session

[ShaolinF]

Hi,

I have the 3 following radio boxes and I want to add whichever one is selected into a session, how would I do this ?

 

<input type="radio" name="group2" value="Water"> Water<br>

<input type="radio" name="group2" value="Beer"> Beer<br>

<input type="radio" name="group2" value="Wine" checked> Wine<br>

[Stooney]

switch($_POST['group2']){
   case 'Water':
       $_SESSION['group2']=$group2;
       break;
   case 'Beer':
       $_SESSION['group2']=$group2;
       break;
   case 'Wine':
       $_SESSION['group2']=$group2;
       break; }

 

edit: forgot the breaks

[revraz]

Why do you need CASEs when a radio can only send one of the values.

[Stooney]

A switch will execute the code you want based on the value of the variable, just like if and else if.  Makes sense to me at least.

[revraz]

They all do the same thing, there is no need.  Just set the radio name to the session variable.

[CMC]

Yup that switch statement will work for sure. Using an if statement though is less code for the same function.

 

if(isset($_POST['group2'])){
  $_SESSION['group2'] = $_POST['group2'];
}

 

Either way will work.

[Stooney]

Oh damn.  You have a point, I'm retarded.    Listen to revraz. 

[revraz]

no biggy, I was just curious.  Some times things are done for good reasons and I like to learn too.

[PC Nerd]

you dont even need to use the case.

 

 

$_SESSION[group2'] = $_POST['group2'];

 

just move it directly into the session array

 

*** assumign youve validated all data at he top of the page etc.

[ShaolinF]

Thanks. How do I validate ? and what does isset mean ?

[revraz]

Validate means you check the variable before you send it and sanitize it for xss injections.

 

ISSET means if something is set.

[CMC]

isset checks if the variable is set.

Ex:

 

$submit = $_POST['submit'];
//check if the form has been submitted
if(isset($submit)){
echo "The form has been submitted!";
}else{
//otherwise if the form hasn't been submitted, display the form 
echo "<form action=\"".$_SERVER['PHP_SELF']."\" method=\"post\">";
echo "<input type=\"submit\" value=\"Submit\" name=\"submit\">";
}

 

What that script does is it checks if a user has pressed the submit button. If they have pressed the submit button (it is checked using isset), it displays the message 'The form has been submitted'. If they have not clicked submit, it will show them the form. By checking if the form has been submitted using isset, this prevents the script from automatically being run when someone visits the page.

 

PHP isset