PHP uses the readfile function to determine download file permissions_PHP tutorial

Php code

$file = get_file_address(); // The real address of the file (supports url, but url is not recommended)

if (file_exists($file))
{ 
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
Ob_clean(); //The important thing is the call of this function, clear but not close the output cache, otherwise the first two characters of the downloaded file will be 0a
flush();
Readfile($file); // Output file content
} 
?>

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http://www.bkjia.com/PHPjc/478673.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/478673.htmlTechArticlePhp code?php $file = get_file_address();//The real address of the file (url is supported, but not recommended Use url) if (file_exists($file)) { header(Content-Description: File Transfer); header...