curl 文件上传

curl_file_create (带路径的文件名 [, 文件mimetype , 上传数据里的文件名] ) ;

new cURLFile (带路径的文件名 [, 文件mimetype , 上传数据里的文件名] ) ;

$ch = curl_init('http://example.com/upload.php');
// 创建CURLFile对象
$cfile = curl_file_create('cats.jpg','image/jpeg','test_name');

// 分配提交的数据
$data = array('test_file' => $cfile);
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_exec($ch);

upload.php打印输出：

array(1) {
  ["test_file"]=>
  array(5) {
    ["name"]=>
    string(9) "test_name"
    ["type"]=>
    string(10) "image/jpeg"
    ["tmp_name"]=>
    string(14) "/tmp/phpPC9Kbx"
    ["error"]=>
    int(0)
    ["size"]=>
    int(46334)
  }
}

   $ch = curl_init();
    // 上传多个
    $postFields = array(
        'file[0]' => new cURLFile($file1, $mimetype1, $basename1),
        'file[1]' => new cURLFile($file2, $mimetype2, $basename2)
    )
    
    curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);

将@前缀文件名转为cURLFile

if(is_array($postfields) == true)
{
    foreach($postfields as $key => $value)
    {
        // 以@开头
        if(strpos($value, '@') === 0)
        {
            // 得到去掉@的文件名
            $filename = ltrim($value, '@');
            //转为CURLFile类
            $postfields[$key] = new CURLFile($filename);
        }
    }
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $postfields);

//上传地址
$target="http://youraddress.tld/example/upload.php";
//面向过程的方式创建CURLFile 对象
$cfile1 = curl_file_create('resource/test.png','image/png','testpic');  

//面向对象 的方式创建CURLFile 对象
$cfile2 = new CURLFile('resource/test.png','image/png','testpic'); 

分配post提交的数据
$imgdata =[
    'myimage1' => $cfile1,
    'myimage2' => $cfile2
];
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $target);
//可选
curl_setopt($curl, CURLOPT_USERAGENT,'Opera/9.80 (Windows NT 6.2; Win64; x64) Presto/2.12.388 Version/12.15');
可选
curl_setopt($curl, CURLOPT_HTTPHEADER,array('User-Agent: Opera/9.80 (Windows NT 6.2; Win64; x64) Presto/2.12.388 Version/12.15','Referer: http://someaddress.tld','Content-Type: multipart/form-data'));

curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); // 停止验证证书
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);//将获取的信息以字符串返回 
curl_setopt($curl, CURLOPT_POST, true); // post请求
curl_setopt($curl, CURLOPT_POSTFIELDS, $imgdata); // 提交
//可选
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); // 上传后有重定向
$r = curl_exec($curl); 
curl_close($curl);