Thinkphp can not implement RAR file upload, I hope you point out the solution

Thinkphp can not realize the upload of RAR file, I hope you pointed out
thinkphp implementation file upload, RAR format can not be uploaded, Pdf,jpg,xls file upload

PHP Code

  
      Public function upload () {       if (!empty ($_files)) {           echo ' OK ';           Dump ($_files);           If there is a file upload, upload the attachment            $this->_upload ();                   }       else{           echo ' no ';           Dump ($_files);       }          }

After submitting the RAR format file, it is determined that the submitted data is empty and the "no" is printed;
If the Pdf,jpg,xls file is submitted, the submitted data is judged to be normal and the upload is successful.

------Solution--------------------
Add this $upload->allowexts = Array ("RAR"); Set Attachment upload Type

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