Zip file unsupported php after donwload?

Question

I am trying to download a zip file on the server : as shown in picture

so in my index.php file i wrote this code:

 $file_url = 'P_cra_v2.1.4.zip';  
 header("Content-type: application/zip"); 
 header("Content-Disposition: attachment; filename=$file_url"); 
 header("Pragma: no-cache"); 
 header("Expires: 0"); 
 readfile("$file_url");

it downloads the file but any of my archiever are not able to open it as it says unsupported format.

What to do now?

Answer 1

you should download winrar. some zip file are not supported by windows .they cannot extract the files because it is not supported by windws