use curl to get headers if get_headers is unable to use

gistfile1.aw

<?php
/**
*	Script to check link validity
*
*	@author Satya Prakash
*
*/

$links = array();
$links[] = 'http://www.satya-weblog.com/2007/04/dynamically-populate-select-list-by.html';
$links[] = 'http://www.satya-weblog.com/2009/11/setting-site-restriction-to-google-ajax-search-api.html';
$links[] = 'http://www.satya-weblog.com/2009/08/jquery-ajax-example-of-select-values.html';
$links[] = 'http://www.satya-weblog.com/2007/05/php-file-upload-and-download-script.html';
$links[] = 'http://www.satya-weblog.com/2008/02/header-for-xml-content-in-php-file.html';
$links[] = 'http://www.satya-weblog.com/2010/02/add-input-fields-dynamically-to-form-using-javascript.html';
$links[] = 'http://www.satya-weblog.com/2007/06/javascript-show-hide-div-p-input-or-any.html';
$links[] = 'http://www.satya-weblog.com/2007/05/php-and-javascript-cookie.html';
$links[] = 'http://goo.gl/IbKHP';

foreach ($links as $link) {

	$ch = curl_init($link);

	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_HEADER, 1); // return header
	curl_setopt($ch, CURLOPT_NOBODY, 1); // no body return. it will faster

	$linkHeaders = curl_exec($ch);
	$curlInfo = curl_getinfo($ch);
	curl_close($ch);

	switch(intval($curlInfo['http_code']/100)) {

		case 2:
			// Status is 2xx. Page is in correct health
			$status = 'OK';
			break;

		case 3:
			// Status is 3xx. It means redirection
			// Page has moved
			$status = 'MOVED';
			if (preg_match('@^Location: (.*)$@m', $linkHeaders, $matches)) {

				$location = trim($matches[1]);
				$status .= ": $location";
			}

			break;

		default:
			// any error
			$status = "Error: $curlInfo[http_code]";
			break;
	}

	echo "<p>
			$link: $status
		</p>
		";

}
?>