curl 支持SSL证书、HTTP POST、HTTP PUT 、FTP 上传，kerberos、基于HTT格式的上传、代理、cookie、用户＋口令证明、文件传送恢复、http代理通道就最常用的来说，是基于http的get和post方法。

代码实现：

1、http的get实现
复制代码 代码如下:
$ch = curl_init("//www.yinxi.net/") ;
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true) ;
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true) ;
$output = curl_exec($ch) ;
$fh = fopen("out.html", "w") ;
fwrite($fh, $output) ;
fclose($fh) ;

2、http的post实现
复制代码 代码如下:
//extract data from the post
extract($_POST) ;
//set POST variables
$url = "//www.yinxi.net/get-post.php" ;
$fields = array(
"lname"=>urlencode($last_name) ,
"fname"=>urlencode($first_name) ,
"title"=>urlencode($title) ,
"company"=>urlencode($institution) ,
"age"=>urlencode($age) ,
"email"=>urlencode($email) ,
"phone"=>urlencode($phone)
);
//url-ify the data for the POST
foreach($fields as $key=>$value) { $fields_string .= $key."=".$value."&" ; }
rtrim($fields_string ,"&") ;
//open connection
$ch = curl_init() ;
//set the url, number of POST vars, POST data
curl_setopt($ch, CURLOPT_URL,$url) ;
curl_setopt($ch, CURLOPT_POST,count($fields)) ;
curl_setopt($ch, CURLOPT_POSTFIELDS,$fields_string) ;
//execute post
$result = curl_exec($ch) ;
//close connection
curl_close($ch) ;