每当我尝试使用此PHP脚本除txt文件下载任何内容时获取损坏的文件

Question

Whenever i run this script , i get a corrupted file .Downloading is happening but i get a corrupted file .let it be a zip file ,img file ,only txt files are working good.Plz help

<?php
function download($file){
$file="1.jpg";
$dir = './files/';
$path = $dir.$file;
if(!file_exists($path)){
    die('Error');
}else{
    header('Content-Disposition: attachment; filename='.basename($path));
    header('Content-Type: image/jpeg');
    header('Content-Transfer-Encoding: binary');
    header('Content-Length: ' . filesize($path));
    readfile($path);

}
}

    download("1.jpg");


?>

Answer 1

If you are desperately trying to force a file download in php, then you can redirect to the url of your file using:

header("Location: $path");

This method is very frequently used, especially if the file doesn't have a MIME type which is supported by the browser. However, if you do know the MIME type of the file you want to be download, it is strongly recommended that you use the appropriate Content-type header for that purpose.For instance, if you want to force a jpg file download (as in your example) then you will have to use something like this:

header('Content-Disposition: attachment; filename='.basename($path));
header('Content-Type: image/jpeg');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($path));
readfile($path);