php使用curl上傳檔案為什麼刪掉一句無法執行

<code>   <?php
   function upload_file($url,$filename,$path){
        $data = array('pic'=>'@'.realpath($path).";filename=".$filename);
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true );
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $return_data = curl_exec($ch);
        curl_close($ch);
        $decode = json_decode($return_data);
        echo $decode->original_pic;      
   }

    if ($_POST) {
        $url = 'https://127.0.0.1/img.php';
        $tmpname = $_FILES['fname']['name'];
        $tmpfile = $_FILES['fname']['tmp_name'];
        upload_file($url,$tmpname,$tmpfile);
        exit;
    }
    echo '<form action="" enctype="multipart/form-data"  method="post">
    <input type="text" name="fname" />
  <input type="file" name="fname" />
  <input type="submit" value="Submit" />
</form>';
?>
</code>

程式碼如上，為什麼刪除就無法執行post？

回覆內容：

<code>   <?php
   function upload_file($url,$filename,$path){
        $data = array('pic'=>'@'.realpath($path).";filename=".$filename);
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true );
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $return_data = curl_exec($ch);
        curl_close($ch);
        $decode = json_decode($return_data);
        echo $decode->original_pic;      
   }

    if ($_POST) {
        $url = 'https://127.0.0.1/img.php';
        $tmpname = $_FILES['fname']['name'];
        $tmpfile = $_FILES['fname']['tmp_name'];
        upload_file($url,$tmpname,$tmpfile);
        exit;
    }
    echo '<form action="" enctype="multipart/form-data"  method="post">
    <input type="text" name="fname" />
  <input type="file" name="fname" />
  <input type="submit" value="Submit" />
</form>';
?>
</code>

程式碼如上，為什麼刪除就無法執行post？

有沒有什麼錯誤訊息啊！貼出來看看

。 。 。應該有報錯的啊，執行是空返回嗎？那隻能打斷點看看那一步出問題

上傳的文件資訊應該是會存在放$_FILES 而不會存在放$_POST裡面然後你的post裡面不就沒東西了提前打出$_POST

沒有找到文檔說明只是試驗了下可以把submit設置一個name