phpCURL抓取网页内容

参考代码1：<?php
// 创建一个新cURL资源
$ch = curl_init();
// 设置URL和相应的选项
curl_setopt($ch, CURLOPT_URL, "http://www.baidu.com/");
curl_setopt($ch, CURLOPT_HEADER, false);
// 抓取URL并把它传递给浏览器
$data = curl_exec($ch);
echo $data;
//关闭cURL资源，并且释放系统资源
curl_close($ch);
?>

参考代码2：<?php
$szUrl = "http://www.baidu.com/";
$UserAgent = 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; .NET CLR 3.5.21022; .NET CLR 1.0.3705; .NET CLR 1.1.4322)';
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $szUrl);
curl_setopt($curl, CURLOPT_HEADER, 0);  //0表示不输出Header，1表示输出
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_ENCODING, '');
curl_setopt($curl, CURLOPT_USERAGENT, $UserAgent);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
$data = curl_exec($curl); 
echo $data;
//echo curl_errno($curl); //返回0时表示程序执行成功 如何从curl_errno返回值获取错误信息
exit();
?>

<?php
$post_data = array (
"log" => "admin",
"pwd" => "xxxxxxxx",//密码就不公开了
"__token__"=>"7c57b81907b63f46500ce1910396485d"
);
$cookie_jar = tempnam('./','cookie');//新建cookie文件
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://域名/wp-login.php?loggedout=true&wp_lang=zh_CN");//域名也不公开了
//设定返回的数据是否自动显示
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
// 我们在POST数据哦！
curl_setopt($ch, CURLOPT_POST, 1);
// 把post的变量加上
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
//把返回来的cookie信息保存在$cookie_jar文件中
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
echo curl_exec($ch);
curl_close($ch);

$ch2 = curl_init();
curl_setopt($ch2, CURLOPT_URL, "http://域名/wp-admin/");
curl_setopt($ch2, CURLOPT_HEADER, false);
curl_setopt($ch2, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch2, CURLOPT_COOKIEFILE, $cookie_jar);
echo curl_exec($ch2);
unlink($cookie_jar);
curl_close($ch2);



?>