$_Session help

unknowngiver · Dec 6, 2006

Hey
as i said in a previous thread, i am learning php and i am trying to make a "Guess the number" game..but everytime the browser refreshes/user inputs a number ..the random number changes..i am using sessions but it still doesnt work..can anyone help?
heres the code:

PHP:

<?php
session_start();
$user_guess = (int)$_POST[guess];
if (empty($_Session['number'])) { 
$_Session['number'] = rand(1,100);

}
$num_to_guess = $_Session['number'];

$message ="";
$counter = 0;
if (!isset($user_guess)){
	$message="Welcome to the guessing machine!";
	}
else if ($user_guess > $num_to_guess) {
	$message = "$user_guess is too big! try a smaller number";
	$counter++;
 }
else if ($user_guess < $num_to_guess) {
	$message = "$user_guess is too small! try a bigger number";
	$counter++;
	}
else {
	$message = "Well done! it tool you $counter times to get the right number";
     }

?>		
<html>
<head>
<title>Number</title</head>
<body>
<p><h1><?php echo $message; ?> </h1></p>
<form action="<?php echo $_SERVER[PHP_SELF]; ?>" method="POST">
<p>Guess: <input type="text" name="guess"></p>
</p><input type="submit" value="submit your guesS"></p>
</form>
</body>
</html>

Dan · Dec 6, 2006

Try changing them from $_Session to $_SESSION

unknowngiver · Dec 6, 2006

lol yup that was the problem :p
Thanks

Tree · Dec 6, 2006

On an unrelated note, you forgot to close your <title> tag properly.

Dan · Dec 6, 2006

Another unrelated note: "Well done! it tool you $counter times to get the right number";

Tree · Dec 6, 2006

Another unrelated note: you close a <p> tag before it's opened.

Code:

</p><input type="submit" value="submit your guesS"></p>

Eh, I had nothing to do. Fixed.

PHP:

<?php
session_start();
$user_guess = (int)$_POST[guess];
if (empty($_SESSION['number'])) { 
$_SESSION['number'] = rand(1,100);

}
$num_to_guess = $_SESSION['number'];

$message ="";
$counter = 0;
if (!isset($user_guess)){
    $message="Welcome to the guessing machine!";
    }
else if ($user_guess > $num_to_guess) {
    $message = "$user_guess is too big! try a smaller number";
    $counter++;
 }
else if ($user_guess < $num_to_guess) {
    $message = "$user_guess is too small! try a bigger number";
    $counter++;
    }
else {
    $message = "Well done! it took you $counter times to get the right number";
     }

?>        
<html>
<head>
<title>Number</title></head>
<body>
<p><h1><?=$message?> </h1></p>
<form action="?" method="POST">
<p>Guess: <input type="text" name="guess"></p>
<p><input type="submit" value="Submit Your Guess"></p>
</form>
</body>
</html>

Dan · Dec 6, 2006

Another unrelated note: your input's aren't valid XHTML. (That's the best I could do.. I think that's it.)

edit: I got another one if Tree is done.

edit2: It seems like he is, so:
Another unrelated note: $counter will always be 0 when the person finishes. You need to make that a session variable and increment it when its wrong and not set it to 0 every time unless it's not set.

unknowngiver · Dec 6, 2006

lol thanks for the notes guyz..its just a fun test game and i m no where close 2 done:p anyway i got another small problem
it never shows this message:

$message="Welcome to the guessing machine!";

Dan · Dec 6, 2006

$user_guess = (int)$_POST[guess];
if (!isset($user_guess)){

You set it.. you need to check if it is empty.

unknowngiver · Dec 6, 2006

okay awesome

heres the new code
p.s: dan: whats xhtml valid form thing u were tellign me about?

PHP:

<?php
	session_start(); // Starts the session
	if (empty($_SESSION['number'])) { 
		$_SESSION['number'] = rand(1,100);
	}

	if(empty($counter)) {
		$_SESSION['count'] = 1;
	}

	# Variables
	$num_to_guess = $_SESSION['number']; // Random number
	$message =""; 
	$user_guess = (int)$_POST[guess];
	$counter=$_SESSION['count'];
	
	if (empty($user_guess)){
    		$message="Welcome to the guessing machine!";
    	}
	else if ($user_guess > $num_to_guess) {
    		$message = "$user_guess is too big! try a smaller number";
    		$counter++;
 	}
	else if ($user_guess < $num_to_guess) {
    		$message = "$user_guess is too small! try a bigger number";
    		$counter++;
    	}
	else {
    		$message = "Well done! it took you ".++$counter." times to get the right number";
		unset($_SESSION['number']);
		unset($_SESSION['Count']);
     	}

?>
        
<html>
<head>
	<title>Number</title>
</head>
<body>

	<p><h1><?=$message?> </h1></p>
	<form action="?" method="POST">
		<p>Guess: <input type="text" name="guess"></p>
		<p><input type="submit" value="Submit Your Guess"></p>
	</form>

</body>
</html>

however, now the counter has problems..it alwayz display 2 for the counter

Dan · Dec 6, 2006

PHP:

<?php

session_start(); // Starts the session
if (empty($_SESSION['number'])) { 
	$_SESSION['number'] = rand(1,100);
}

if (empty($_SESSION['count'])) {
	$_SESSION['count'] = 1;
} else {
	if (!empty($_POST['guess'])) $_SESSION['count']++; 
}

$num_to_guess = $_SESSION['number']; // Random number
$message      = ""; 
$user_guess   = (int)$_POST[guess];
$counter      = $_SESSION['count'];

if (empty($user_guess)){
	$message="Welcome to the guessing machine!";
} elseif ($user_guess > $num_to_guess) {
	$message = "$user_guess is too big! Try a smaller number";
	$counter++;
} elseif ($user_guess < $num_to_guess) {
	$message = "$user_guess is too small! Try a bigger number";
	$counter++;
} else {
	$message = "Well done! It took you ".--$counter." times to get the right number";
	unset($_SESSION['number']);
	unset($_SESSION['count']);
}

?>
        
<html>
<head>
    <title>Number</title>
</head>
<body>
    <p><h1><?=$message?></h1></p>
    <form action="?" method="POST">
        <p>Guess: <input type="text" name="guess" /></p>
        <p><input type="submit" value="Submit Your Guess" /></p>
    </form>
</body>
</html>

You just need to watch variable names and use the correct case. Other than a few errors like counter instead of count, the script would work good.

unknowngiver · Dec 7, 2006

hey
thanks dan

i got another problem though..if user inputs 0 it shows them the "Welcome" message
i dont know why it does it..i guess 0 = empty? how do i fix that

sukantab · Dec 7, 2006

Try this:
Modified the code a bit...

PHP:

<?php 

session_start(); // Starts the session 
$message      = "";  
$counter      = $_SESSION['count']; 
if (!isset($_SESSION['done'])) {
   $message="Welcome to the guessing machine!";
}
else if ($_SESSION['done'] = 1) {
if ($_POST[guess] = 0) {
    $message = "$user_guess is too small! Try a bigger number"; 
    $counter++;
}
if (empty($_SESSION['number'])) {  
    $_SESSION['number'] = rand(1,100); 
} 

if (empty($_SESSION['count'])) { 
    $_SESSION['count'] = 1; 
} else { 
    if (!empty($_POST['guess'])) $_SESSION['count']++;  
} 

$num_to_guess = $_SESSION['number']; // Random number 
$user_guess   = (int)$_POST[guess]; 

if (empty($user_guess)){ 
    $message="Welcome to the guessing machine!"; 
} elseif ($user_guess > $num_to_guess) { 
    $message = "$user_guess is too big! Try a smaller number"; 
    $counter++; 
} elseif ($user_guess < $num_to_guess) { 
    $message = "$user_guess is too small! Try a bigger number"; 
    $counter++; 
} else { 
    $message = "Well done! It took you ".--$counter." times to get the right number"; 
    unset($_SESSION['number']); 
    unset($_SESSION['count']); 
} 
}

?> 
         
<html> 
<head> 
    <title>Number</title> 
</head> 
<body> 
    <p><h1><?=$message?></h1></p> 
    <form action="?" method="POST"> 
        <p>Guess: <input type="text" name="guess" value="<?PHP ECHO $_POST[guess]; ?>"/></p> 
        <p><input type="submit" value="Submit Your Guess" /></p> 
        <input type="hidden" name="done" value="1" />
    </form> 
</body> 
</html>

unknowngiver · Dec 7, 2006

now it alwayz shows "Welcome to the guessing machine"

Dan · Dec 7, 2006

sukantab, what's the point of $_SESSION['done'];? I don't really see what any of that does other than add an if statement.

unknowngiver, the code I posted worked fine and did everything you wanted it to, right?

unknowngiver · Dec 7, 2006

Dan: yes but if you enter "0" it gives the welcome message again..instead of saying "number is 2 small"..

$_Session help

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