I picked up PHP 5/MySQL Programming for the Absolute Beginner from the library, and have been working through the examples in the book to learn the language. Two days ago, I hit a brick wall. I’ve tried everything I can think of to debug it, and can’t figure it out. I’m pretty sure part of my problem is the book’s a bit outdated, as the form example in the book didn’t work either. I’d really appreciate it if someone would take a look at my code and tell me where the problem is.
<html>
<head>
<title>dice</title>
</head>
<body>
<h1>generates 4, 10, or 20 sided dice</h1>
<?php
if (empty($diceside)){
//switch to HTML mode to display form
?>
<form action = "diceroll.php" method = "post">
Which dice do you want to roll?<br><br>
<input type = "radio" name = "diceside" value = "4"> 4 <br>
<input type = "radio" name = "diceside" value = "10"> 10 <br>
<input type = "radio" name = "diceside" value = "20"> 20 <br>
<br>
<input type = "submit"> <br>
</form>
} else if (diceside==4) {
$roll = $rand(1,4);
} else if (diceside==10) {
$roll = $rand(1,10);
} else if {diceside==20) {
$roll = $rand(1,20);
} else {
print ("I don't know that number.");
} //end if
if (!empty($diceside)){
print ("You rolled a $roll!");
}
?>
</body>
</html>