<?php
$file = "/path/to/your/filename";
if (chmod($file, 0444)) {
echo "Permissions of $file changed.";
} else {
echo "Could not change permissions of $file.";
}
echo '<br />The file permissions are now set to: ';
echo substr(sprintf('%o', fileperms($file)), -4);
Could not change permissions of /store/catalog/includes/configure.php.
The file permissions are now set to: 0