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How to crawl data from web pages in php

王林
王林Original
2019-09-20 11:53:117524browse

How to crawl data from web pages in php

#Detailed explanation of examples of grabbing web content in php

Method 1: Use the file_get_contents method to implement

 $url = "http://news.sina.com.cn/c/nd/2016-10-23/doc-ifxwztru6951143.shtml";
    $html = file_get_contents($url);
    //如果出现中文乱码使用下面代码
    //$getcontent = iconv("gb2312", "utf-8",$html);
    echo "<textarea style=&#39;width:800px;height:600px;&#39;>".$html."</textarea>";

Method 2: Use curl to achieve

$url = "http://news.sina.com.cn/c/nd/2016-10-23/doc-ifxwztru6951143.shtml";
    
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
$html = curl_exec($ch);
curl_close($ch);

echo "<textarea style=&#39;width:800px;height:600px;&#39;>".$html."</textarea>";
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
加上这句代码,表示如果请求被重定向时,可以访问到最终的请求页面,不然请求的结果会显示如下内容:
<head><title>Object moved</title></head>
<body><h1>Object Moved</h1>This object may be found <a href="some link." rel="external nofollow"

The above content is for reference only!

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