This article mainly introduces the methods of reading PHP pages and regular matching. Friends who are interested can refer to it. I hope it will be helpful to everyone.
The details are as follows:
<html> <head> <title>在线演示_php获取某网站的快照时间</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="keywords" content="百度,baidu,查询快照结果"> <meta name="description" content="php查询网站快照日期: "> </head> <body> <?php $k=isset($_POST['k'])?$_POST['k']:''; ?> <form method="post" action=""> <h2>查询网站快照日期:</h2> 输入网址:<br /> http://<input type="text" name="k" size="60" value="<?php echo $k ?>"> <input type="submit" value="提交"> </form> <?php /* php获取某网站的快照时间 by enenba 2012-6-18 @param str $url 一级域名 @param str 时间格式 */ function getKuaiZhao($text) { $url = 'http://www.baidu.com/s?word='.$text; $html = file_get_contents($url); $text = str_replace('.','\.',addslashes($text)); $search = '/<b>'.$text.'<\/b>[^<]*((?:19|20)[0-9]{2}-(?:1[012]|[1-9])-(?:[12][0-9]|3[01]|[1-9]))/'; preg_match($search, $html, $r); //highlight_string($search); return $r[1]; } if($k=='') { echo('请输入url'); }else{ if($r = getKuaiZhao($k)) { echo '快照:'.$r; }else { echo('无快照'); } } ?> </body> </html>
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