PHP code to implement browser click download of TXT document

/**
* txt document click to download
* edit bbs.it-home.org
*/
$filename = '/path/'.$_GET['file'].'.txt'; //File path
header("Content -Type: application/force-download");
header("Content-Disposition: attachment; filename=".basename($filename));
readfile($filename);
?>

Instructions: The first header function sets the value of Content-Type to application/force-download; The second header function sets the file to be downloaded. Note that filename here is a file name that does not include a path. The value of filename will be the file name in the dialog box that pops up after clicking download. If there is a path, the file name in the dialog box that pops up is unknown; Finally, the file stream is output to the browser through the readfile function, thus realizing the download of the txt file.