Select (drop-down list) Inputs

1. Select (drop-down list) Inputs

2. Insert/Form/List Menu

3. Fill in dialog box

4. Right click on the drop-down list and select List Values Or just click on the List Values button in the Property Inspector

5. Add labels (shown) and values (hidden) and click the + button

6. Code View of Select (Drop-down list)

7. Simple select handler code

8. The value of the selected item is passed to the server

9. Using a switch statement to display different output based on user’s input

10. The switch statement • A switch is a fancy version of an if used when there are several “cases” – various situations (sets of statements) that might be executed depending on the outcome of a single value. switch($session) • In this case there are variations on the text printed based on the $session variable passed from the user using the POST method.

11. A case case "BB1_6_29": print "<p>June 29, 10:00 - 12:00</p>"; print "<p>Blackboard Introduction covers the basics to get one started.</p>"; print "<p>Location: Olney 200</p>"; break; • Starts with the keyword case • Followed by the value signaling that case • Followed by the statements to be executed in this case • Followed by the keyword “break” to denote the end of the case and prevent them from running into each other

12. Result

13. Another approach using a array

14. Arrays • An array is a set of related variables – in this case the set of strings that might be printed. • The individual elements of the array are specified by their index or key • It’s usually referred to as an index if you use a number, e.g. 0, 1, 2, … • It’s usually called a key if you use a string, e.g. ‘BB1_6_29’, as done here

15. Specifying an element print "<p>You have chosen $session.</p> $workshops[$session]"; • In the statement above the code $workshops[$session] refers to the element of the array that has the key that was sent by the user in the POST method.