我有以下函數來獲取Googlebot的最後訪問日期:我怎樣才能獲得Google bot上次訪問該頁面的時間?
//get googlebot last access
function googlebot_lastaccess($domain_name)
{
$request = 'http://webcache.googleusercontent.com/search?hl=en&q=cache:'.$domain_name.'&btnG=Google+Search&meta=';
$data = getPageData($request);
$spl=explode("as it appeared on",$data);
//echo "<pre>".$spl[0]."</pre>";
$spl2=explode(".<br>",$spl[1]);
$value=trim($spl2[0]);
//echo "<pre>".$spl2[0]."</pre>";
if(strlen($value)==0)
{
return(0);
}
else
{
return($value);
}
}
echo "Googlebot last access = ".googlebot_lastaccess($domain_name)."<br />";
function getPageData($url) {
if(function_exists('curl_init')) {
$ch = curl_init($url); // initialize curl with given url
curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // add useragent
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // write the response to a variable
if((ini_get('open_basedir') == '') && (ini_get('safe_mode') == 'Off')) {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); // follow redirects if any
}
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); // max. seconds to execute
curl_setopt($ch, CURLOPT_FAILONERROR, 1); // stop when it encounters an error
return @curl_exec($ch);
}
else {
return @file_get_contents($url);
}
}
但這個腳本打印我作爲導致整個頁面的屏幕,即快照。整個頁面緩存在谷歌,但我只想捕獲文字as it appeared on
後的日期時間,並打印它即:8 Oct 2011 14:03:12 GMT
。
如何?
我不知道是否有來自谷歌的任何API來獲取值... – Raptor