init.php文件 PHP实现文件下载

 1publicfunction get_download_file()
 2{
 3header ( 'Content-Description: File Transfer' );
 4header ( 'Content-Type: application/octet-stream' );
 5header ( 'Content-Disposition: attachment; filename=' . basename ( $file ));
 6header ( 'Content-Transfer-Encoding: binary' );
 7header ( 'Expires: 0' );
 8header ( 'Cache-Control: must-revalidate' );
 9header ( 'Pragma: public' );
10header ( 'Content-Length: '  .  filesize ( $file ));
11ob_clean ();
12flush ();
13readfile ( $file );
14exit;
15 }

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