PHP中使用CURL（六）

curl常用的几个例子

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

<?php
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, "http://blog.snsgou.com");
 curl_setopt($ch, CURLOPT_HEADER, false);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
&nbsp;curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, TRUE);
&nbsp;curl_setopt($ch, CURLOPT_PROXY, 125.21.23.6:8080);
&nbsp;//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

<?php
$ch = curl_init();
$data = array('name' => 'test', 'sex' => 1);//array(1)
curl_setopt($ch, CURLOPT_URL, 'http://localhost/mytest/curl/userinfo.php');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_exec($ch);
?>

4、抓取一些有页面访问控制的页面

<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://club-china");
curl_setopt($ch, CURLOPT_USERPWD, '[username]:[password]');//破解页面访问控制
curl_setopt($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

<?php
function checkLogin($user, $password){
    if (empty($user) || empty($password)){
        return false;
    }
    $ch = curl_init();
    curl_setopt($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=(.*)\n/", $contents, $matches)){
        return false;
    }else{
        return true;
    }
}
define("USERAGENT", $_SERVER['HTTP_USER_AGENT']);
define("COOKIEJAR", tempnam("c:\windwos\temp", "cookie"));
define("TIMEOUT", 500);
echo checkLogin("username", "password");
?>

6、文件上传

<?php
/**
 * @param string $target_url 上传目标地址
 * @param string $filename 上传文件路径
 * @param string $form_name 表单名称
 */
function curlUploadFile($target_url, $filename, $form_name) {
    $upload_file = new CURLFile($filename);
    $post_data = array(
        $form_name => $upload_file
    );

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $target_url);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $result = curl_exec($ch);
    curl_close($ch);
}

$target_url = 'http://www.codean.net/notFound/test.php';
$filename = realpath("C:/Users/HelloWorld/Desktop/Images/1.jpg");
$form_name = 'file';

// 接收端使用$_FILES接受
curlUploadFile($target_url, $filename, $form_name);
?>

7、文件流上传

/*
 * 第三种写法，使用PHP流发送
 * @param string $target_url 上传目标地址
 */
function curlUploadFile($target_url) {
    $fh = fopen('php://temp', 'rw+');
    $string = 'Hello World';
    fwrite($fh, $string);
    rewind($fh);

    $ch =  curl_init();
    curl_setopt($ch, CURLOPT_URL, $target_url);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 2);
    curl_setopt($ch, CURLOPT_PUT, true);
    curl_setopt($ch, CURLOPT_INFILE, $fh);
    curl_setopt($ch, CURLOPT_INFILESIZE, strlen($string));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    $result = curl_exec($ch);
    curl_close($ch);
}
$target_url = 'http://www.codean.net/notFound/test.php';
curlUploadFile($target_url);

// 接收端取出流文件并保存
$putdata = fopen('php://input', 'r');
$fp = fopen('test.txt', 'w');
while ($data = fread($putdata, 1024)) {
    fwrite($fp, $data);
}
fclose($fp);
fclose($putdata);