如果图像是大型CodeIgniter，则图像无效

Question

I'm using this code to download a file:

if ($file_name) {
    $file_url = $file_name;
    header('Content-Type: application/octet-stream');
    header("Content-Transfer-Encoding: Binary");
    header("Content-disposition: attachment; filename=\"" . $file_url . "\"");
    ob_clean();
    flush();
    readfile($file_url);
}

It downloads small file properly but when file size is large then, for Image files (like .jpg) saying Invalid Image. And for .pdf it is says invalid format. I'm using CodeIgniter framework.

$file_name start with https://

Answer 1

Use the Codeigniter download helper. In your controller:

$this->load->helper('download');
$data = file_get_contents($filePath); 
$extension = end(explode(".", $filePath);
$name = "myfile" . "." . $extension;

force_download($name, $data);