how to get two numbers match with a posting form,,,,,

[redarrow]

how can i get a session to match a varable...

 

as soon as i post the varable $res, the session

changes so how do you do it thank you...

 

 

<?php session_start();

$_SESSION['number']=rand(000000,999999);

$res=$_SESSION['number'];

if($_POST['submit']){

$res=$_POST['res'];

if($res==$_SESSION['number']){

	echo "correct";
}
}
?>

<form method="POST" action="">
<br><br>
<?php echo $_SESSION['number']; ?>
<br><br>
please enter number
<br></br>
<input type="text" name="res">
<br><BR>
<input type="submit" name="submit" value="SEND">
</form>

[tinker]

Because you reset the 'number' each time (at the start), you'll need a second variable, either use 'res' or 'last_number':

$_SESSION['last_number'] = $_SESSION['number'];

 

P.S. What are you trying to do?

[redarrow]

a easy gotcha, can you show me the example you posted cheers......

[tinker]

same as calculating a time step in a game loop... what you trying to achieve?

[redarrow]

secuity form like gotcha if the numbers match goto the page lol

 

 

example but the session always matches i need it to match on posting

<?php session_start();

$_SESSION['number']=rand(000000,999999);

$_SESSION['last_number']=$_SESSION['number'];

if($_POST['submit']){

$res=$_SESSION['last_number'];

if($res==$_SESSION['number']){

	echo "correct";
}
}
?>

<form method="POST" action="">
<br><br>
<?php echo $_SESSION['number']; ?>
<br><br>
please enter number
<br></br>
<input type="text" name="res">
<br><BR>
<input type="submit" name="submit" value="SEND">
</form>

[tinker]

sorry the 'gotcha' thing flew straight by me (self taught)...

Change this bit to:

if($res==$_SESSION['last_number']){

	echo "correct";
}
}

 

The way I do is to generate a gotcha string and a md5/salt of it, store both in a table, then send the md5 in the page, which calls a gd image gen page passing the md5, this then looks up the gotcha string in the table using the md5. This way the gotcha string is never sent in plain text...