Details']); $i++) {
  if($d_ar[$i_ar['Details'][$i]]['type']=='open') {
    for($j=$i_ar['Details'][$i]; $j<$i_ar['Details'][$i+1]; $j++) {

/**
* Assign the data to a variable;
* to include more tags, add extra elseif statements
*/
      if($d_ar[$j]['tag'] == 'ProductName'){
        $ProductName = $d_ar[$j]['value'];
      }elseif($d_ar[$j]['tag'] == 'OurPrice'){
        $OurPrice = $d_ar[$j]['value'];
      }
    }

// --- Display the product's name and price ---

    echo '<strong>' .$ProductName. '</strong> <em>Price: ' .$OurPrice. '</em><br />';
  }
}
?>