- * @param string $file Path to the file.
- * @param int $mode (optional) The permissions as octal number, usually 0644 for files, 0755 for dirs.
- * @param bool $recursive (optional) If set True changes file group recursively. Defaults to False.
+ * @param string $file Path to the file.
+ * @param int $mode Optional. The permissions as octal number, usually 0644 for files,
+ * 0755 for dirs. Default false.
+ * @param bool $recursive Optional. If set True changes file group recursively. Default false.