1,抓取无访问控制文件
<?php
$ch= curl_init();
curl_setopt($ch, CURLOPT_URL,"http://localhost/mytest/phpinfo.php");
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//如果把这行注释掉的话,就会直接输出
$result=curl_exec($ch);
curl_close($ch);
?>2,使用代理进行抓取
为什么要使用代理进行抓取呢?以google为例吧,如果去抓google的数据,短时间内抓的很频繁的话,你就抓取不到了。google对你的ip地址做限制这个时候,你可以换代理重新抓。
<?php
$ch= curl_init();
curl_setopt($ch, CURLOPT_URL,"http://blog.51yip.com");
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, TRUE);
curl_setopt($ch, CURLOPT_PROXY, 125.21.23.6:8080);
//url_setopt($ch, CURLOPT_PROXYUSERPWD, 'user:password');如果要密码的话,加上这个
$result=curl_exec($ch);
curl_close($ch);
?>3,post数据后,抓取数据
单独说一下数据提交数据,因为用 curl的时候,很多时候会有数据交互的,所以比较重要的。
立即学习“PHP免费学习笔记(深入)”;
<?php
$ch= curl_init();
/*在这里需要注意的是,要提交的数据不能是二维数组或者更高
*例如array('name'=>serialize(array('tank','zhang')),'sex'=>1,'birth'=>'20101010')
*例如array('name'=>array('tank','zhang'),'sex'=>1,'birth'=>'20101010')这样会报错的*/
$data=array('name'=>'test','sex'=>1,'birth'=>'20101010');
curl_setopt($ch, CURLOPT_URL,'http://localhost/mytest/curl/upload.php');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,$data);
curl_exec($ch);
?>在 upload.php文件中,print_r($_POST);利用curl就能抓取出upload.php输出的内容Array ( [name] => test [sex] => 1 [birth] => 20101010 )
4,抓取一些有页面访问控制的页面
本书将PHP开发与MySQL应用相结合,分别对PHP和MySQL做了深入浅出的分析,不仅介绍PHP和MySQL的一般概念,而且对PHP和MySQL的Web应用做了较全面的阐述,并包括几个经典且实用的例子。 本书是第4版,经过了全面的更新、重写和扩展,包括PHP5.3最新改进的特性(例如,更好的错误和异常处理),MySQL的存储过程和存储引擎,Ajax技术与Web2.0以及Web应用需要注意的安全
400
以前写过一篇,页面访问控制的3种方法有兴趣的可以看一下。
如果用上面提到的方法抓的话,会报以下错误
You are not authorized to view this page
Youdonot have permission to view this directoryorpage using the credentials that you supplied because your Web browser is sending a WWW-Authenticate header field that the Web server is not configured to accept.
这个时候,我们就要用CURLOPT_USERPWD来进行验证了
<?php
$ch= curl_init();
curl_setopt($ch, CURLOPT_URL,"http://club-china");
/*CURLOPT_USERPWD主要用来破解页面访问控制的
*例如平时我们所以htpasswd产生页面控制等。*/
//curl_setopt($ch, CURLOPT_USERPWD, '231144:2091XTAjmd=');
curl_setopt($ch, CURLOPT_HTTPGET, 1);
curl_setopt($ch, CURLOPT_REFERER,"http://club-china");
curl_setopt($ch, CURLOPT_HEADER, 0);
$result=curl_exec($ch);
curl_close($ch);
?>5,模拟登录到sina
我们要抓取数据,可能是登录以后的内容,这个时候我们就要用到curl的模拟登录功能了。
<?php
functionchecklogin($user,$password)
{
if( emptyempty($user) || emptyempty($password) )
{
return0;
}
$ch= curl_init( );
curl_setopt($ch, CURLOPT_REFERER,"http://mail.sina.com.cn/index.html");
curl_setopt($ch, CURLOPT_HEADER, true );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true );
curl_setopt($ch, CURLOPT_USERAGENT, USERAGENT );
curl_setopt($ch, CURLOPT_COOKIEJAR, COOKIEJAR );
curl_setopt($ch, CURLOPT_TIMEOUT, TIMEOUT );
curl_setopt($ch, CURLOPT_URL,"http://mail.sina.com.cn/cgi-bin/login.cgi");
curl_setopt($ch, CURLOPT_POST, true );
curl_setopt($ch, CURLOPT_POSTFIELDS,"&logintype=uid&u=".urlencode($user)."&psw=".$password);
$contents= curl_exec($ch);
curl_close($ch);
if( !preg_match("/Location: (.*)\/cgi\/index\.php\?check_time=(.*)
/",$contents,$matches) )
{
return0;
}else{
return1;
}
}
define("USERAGENT",$_SERVER['HTTP_USER_AGENT'] );
define("COOKIEJAR", tempnam("/tmp","cookie") );
define("TIMEOUT", 500 );
echochecklogin("zhangying215","xtaj227");
?>
打开/tmp下面的cookie文件看一下
# Netscape HTTP Cookie File
# http://curl.haxx.se/rfc/cookie_spec.html
# This file was generated by libcurl! Edit at your own risk.
mail.sina.com.cn FALSE / FALSE 0 SINAMAIL-WEBFACE-SESSID 65223c4bd8900284ed463d2a3e1ac182
#HttpOnly_.sina.com.cn TRUE / FALSE 0 SUE es%3D8d96db0820c6c79922ad57d422f575e8%26ev%3Dv0%26es2%3Dcddfb8400dc5ca95902367ddcd7f57dd
.sina.com.cn TRUE / FALSE 0 SUP cv%3D1%26bt%3D1286900433%26et%3D1286986833%26lt%3D1%26uid%3D1445632344%26user%3D%25E5%25BC%25A0%25E6%2598%25A02001%26ag%3D2%26name%3Dzhangying20015%2540sina.com%26nick%3D%25E5%25BC%25A0%25E6%2598%25A02001%26sex%3D1%26ps%3D0%26email%3Dzhangying20015%2540sina.com%26dob%3D1982-07-18
#HttpOnly_.sina.com.cn TRUE / FALSE 0 SID BihcallomxMx-QZxzGrOlcSQx%2F0B%2F0cmr.NyQ%2F0B%2FcmGGalmarlmcHrcGlSmrmxmfxal_CBZ%2F_afugCmmGirBYHm0Bc%40fr5ciZiGG5i
#HttpOnly_.sina.com.cn TRUE / FALSE 0 SPRIAL bfb4102951fd5892a3fd5b42d442cd26
#HttpOnly_.sina.com.cn TRUE / FALSE 0 SINA_USER %D5%C5%D2001
PHP怎么学习?PHP怎么入门?PHP在哪学?PHP怎么学才快?不用担心,这里为大家提供了PHP速学教程(入门到精通),有需要的小伙伴保存下载就能学习啦!
Copyright 2014-2025 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号