PHP中curl的使用

<?php
// 创建一个新cURL资源
$ch = curl_init();

// 设置URL和相应的选项
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, false);

// 抓取URL并把它传递给浏览器
curl_exec($ch);

//关闭cURL资源，并且释放系统资源
curl_close($ch);
?>

$header [] = ‘Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8‘;
$header [] = ‘Accept-Encoding:gzip, deflate‘;
$header [] = ‘Accept-Language:en‘;
$header [] = ‘Cache-Control:max-age=0‘;
$header [] = ‘Connection:keep-alive‘;
$header [] = ‘Cookie: PHPSESSID=jkuflj1jgoo7vvh5fcae3md262; qtrans_cookie_test=1‘;
$header [] = ‘DNT:1‘;
$header [] = ‘CLIENT-IP:58.68.44.61‘;
$header [] = ‘X-FORWARDED-FOR:58.68.44.61‘;
//$header [] = ‘Host:www.baidu.com‘;
$header [] = ‘If-Modified-Since:Tue, 08 Sep 2015 03:07:27 GMT‘;
$header [] = ‘User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0‘;

$cookie = tempnam(‘/data/www/tmp/‘,‘seek‘);
curl_setopt($ch, CURLOPT_HEADER,0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1);
curl_setopt($ch, CURLOPT_MAXREDIRS, 10);
curl_setopt($ch, CURLOPT_AUTOREFERER,1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header );
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie);
if($type == ‘POST‘ && !empty($data)){ //POST && is not empty $data
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
}
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);
curl_setopt($ch, CURLOPT_ENCODING, ‘gzip,deflate‘);
curl_setopt($ch, CURLOPT_TIMEOUT,120);
$content = curl_exec($ch);                                                                                                        
curl_close($ch);

$tp = @fopen($path, ‘a‘);
fwrite($tp, $content);
fclose($tp);

<?php
    $username = ‘username‘;
    $password = ‘password‘;
    $url = ‘example.com‘;
    $ftp_server = "ftp://" . $username . ":" . $password . "@" . $url;
   
    echo "Starting CURL.\n";
    $ch = curl_init();
    echo "Set CURL URL.\n";
   
    //curl FTP
    curl_setopt($ch, CURLOPT_URL, $ftp_server);
   
    //For Debugging
    //curl_setopt($ch, CURLOPT_VERBOSE, TRUE);
   
    //SSL Settings
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($ch, CURLOPT_FTP_SSL, CURLFTPSSL_TRY);
   
    //List FTP files and directories
    curl_setopt($ch, CURLOPT_FTPLISTONLY, TRUE);
   
    //Output to curl_exec
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    echo "Executing CURL.\n";
    $output = curl_exec($ch);
    curl_close($ch);
    echo "Closing CURL.\n";
    echo $output . "\n";

   $files = explode("\n", $output);
   print_r($files);
?>

<?php　
$ch　=　curl_init();
curl_setopt($ch,　CURLOPT_URL,　‘http://www.baidu.com‘);
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);
?>

curl_setopt($ch, CURLOPT_VERBOSE, TRUE);

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

or

curl_setopt($ch, CURLOPT_VERBOSE, ‘1‘);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, ‘2‘);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, ‘1‘);
curl_setopt($ch, CURLOPT_CAINFO,  getcwd().‘/cert/ca.crt‘);
curl_setopt($ch, CURLOPT_SSLCERT, getcwd().‘/cert/mycert.pem‘);
curl_setopt($ch, CURLOPT_SSLCERTPASSWD, ‘password‘); 

$cookie = tempnam(‘/data/www/tmp/‘,‘seek‘);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie);
curl_setopt($ch, CURLOPT_COOKIEJAR,$cookie); 

CURLOPT_AUTOREFERER  当根据Location:重定向时，自动设置header中的Referer:信息
CURLOPT_FOLLOWLOCATION 启用时会将服务器服务器返回的"Location: "放在header中递归的返回给服务器，使用CURLOPT_MAXREDIRS可以限定递归返回的数量
CURLOPT_HEADER 启用时会将头文件的信息作为数据流输出（保存图片的时候要关闭）
CURLOPT_NOBODY 启用时将不对HTML中的BODY部分进行输出
CURLOPT_POST 启用时会发送一个常规的POST请求，类型为：application/x-www-form-urlencoded，就像表单提交的一样
CURLOPT_RETURNTRANSFER 将curl_exec()获取的信息以文件流的形式返回，而不是直接输出
CURLOPT_TIMEOUT  设置cURL允许执行的最长秒数
CURLOPT_COOKIE 设定HTTP请求中"Cookie: "部分的内容。多个cookie用分号分隔，分号后带一个空格(例如， "fruit=apple; colour=red")
CURLOPT_COOKIEFILE 包含cookie数据的文件名，cookie文件的格式可以是Netscape格式，或者只是纯HTTP头部信息存入文件
CURLOPT_COOKIEJAR 连接结束后保存cookie信息的文件
CURLOPT_ENCODING HTTP 请求头中"Accept-Encoding: "的值。支持的编码有"identity"，"deflate"和"gzip"。如果为空字符串""，请求头会发送所有支持的编码类型
CURLOPT_POSTFIELDS  全部数据使用HTTP协议中的"POST"操作来发送
CURLOPT_HTTPHEADER 一个用来设置HTTP头字段的数组。使用如下的形式的数组进行设置： array(‘Content-type: text/plain‘, ‘Content-length: 100‘)