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  1. I have problems understanding what permissions to use for a secure folder. Reference page 341. Can you help me understand UNIX permissions for a secure folder. I understand the permissions' matrix --- 777, 755 etc. My problem is understanding how tight the permissions can be set and still allow the php code to execute --- 644, 544, 444 or is it 755 etc. My web site is on a common server. Uploads are permitted but I use chdir to change the permissions before upload in the upload script and use chdir to revert after the upload. Just bought and read your book. It is a very nice update. Thank you for sharing your knowledge. As you say "Your book isn't just the greatest book ever written, period! It totally blows 'One Hundred Years of Solitude' out of the water."
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