produce csv file

I produce a csv file with php. When I view the source in a browser the result should be o.k. for me but when I will read the responsecontent in appinventor I will get an Code like Dropbox - response.png - Simplify your life. Hope somebody can help me there.

When I copy the php file to an other hoster the sourcecode is also o.k. in appinventor.
kindly regards for any answer.

You just encountered a security system present on all free hosting accounts.

Short answer: you cannot download a CSV file automatically from an InfinityFree hosted website.

More information about the security system can be found here: