php chmod() not changing permissions

Question

I am having problems with a picture uploading script.

I know there are hundreds of the same questions, but I haven\'t found the one that would be work for me.

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Answer 1

The directory must be owned by the user invoking the script (typically www-data, apache or httpd if you're running the script in a apache/*NIX setup). A user can't set 777 permissions on directories it doesn't own.

See the note on the chmod() manual:

The current user is the user under which PHP runs. It is probably not the same user you use for normal shell or FTP access. The mode can be changed only by user who owns the file on most systems.