玩过WORDPRESS的朋友应该都知道ping服务吧，通俗点讲它可以在更新文章的时候向Google、baidu及其他支持ping的搜索引擎发送指令然后招呼它们过来，不用傻等他们过来收录了，化被动为主动了。直接贴代码了，很简单的。

谷歌说明文档：https://www.google.com/intl/zh-CN/help/blogsearch/pinging_API.html

baidu 说明文档：http://help.baidu.com/question?prod_en=master&class=478&id=3046

/**+------------------------------------------------------------------------------* 通知搜索引擎过来抓去最新发布的内容。秒收不是梦* 目前仅支持Google和Baidu+------------------------------------------------------------------------------*/
class ping {public $method, $callback;public function method($site_name, $site_url, $update_url, $update_rss) {$this->method = "<?xml version="1.0" encoding="UTF-8"?><methodCall><methodName>weblogUpdates.extendedPing</methodName><params><param><value>{$site_name}</value></param><param><value>{$site_url}</value></param><param><value>{$update_url}</value></param><param><value>{$update_rss}</value></param></params></methodCall>";return $this->method;}public function _post($url, $postvar) {$ch = curl_init();$headers = array("POST " . $url . " HTTP/1.0","Content-type: text/xml;charset="utf-8"","Accept: text/xml","Content-length: " . strlen($postvar));curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_POST, 1);curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);curl_setopt($ch, CURLOPT_POSTFIELDS, $postvar);$res = curl_exec($ch);curl_close($ch);return $res;}public function google() {$this->callback = $this->_post('http://blogsearch.google.com/ping/RPC2', $this->method);return strpos($this->callback, "<boolean>0</boolean>") ? true : false;}public function baidu() {$this->callback = $this->_post('http://ping.baidu.com/ping/RPC2', $this->method);return strpos($this->callback, "<int>0</int>") ? true : false;}}