使用php Curl进行多文件上传

我正在尝试使用CurlFile函数上载多个图像。这是我传递给curl函数的数组：

array (size=16)
  'action' => string 'saveM' (length=12)
  'firstName' => string 'qwer' (length=4)
  'lastName' => string '' (length=0)
  'gender' => string 'male' (length=4)
  'dateOfBirth' => string '' (length=0)
  'dateOfDeath' => string '' (length=0)
  'type' => string 'family' (length=6)
  'biography' => string 'wqer' (length=4)
  'graveLat' => string '' (length=0)
  'graveLong' => string '' (length=0)
  'communityId' => string '' (length=0)
  'members' => string '' (length=0)
  'privacy' => string 'public' (length=6)
  'token' => string 'a31818ff1f18f1d318fe6' (length=22)
  'image' => 
    object(CURLFile)[35]
      public 'name' => string 'D:\xampp\tmp\phpC6BD.tmp' (length=24)
      public 'mime' => string '' (length=0)
      public 'postname' => string 'head-659652_640.png' (length=19)
  'photos' => 
    array (size=4)
      0 => 
        object(CURLFile)[36]
          public 'name' => string 'D:\xampp\tmp\phpC6CE.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string '2584150-1486688827928-funnyprofile.jpg' (length=38)
      1 => 
        object(CURLFile)[37]
          public 'name' => string 'D:\xampp\tmp\phpC6CF.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string '5993755201548256265.jpg' (length=23)
      2 => 
        object(CURLFile)[38]
          public 'name' => string 'D:\xampp\tmp\phpC6D0.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string 'dummy-image1.jpg' (length=16)
      3 => 
        object(CURLFile)[39]
          public 'name' => string 'D:\xampp\tmp\phpC6E0.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string 'head-659652_640.png' (length=19)

$curl = curl_init();
            curl_setopt_array($curl, array(
                CURLOPT_RETURNTRANSFER => 1,
                CURLOPT_URL => self::$api_url,
                CURLOPT_POST => 1,
                CURLOPT_POSTFIELDS => ($apicall)
            ));

            $result = curl_exec($curl);
            curl_close($curl);

这是旋度函数：

array (size=16)
  'action' => string 'saveM' (length=12)
  'firstName' => string 'qwer' (length=4)
  'lastName' => string '' (length=0)
  'gender' => string 'male' (length=4)
  'dateOfBirth' => string '' (length=0)
  'dateOfDeath' => string '' (length=0)
  'type' => string 'family' (length=6)
  'biography' => string 'wqer' (length=4)
  'graveLat' => string '' (length=0)
  'graveLong' => string '' (length=0)
  'communityId' => string '' (length=0)
  'members' => string '' (length=0)
  'privacy' => string 'public' (length=6)
  'token' => string 'a31818ff1f18f1d318fe6' (length=22)
  'image' => 
    object(CURLFile)[35]
      public 'name' => string 'D:\xampp\tmp\phpC6BD.tmp' (length=24)
      public 'mime' => string '' (length=0)
      public 'postname' => string 'head-659652_640.png' (length=19)
  'photos' => 
    array (size=4)
      0 => 
        object(CURLFile)[36]
          public 'name' => string 'D:\xampp\tmp\phpC6CE.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string '2584150-1486688827928-funnyprofile.jpg' (length=38)
      1 => 
        object(CURLFile)[37]
          public 'name' => string 'D:\xampp\tmp\phpC6CF.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string '5993755201548256265.jpg' (length=23)
      2 => 
        object(CURLFile)[38]
          public 'name' => string 'D:\xampp\tmp\phpC6D0.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string 'dummy-image1.jpg' (length=16)
      3 => 
        object(CURLFile)[39]
          public 'name' => string 'D:\xampp\tmp\phpC6E0.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string 'head-659652_640.png' (length=19)

$curl = curl_init();
            curl_setopt_array($curl, array(
                CURLOPT_RETURNTRANSFER => 1,
                CURLOPT_URL => self::$api_url,
                CURLOPT_POST => 1,
                CURLOPT_POSTFIELDS => ($apicall)
            ));

            $result = curl_exec($curl);
            curl_close($curl);

图像数组正确上传文件，但我的问题在于照片根本没有上传多个图像，并给出错误“数组到字符串转换”

---

有什么想法吗？

我通过将照片中的内容更改为以下内容来修复它：

'photos[0]' => 
        object(CURLFile)[36]
          public 'name' => string 'D:\xampp\tmp\phpC6CE.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string '2584150-1486688827928-funnyprofile.jpg' (length=38)
'photos[1]' => 
        object(CURLFile)[37]
          public 'name' => string 'D:\xampp\tmp\phpC6CF.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string '5993755201548256265.jpg' (length=23)
'photos[2]' => 
        object(CURLFile)[38]
          public 'name' => string 'D:\xampp\tmp\phpC6D0.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string 'dummy-image1.jpg' (length=16)
'photos[3]' => 
        object(CURLFile)[39]
          public 'name' => string 'D:\xampp\tmp\phpC6E0.tmp' (length=24)
          public 'mime' => string '' (length=0)
          public 'postname' => string 'head-659652_640.png' (length=19)