How to get return status of "Save-As" dialogue box ?

[dhillarun]

Hi everbody,

 

I am displaying "Save-As" dialogue box

 header("Cache-Control: public, must-revalidate");
        header("Pragma: hack");
        header("Content-Type: " . $this->mime);
        header("Content-Length: " .(string)($fsize) );
        header('Content-Disposition: attachment; filename="'.basename($this->path.$this->name).'"');
        header("Content-Transfer-Encoding: binary\n");

 

using "header()" function.

 

But how to know that user has clicked "save" button or "cancel" button.

 

Pl do reply me.

[fert]

you can't

[dhillarun]

I am sending the content to the browser as chunks by chunks by using the following function.

 

I tried to check whether no. of bytes sent to browser is equal to original file size.

 

But it's not working.

 

Pl specify any other better way to achieve the same. (i.e)I want to know success or failure in delivery of whole downloading file .

 

function readfile_chunked($filename)
    {
        $chunksize = 1*(1024*1024); // how many bytes per chunk
        $buffer = '';
        $cnt =0;

        $handle = fopen($filename, 'rb');

        if ($handle === false)
        {
                return 0;
        }

        while (!feof($handle))
        {
                $buffer = fread($handle, $chunksize);

                if(print $buffer)
                {
                $cnt += strlen($buffer);
                }

        }

         fclose($handle);

         return $cnt;

    }