PHP File Down 与 header()

Question

我编写了以下代码以允许在不显示源的情况下下载文件。

在本例中，文件“test.pdf”已下载，但已损坏。

谁能看出会出现这种情况的任何原因？

$path = 'http://www.domain.org/images/uploads/test.pdf';

// Directory Path
$directory_path_filename = str_replace('http://www.domain.org/', '', $path);

$filepath = '/var/sites/l/domain.org/public_html/'.$directory_path_filename;

if ( file_exists( $filepath ) ) {

    $finfo = finfo_open( FILEINFO_MIME );
    header( 'Content-Type: application/pdf' );
    header( 'Content-Disposition: attachment; filename= ' . basename( $filepath ) );
    header( 'Content-Length: ' . filesize( $filepath ) );
    header( 'Expires: 0' );
    finfo_close( $finfo );

    ob_clean( );
    flush( );
    readfile( $filepath );
    exit;
}

Answer 1

请使用此方法

$file 接收完整路径，$filename 是下载文件名。

public static function downloadFile($file, $filename)
    {
        if (file_exists($file)) {
            header('Content-Description: File Transfer');
            header('Content-Type: application/octet-stream');
            header('Content-Disposition: attachment; filename = '.basename($filename));
            header('Content-Transfer-Encoding: binary');
            header('Expires: 0');
            header('Cache-Control: must-revalidate, post-check = 0, pre-check = 0');
            header('Pragma: public');
            header('Content-Length: ' . filesize($file));
            ob_clean();
            flush();
            readfile($file);
            die;
        }
    }