拖放文件并上传提交按钮点击PHP

Question

我想将文件拖放到拖放区，一旦文件放入拖放区，然后它必须附加HTML文件上传控制。并点击提交按钮上传文件。

<form name="form1" method="post" enctype="multipart/form-data" action="index.php"> 
    <div id="dropContainer" style="border:1px solid black;height:100px;width:100px;"> 
     Drop Here 
    </div> 
    Should update here: <input type="file" name="fileInput" id="fileInput" /> 
    <input type="submit" name="submit" value="submit"/> 
</form> 

Answer 1

http://www.codexworld.com/drag-and-drop-file-upload-using-dropzone-php/ 发现这里演示其完整的演示和代码解释

Answer 2

我想验证附件描述字段可根据用户需要现场和不上传文件。点击提交按钮后，只有文件上传并验证必填字段。

<form name="form1" method="post" enctype="multipart/form-data" action="index.php"> 
 
    <div id="dropContainer" style="border:1px solid black;height:100px;width:100px;"> 
 
     Drop Here 
 
    </div> 
 
    <div> 
 
     Attachment Description : <input type="text" name="description" id="description" required> 
 
    </div> 
 
    <div> 
 
     Should update here: <input type="file" name="fileInput" id="fileInput" /> 
 
    </div> 
 
    <input type="submit" name="submit" value="submit"/> 
 
</form>