file_put_contents not working

Question

I try to upload something to my ubuntu server by file_put_contents (a converted base64-string as .jpg) with the following code :

file_put_contents($filename, base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data)));

And yes, all parameters are right, I double checked them. And I'm wondering why it is not working:

By the way: I try to upload it to a folder, one level higher then the folder, that is reachable by the url (but even when putting it directly in internet folder, it doesn't work either).

I thought about bad permissions, but even when changing permissions to 777 (which I know is very unsafe), it doesn't work.

I also don't get any errors in console.

Does anybody have an idea why this is not working?

Thanks.

Answer 1

Folder Permissions

About the permissions for the folder where you're trying to save (/var/www/html) you can change the group of the folder and change the permissions so that the group can write as:

$ sudo chgrp www-data /var/www/html/
$ sudo chmod 775 /var/www/html

Regex

preg_replace('#^data:image/\w+;base64,#i', '', $data)

AFAIK the pattern must have the start and end slashes, I think you've confused the / with #, so it would look like

/^data:image/\w+;base64,/i

Still that slash after image will give you some problems in some versions, so escape it with a backslash

/^data:image\/\w+;base64,/i

I think this will do :)