Force file download with php using header

Question

I want the user to be able to download some files I have on my server  but when I try to use any of the many examples of this around the internet nothing seems to work for me  I ve tried code like this     lt  php   size   filesize  Image png     header  Content-Description  File Transfer    header  Content-Type  image png    header  Content-Disposition  attachment  filename  Image png     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       size   readfile  Image png      I ve even tried to use the most basic example I could find  like this     lt  php header  Content-type  image png    header  Content-Disposition  attachment  filename  Image png     readfile  Image png      When I ve tested this I have removed all the other code I have and used an empty file with just this code to remove any faults created by external sources   When I look in the console the file gets sent with the right headers i e   Content-Disposition  attachment  filename  Image png     But the save dialog isn t displayed   I ve also tried with inline instead of attachment in the content disposition header but that didn t make a difference either  I ve tested this in Firefox 8 0 1 Chrome 15 0 874 121 and Safari 5 1 1

User · Answer

Based on Farhan Sahibole s answer           header  Content-Disposition  attachment  filename Image png            header  Content-Type  application octet-stream       Downloading on Android might fail without this         ob clean             readfile  file     This is all I needed for this to work  I stripped off anything that isn t required for this to work   Key is to use ob clean

User · Answer

its work for me   attachment location    filePath   if  file exists  attachment location          header   SERVER  SERVER PROTOCOL       200 OK        header  Cache-Control  public       needed for internet explorer     header  Content-Type  application zip        header  Content-Transfer-Encoding  Binary        header  Content-Length   filesize  attachment location        header  Content-Disposition  attachment  filename filePath        readfile  attachment location       die      else       die  Error  File not found

User · Answer

The problem was that I used ajax to post the message to the server  when I used a direct link to download the file everything worked fine    I used this other Stackoverflow Q amp A material instead  it worked great for me    Ajax File Download using Jquery  PHP

User · Answer

the htaccess solution  lt filesmatch  quot     i doc odf pdf cer txt   quot  gt    Header set Content-Disposition attachment  lt  FilesMatch gt   you can read this page  https   www techmesto com force-files-to-download-using-htaccess

User · Answer

Here is a snippet from me in testing    obviously passing via get to the script may not be the best     should post or just send an id and grab guid from db    anyhow   this worked   I take the URL and convert it to a path     Initialize a file URL to the variable  file     GET  url     file   str replace Polepluginforrvms Plugin   install url   DOC ROOT   pole-permitter     file      quoted   sprintf   quot  s quot    addcslashes basename  file     quot         size     filesize  file    header   quot Content-type  application octet-stream quot     header   quot Content-Disposition  attachment  filename   quoted  quot     header   quot Content-length   quot     size    header   quot Pragma  no-cache quot     header   quot Expires  0 quot     readfile   quot   file  quot

User · Answer

I   m pretty sure you don   t add the mime type as a JPEG on file downloads   header  Content-Type  image png      These headers have never failed me    quoted   sprintf    s    addcslashes basename  file             size     filesize  file    header  Content-Description  File Transfer    header  Content-Type  application octet-stream    header  Content-Disposition  attachment  filename      quoted    header  Content-Transfer-Encoding  binary    header  Connection  Keep-Alive    header  Expires  0    header  Cache-Control  must-revalidate  post-check 0  pre-check 0    header  Pragma  public    header  Content-Length       size

User · Answer

This worked for me like a charm for downloading PNG and PDF   header  Content-Description  File Transfer    header  Content-Type  application octet-stream    header  Content-Disposition  attachment  filename     file name       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 url      Absolute URL ob clean    flush    readfile  file url     Absolute URL exit

[php] Force file download with php using header()

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