This can be done with file_get_contents()
and some regex processing. You must ensure you have fopen URL wrappers enabled in PHP.ini
You need to grab the page, then find unique string to parse on. This is to get the name:
<?php
$page = file_get_contents('http://agentquery.com/agent.aspx?agentid=13');
// name will be inside a span ctl00_Agent1_lblName, store it in $agent_name
preg_match("/<span id=\"ctl00_Agent1_lblName\".*span>/", $page, $agent_name);
// display agent name matches
print_r($agent_name);