9.2

• function.php

9.4

• index.php
• header.php
• footer.php

9.4.A

• index1.php
• header1.php
• footer1.php

9.4.B--- & ---9.4.C & ---9.4.D

• index2.php
• header2.php
• footer2.php

9.4.E

• index3.php
• header3.php
• footer3.php

自練9.4.D(對比index2.php & header2.php)

• index4.php
• header4.php