search engine result page using curl php

Configuration script which will have domain, function for url validate and check the keywords. <?php define("domain","http://www.google.com"); function getValidateLink($url) { if(!filter_var($url, FILTER_VALIDATE_URL,FILTER_FLAG_QUERY_REQUIRED)) { echo domain.$url; } } $strKeywords = ''; if(isset($_GET["q"])) { $strKeywords = (isset($_GET["q"])) ? $_GET["q"] : "codeasearch.com"; } ?>