How to crawl Baidu pages and corresponding strings in php
This article mainly introduces the method of php to obtain Baidu included, Baidu hot words and Baidu snapshots. It analyzes the techniques of php to capture Baidu pages and corresponding string analysis with examples. It is of great practical value. Friends who need it can refer to it.
The example in this article describes the method of using PHP to obtain Baidu included, Baidu hot words and Baidu snapshots. The details are as follows:
Get Baidu included:
<?php
/*
抓取百度收录代码
*/
function baidu($s){
$baidu="http://www.baidu.com/s?wd=site%3A".$s;
$site=file_get_contents($baidu);
//$site=iconv("gb2312", "UTF-8", $site);
ereg("找到相关网页(.*)篇，", $site,$count);
$count=str_replace("找到相关网页","",$count);
$count=str_replace("篇，","",$count);
$count=str_replace("约","",$count);
$count=str_replace(",","",$count);
return $count[0];
}
echo baidu(www.jb51.net);
//获取脚本之家在百度中的收录数量
?>Get Baidu’s hot words
<?php
/**
* @return array 返回百度的热词数据(数组返回)
*/
function getBaiduHotKeyWord()
{
$templateRss = file_get_contents('http://top.baidu.com/rss_xml.php?p=top10');
if (preg_match('/<table>(.*)<\/table>/is', $templateRss, $_description)) {
$templateRss = $_description [0];
$templateRss = str_replace("&", "&", $templateRss);
}
$templateRss = "<?xml version=1.0 encoding=GBK?>" . $templateRss;
$xml = @simplexml_load_String($templateRss);
foreach ($xml->tbody->tr as $temp) {
if (!empty ($temp->td->a)) {
$keyArray [] = trim(($temp->td->a));
}
}
return $keyArray;
}
print_r(getBaiduHotKeyWord());This is what I found online and was slightly modified. Write the following code into the php file
Baidu included and Baidu snapshot time
<?php
$domain = "//www.jb51.net/"; *欲查询的域名*/
$site_url = 'http://www.baidu.com/s?wd=site%3A';
$all = $site_url.$domain; /*域名所有收录的网址*/
$today = $all.'&lm=1'; /*域名今日收录的网址*/
$utf_pattern = "/找到相关结果数(.*)个/";
$kz_pattern = "/<span class="g">(.*)</span>/"; /*用以匹配快照日期的字符串*/
$times = "/d{4}-d{1,2}-d{1,2}/"; /*匹配快照日期的正则表达式，如:2011-8-4*/
$s0 = @file_get_contents($all); /*将site:www.jb51.net的网页置入$s0字符串中*/
$s1 = @file_get_contents($today);
preg_match($utf_pattern,$s0,$all_num); /*匹配"找到相关结果数*个"*/
preg_match($utf_pattern,$s1,$today_num);
preg_match($kz_pattern,$s0,$temp);
preg_match($times,$temp[0],$screenshot);
if($all_num[1] == "")
$all_num[1] = 0;
if($today_num[1] == "")
$today_num[1] = 0;
if($screenshot[0] == "")
$screenshot[0] = "暂无快照";
?>
<html>
<head>
<title>Test</title>
</head>
<body>
<table>
<tr>
<td>日期</td><td>百度收录</td><td>百度今日收录</td><td>百度快照日期</td>
</tr>
<tr>
<td><?php echo date('m月d日G时');?> </td><td>
<?php echo $all_num[1]; ?></td><td>
<?php echo $today_num[1]; ?></td><td>
<?php echo $screenshot[0]; ?></td>
</tr>
</table>
<p>百度收录：<a href="<?php echo $all; ?>" target="_blank">
<?php echo $all_num[1]; ?></a></p>
<p>百度今日收录：<a href="<?php echo $today; ?>" target="_blank">
<?php echo $today_num[1]; ?></a></p>
<p>百度快照日期：<a href="<?php echo $all; ?>">
<?php echo $screenshot[0]; ?></a></p>
</body>
</html>Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.
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The above is the detailed content of How to crawl Baidu pages and corresponding strings in php. For more information, please follow other related articles on the PHP Chinese website!
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