passing a form to the same page

Dutch_MaFia-boy

I'm reading through "php in 24 hours" and in the book it talks about passing the form on the same page.....below is the example. I can't get it to work. Whenever I hit submit, its loads a 404 page error..

<?php
$num_to_guess = 42;
$message="";
if (isset($guess))
   {
   $message="Welcome to the guessing machine!";
   }
elseif ($guess > $num_to_guess)
   {
   $message = "$guess is too big! Try a smaller number";
   }
elseif ($guess < $num_to_guess)
   {
   $message = "$guess is too big! Try a bigger number";
   }
else // ($guess == $num_to_guess)
   {
   $message = "Holy cow! You guessed it right";
   }
?>

<html>
<head>
<title>on same page PHP script</title>
</head>
<body>
<h1>
<?php print $message ?>
</h1>
<form action = "<php print $PHP_SELF?>" method="POST">
Type your guess here: <input type="text" name="guess">
<input type="submit" value"hit it!">
</form>
</body>
</html>

Thanks.

Strings

Well there were a few things wrong with your code...

1) You forgot to include a '?' on your form action. That's why you were getting a 404 error.

2) You should use $_POST['guess'] since you're getting the value from an html form...

I made a few adjustments to your code. It should work now...

<?php
$num_to_guess = 42;
$message="";
if (!isset($_POST['guess']))
   {
   $message="Welcome to the guessing machine!";
   }
elseif ($_POST['guess'] > $num_to_guess)
   {
   $message = "$guess is too big! Try a smaller number";
   }
elseif ($_POST['guess'] < $num_to_guess)
   {
   $message = "$guess is too big! Try a bigger number";
   }
else // ($guess == $num_to_guess)
   {
   $message = "Holy cow! You guessed it right";
   }
?>

<html>
<head>
<title>on same page PHP script</title>
</head>
<body>
<h1>
<?php print $message ?>
</h1>
<form action = "<?php print $PHP_SELF?>" method="POST">
Type your guess here: <input type="text" name="guess">
<input type="submit" value"hit it!">
</form>
</body>
</html>

oldgoat

I am using the following code:

<form method="POST"> to "execute" the same page.

And I have seen the following used: