searchExternal.php calling code:
<?php
$common_baseHREF = "http://www.example.com/pricetapestry/";
$common_path = "/path/to/pricetapestry/";
$_GET["q"] = "Search Terms";
require($common_path."searchExternal.php");
?>
PriceTapestry.org equivalent:
[pto search="Search Terms"]