Apache: difference between chmod 644 and chmod 666 and chmod 600 for output/txt/dat?
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Well, the web-server is the owner of the file then, and then only the first digit matters.
I still dont understnd why people want something un-secured,
I quote this:
5. Make sure file test.txt inside "logs" folder is writable by PHP scripts. On Unix (Linux) servers CHMOD this file to 666 (rw-rw-rw-).
That's it. To test if PHPGCounte works fine open graphcount.php?page=test in your browser, for example:
Well, that's a different question. Usually www-data does not have many privileges, while other accounts on a web server have a lot more. So preventing e.g. you to read/write the file, does not add much to security. You could of course chown, then chmod it 600, but that's more like securing the web server from you.