phpcms发布时不自动提取keywords

<?php
defined('IN_PHPCMS') or exit('No permission resources.');
exit('');   //加这一行就OK
define('API_URL_GET_KEYWORDS', 'http://tool.phpcms.cn/api/get_keywords.php');
$number = intval($_GET['number']);
$data = $_POST['data'];
echo get_keywords($data, $number);
function get_keywords($data, $number = 3) {
$data = trim(strip_tags($data));
if(empty($data)) return '';
$http = pc_base::load_sys_class('http');
if(CHARSET != 'utf-8') {
$data = iconv('utf-8', CHARSET, $data);
} else {
$data = iconv('utf-8', 'gbk', $data);
}
$http->post(API_URL_GET_KEYWORDS, array('siteurl'=>SITE_URL, 'charset'=>CHARSET, 'data'=>$data, 'number'=>$number));
if($http->is_ok()) {
if(CHARSET != 'utf-8') {
return $http->get_data();
} else {
return iconv('gbk', 'utf-8', $http->get_data());
}
}
return '';
}
?>