you can do this:
<?php
echo substr(sprintf('%o', fileperms('/directory')), -4);
echo substr(sprintf('%o', fileperms('/directory/subdirectory')), -4);
?>
echo substr(sprintf('%o', fileperms('/directory')), -4);
echo substr(sprintf('%o', fileperms('/directory/subdirectory')), -4);
?>
OUTPUT
1777
0644
0644
with this, you can verify or show what are the permissions for a certain file in php in your directories from your website.

