Setting Session Variable from Form

Question

Is it possible to set a session variable from a radio button? This is what I have so far:

<form action="process.php" method"post">
<input type="radio" name="number" id="number" value="1" /> 1 
<input type="radio" name="number" id="number" value="2" /> 2 
<input type="radio" name="number" id="number" value="3" /> 3 <br />
<input type="submit" name="Submit" value="Submit" />
</form>

And then for my process.php:

<?php 
session_start();
session_register ("number");
$_SESSION['number'] = $_POST['number'];
echo "Number = ". $_SESSION['number'];
?>

I have the echo "Number = " in there just to test and make sure the variable is being set, but it still seems to be coming back blank.

I am really confused. Thank you for your help :-)

Community · Accepted Answer · 2020-06-20 09:12:55Z

4

You are missing = in here:

method"post"

Should be:

method="post"

Note

You have a couple of more problems:

The id should always be unique per element per page

<input type="radio" name="number" id="number1" value="1" /> 1 
<input type="radio" name="number" id="number2" value="2" /> 2 
<input type="radio" name="number" id="number3" value="3" /> 3 <br />

Avoid using session_register function because it is deprecated, eg remove below line:

session_register ("number");

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Sep 25, 2010 at 20:59

Sarfraz

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3 Comments

Amyunimus Over a year ago

Is it possible to get a session variable from the unique id? E.g. $_SESSION['number1'];?

Mohammad Faisal Over a year ago

@Amyunimus: what do you mean by unique id here? As I see, number1, number2 ... are in html form

Amyunimus Over a year ago

Does $_SESSION[variable] always grab the value by the name of the input, or would it be possible to get the value from the id of the input (when it differs from name, as in your example.)?

Ross · Accepted Answer · 2010-09-25 20:56:59Z

1

session_register is deprecated so no need to use it.

just

<?php 
session_start();
$_SESSION['number'] = $_POST['number'];
echo "Number = ". $_SESSION['number'];
?>

should do the trick.

also your form action is messed up:

<form action="process.php" method"post">

should be

<form action="process.php" method="post">

answered Sep 25, 2010 at 20:56

Ross

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Comments

Arc · Accepted Answer · 2010-09-25 20:59:05Z

0

method"post" should be method="post". This is why it sends as a GET request, therefore $_POST['number'] will be undefined.

And yes, do not use session_register().

answered Sep 25, 2010 at 20:59

Arc

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