Generally with PHP, files/folders have a permission of 0777 when we want to write to them. suPHP forbids a permission of 0777. Instead, files are supposed to have a permission of 0644 and folders have a permission 0755. However, this is always worded differently

• SuPHP won't allow chmod of 777 so we need to set all files to 644 and directories to 755
• Your scripts and directories can now, only have a maximum of 755 permissions
• Set file permission(s) to allow read access only by you (e.g., chmod 600 filename.suphp).

What is the exact rule and to what files does it apply to? If I have README file somewhere in a nested directory does its permission need to be updated, or does it only apply to .php files?