Exercise 6: CGI and PHP programming

You will be writing 3 different PHP scripts to try out the stuff you learned this week.

First move into your web directory.
```
    $ cd www
```
Create a directory called 'ex6' or 'exercise6' and move into it.
```
    $ mkdir ex6
    $ cd ex6
```

Create the following three scripts in the ex6 directory.

helloworld.php3 - prints out "Hello World!" and calls soundcheck function which was covered in class
utils.php3 - must contain at least 3 of the miscellaneous functions covered in Tuesday's class

formtest.php3 - put in the code given here

<?php_track_vars?>
<?
    echo "Values submitted via POST method:<br>";

    /* reset() rewinds the given array's internal ptr to first elem */
    reset($HTTP_POST_VARS);

    /* list() - isn't really a function, assigns a list of 
       vars in one operation, in this case each returns a
       key, value pair which list is assigning to $key and
       $val */
    while (list ($key, $val) = each ($HTTP_POST_VARS)) {
        echo "$key => $val <br>";
    }
?>

Create an HTML form called formtest.html using at least 2 different input types. Here is a start on the form.

<HTML>
<HEAD>
<TITLE>The Life Cycle Applet</TITLE>
</HEAD>
<BODY>
<FORM ACTION="formtest.php3" METHOD="POST"
>
</FORM>
</BODY>
</HTML>

This is due in class on Thursday. It needs to be turned into your www directory in a seperate directory named ex6 or exercise6.