Haber no toy muy clarito con el tema....la idea tuya es buscar productos con XML....mira qe yo tengo un codigo para buscar diferentes productos a travéz de Mercado Libre...
Código PHP:
<?
# ID 213525
# En La inea 114 Va este numero "213525" que es nuestro site ID
//Variable de URL as_categ_id
$id_categ=$HTTP_GET_VARS[as_categ_id];
if ($HTTP_GET_VARS[as_categ_id]=="") { $id_categ="1000"; }
//Variable de URL buscar
$buscar=$HTTP_GET_VARS[buscar];
//Variable de URL pais (MLA,MLB,etc)
$pais=strtoupper($HTTP_GET_VARS[pais]);
//Elije el dominio de MercadoLibre
switch ($pais) {
case "MLA":
$dominio="www.mercadolibre.com.ar";
break;
case "MLB":
$dominio="www.mercadolivre.com.br";
break;
case "MLM":
$dominio="www.mercadolibre.com.mx";
break;
case "MLC":
$dominio="www.mercadolibre.cl";
break;
case "MLV":
$dominio="www.mercadolibre.com.ve";
break;
case "MCO":
$dominio="www.mercadolibre.com.co";
break;
case "MLU":
$dominio="www.mercadolibre.com.uy";
break;
case "MEC":
$dominio="www.mercadolibre.com.ec";
break;
case "MLP":
$dominio="www.mercadolibre.com.pe";
break;
default:
$dominio="www.mercadolibre.cl";
}?>
<html>
<head>
<title>Articulos en Mercadolibre</title>
<link href="http://www.ceatolei.cl/estiloml.css" rel="stylesheet" type="text/css">
</head>
<body>
<dl>
<table width="120" heigh ="600" border="0" cellpadding="0" cellspacing="0">
<?php
$insideitem = false;
$item = array();
$tag = "";
$title = "";
$description = "";
$link = "";
$price = "";
$image="";
$currency= "";
function startElement($parser, $name, $attrs) {
global $insideitem, $tag, $title, $description, $link, $price, $image, $currency, $item;
if ($insideitem) {
$tag = $name;
} elseif ($name == "ITEM") {
$insideitem = true;
}
}
function endElement($parser, $name) {
global $insideitem, $tag, $title, $description, $link, $price, $image, $currency, $item, $attrs;
if ($name == "ITEM") {
echo "<tr>";
echo "<td><div align=\"center\"><img src=\"".$image."\" height=\"59\"></div>";
echo "<div align=\"center\"><a href=\"".$link."\" target=\"_blank\">".substr($title,0,55)."</a></div><div align=\"center\"><font class=\"precio\">".$currency.$price."</font></div></td>";
echo "</tr>";
echo "<tr>";
echo "<td height=\"1\" bgcolor=\"#000000\"></td>";
echo "</tr>";
$title = "";
$description = "";
$link = "";
$price = "";
$item = "";
$image = "";
$currency = "";
$insideitem = false;
}
}
function characterData($parser, $data) {
global $insideitem, $tag, $title, $description, $link, $price, $image, $currency, $item, $attrs;
if ($insideitem) {
switch ($tag) {
case "ITEM":
$id .= $item['ID'];
break;
case "TITLE":
$title .= $data;
break;
case "DESCRIPTION":
$description .= $data;
break;
case "LINK":
$link .= str_replace("XXX","213525",$data);
break;
case "PRICE":
$price .= $data;
break;
case "IMAGE_URL":
$image .= $data;
break;
case "CURRENCY":
$currency .= $data;
break;
}
}
}
//========================================================
// Esta Sentencia Nos Muestra Los Articulos Mas Vendidos
//========================================================
$xml_parser = xml_parser_create();
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "characterData");
$fp = fopen("http://".$dominio."/jm/searchXml?as_categ_id=".$id_categ."&as_order_id=MAS_OFERTADOS&as_filtro_id=PRECIO_FIJO&as_display_type=G&as_qshow=2","r")
or die("Error reading data.");
while ($data = fread($fp, 4096))
xml_parse($xml_parser, $data, feof($fp))
or die(sprintf("XML error: %s at line %d",
xml_error_string(xml_get_error_code($xml_parser)),
xml_get_current_line_number($xml_parser)));
fclose($fp);
xml_parser_free($xml_parser);
?>
</table>
</dl>
</body>
</html>