php curl_init函数用法

<?php
// 初始化一个 cURL 对象
$curl = curl_init();
// 设置你需要抓取的URL
curl_setopt($curl, CURLOPT_URL, 'http://www.cmx8.cn');
// 设置header
curl_setopt($curl, CURLOPT_HEADER, 1);
// 设置cURL 参数，要求结果保存到字符串中还是输出到屏幕上。
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
// 运行cURL，请求网页
$data = curl_exec($curl);
// 关闭URL请求
curl_close($curl);
// 显示获得的数据
var_dump($data);
?>

<?php
$phoneNumber　=　'13812345678';
$message　=　'This　message　was　generated　by　curl　and　php';
$curlPost　=　'pNUMBER='　.　urlencode($phoneNumber)　.　'&MESSAGE='　.　urlencode($message)　.　'&SUBMIT=Send';
$ch　=　curl_init();
curl_setopt($ch,　CURLOPT_URL,　'http://www.lxvoip.com/sendSMS.php');
curl_setopt($ch,　CURLOPT_HEADER,　1);
curl_setopt($ch,　CURLOPT_RETURNTRANSFER,　1);
curl_setopt($ch,　CURLOPT_POST,　1);
curl_setopt($ch,　CURLOPT_POSTFIELDS,　$curlPost);
$data　=　curl_exec();
curl_close($ch);
?>

<?php　
$ch　=　curl_init();
curl_setopt($ch,　CURLOPT_URL,　'http://www.cmx8.cn');
curl_setopt($ch,　CURLOPT_HEADER,　1);
curl_setopt($ch,　CURLOPT_RETURNTRANSFER,　1);
curl_setopt($ch,　CURLOPT_HTTPPROXYTUNNEL,　1);
curl_setopt($ch,　CURLOPT_PROXY,　'proxy.lxvoip.com:1080');
curl_setopt($ch,　CURLOPT_PROXYUSERPWD,　'user:password');
$data　=　curl_exec();
curl_close($ch);
?>

<?php  

!extension_loaded('curl') && die('The curl extension is not loaded.');  

$discuz_url = 'http://www.lxvoip.com';//论坛地址  
$login_url = $discuz_url .'/logging.php?action=login';//登录页地址  
$get_url = $discuz_url .'/my.php?item=threads'; //我的帖子  

$post_fields = array();  
//以下两项不需要修改  
$post_fields['loginfield'] = 'username';  
$post_fields['loginsubmit'] = 'true';  
//用户名和密码，必须填写  
$post_fields['username'] = 'lxvoip';  
$post_fields['password'] = '88888888';  
//安全提问  
$post_fields['questionid'] = 0;  
$post_fields['answer'] = '';  
//@todo验证码  
$post_fields['seccodeverify'] = '';  

//获取表单FORMHASH  
$ch = curl_init($login_url);  
curl_setopt($ch, CURLOPT_HEADER, 0);  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  
$contents = curl_exec($ch);  
curl_close($ch);  
preg_match('/<input\s*type="hidden"\s*name="formhash"\s*value="(.*?)"\s*\/>/i', $contents, $matches);  
if(!empty($matches)) {  
    $formhash = $matches[1];  
} else {  
    die('Not found the forumhash.');  
}  

//POST数据，获取COOKIE  
$cookie_file = dirname(__FILE__) . '/cookie.txt';  
//$cookie_file = tempnam('/tmp');  
$ch = curl_init($login_url);  
curl_setopt($ch, CURLOPT_HEADER, 0);  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  
curl_setopt($ch, CURLOPT_POST, 1);  
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);  
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file);  
curl_exec($ch);  
curl_close($ch);  

//带着上面得到的COOKIE获取需要登录后才能查看的页面内容  
$ch = curl_init($get_url);  
curl_setopt($ch, CURLOPT_HEADER, 0);  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);  
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file);  
$contents = curl_exec($ch);  
curl_close($ch);  

var_dump($contents);