php的curl抓包

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Release: 2016-06-23 13:29:46
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在PHP中实现抓包有两种方式,一个是使用file_get_contents()函数采集页面内容,另一种就是curl

CURL请求过程

curl完成请求主要是分为以下四步:
1、初始化,创建一个新的curl资源(即:curl_init())
2、设置URL和相应的选项(即:curl_setopt() )
3、抓取URL并把它传递给浏览器(即:curl_exec())
4、关闭curl资源,并且释放系统资源(即:curl_close())

CURL提交get请求

curl抓包最简单的一个例子,抓取页面内容(按着上面的四个步骤):        $init = curl_init();        $url = "http://xiongchao.net.cn/";        curl_setopt($init,CURLOPT_URL,$url);        $res = curl_exec($init);        curl_close($init);        echo $res;注:第二步只最关键的一部分,在这里可以设置一些高级选项,例如:CURLOPT_HEADER,CURLOPT_POST等选项curl_setopt()的参数介绍:  [http://php.net/manual/zh/function.curl-setopt.php](http://php.net/manual/zh/function.curl-setopt.php)
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CURL提交post请求

<html>    <head>        <meta charset=gbk>    </head>    <body>        <form action="" method="post">            账号:<input type="text" name="user">        <br>            密码:<input type="password" name="password">        <br>        <input type="submit" name="login" value="登录">        </form>    </body><?php if($_POST){ $login = $_POST["user"]; $password = $_POST["password"]; $url = "http://xiongchao.net.cn/admin.php/Login/do_login"; $fields = "login_name=".$login."&password=".$password; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch,CURLOPT_HEADER,0);//设置header 1:输出header信息 0:不输出header信息 curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);//要求结果为字符串且输出到屏幕上 curl_setopt($ch,CURLOPT_POST,1); curl_setopt($ch, CURLOPT_POSTFIELDS, $fields); $result = curl_exec($ch); curl_close($ch); echo $result; } ?></html>
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请求的结果如下图:

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