expl0it

Hello there, Im having a few problems with this. firstly my code: <?php $file = "http://www.eve-markets.net/xml.php?listid=2363&key=v6UWzelPkcDrUjj"; function contents($parser, $data){ echo $data; } function startTag($parser, $data){ echo "<b>"; } function endTag($parser, $data){ echo "</b><br />"; } $xml_parser = xml_parser_create(); xml_set_element_handler($xml_parser, "startTag", "endTag"); xml_set_character_data_handler($xml_parser, "contents"); $fp = fopen($file, "r"); $data = fread($fp, 80000); if(!(xml_parse($xml_parser, $data, feof($fp)))){ die("Error on line " . xml_get_current_line_number($xml_parser)); } xml_parser_free($xml_parser); fclose($fp); ?> xml sheet:http://www.eve-markets.net/xml.php?listid=2363&key=v6UWzelPkcDrUjj i only want to parse the information between <buy> </buy> but im not too sure how to do this, Anyone help please?