<pre> 
&lt;html>
&lt;head>
&lt;title>Process an HTML form&lt;/title>
&lt;/head>
&lt;body>

&lt;?php include "../include.php"; ?>              &lt;!-- hyperlink to see the code -->

&lt;?php

        error_reporting(E_ALL ^ E_WARNING ^ E_NOTICE);  //all but warnings & notices

//----- Retrieve form elements ---------------------------------------------

        $firstname  = $_POST['firstname'];              #get HTML form entry fields 
        $lastname   = $_POST['lastname'];                
        $address    = $_POST['address'];
        $flavor     = $_POST['flavor'];                 #select list array
        $topping    = $_POST['topping'];                #checkboxes array
        $creditCard = $_POST['creditCard'];

        if (is_array($flavor))                          #select list
            $flavor  = implode(',' , $flavor);          
        if (is_array($topping))                         #checkboxes
            $topping = implode(',' , $topping);         

        if (!$firstname) {
            print "&lt;font color=red>Please enter First Name&lt;/font>";
            exit; 
        }
        if (!$lastname) {
            print "&lt;font color=red>Please enter Last Name&lt;/font>";
            exit; 
        }
        if (!$address) {
            print "&lt;font color=red>Please enter your Address&lt;/font>";
            exit; 
        }
        if (!$flavor) {
            print "&lt;font color=red>Please choose ice cream flavor(s)&lt;/font>";
            exit; 
        }
        if (!$topping) {
            print "&lt;font color=red>Please select topping(s)&lt;/font>";
            exit; 
        }
        if (!$creditCard) {
            print "&lt;font color=red>Please select Credit Card&lt;/font>";
            exit; 
        }

        print "&lt;table bgcolor=lightyellow border=2> \n";
        print "&lt;tr bgcolor=tan> \n";
        print "&lt;th>Element Name&lt;/th>&lt;th>Element Value&lt;/th> \n"; 
        print "&lt;tr>&lt;th>Firstname&lt;/th>   &lt;td>$firstname  &nbsp;&lt;/td> \n"; 
        print "&lt;tr>&lt;th>Lastname&lt;/th>    &lt;td>$lastname   &nbsp;&lt;/td> \n"; 
        print "&lt;tr>&lt;th>Address&lt;/th>     &lt;td>$address    &nbsp;&lt;/td> \n"; 
        print "&lt;tr>&lt;th>Flavor&lt;/th>      &lt;td>$flavor     &nbsp;&lt;/td> \n"; 
        print "&lt;tr>&lt;th>Topping&lt;/th>     &lt;td>$topping    &nbsp;&lt;/td> \n"; 
        print "&lt;tr>&lt;th>Credit Card&lt;/th> &lt;td>$creditCard &nbsp;&lt;/td> \n";
        print "&lt;/table>"; 

?>

&lt;/body>
&lt;/html>
</pre>