Problem with this code

Benny007

Hi,

I'm writting a very basic "Add to Cart" script - the code is below in 2 parts - can anyone see any problems as to why the variables are not being displayed on the 2nd page? - Also for an added bonus - if someone could figure this out - would you know how to utilize the "Unset" function so a "Delete from cart" - button can be displayed nxt to each result?

If I am going about this the wrong way or can offer me advice I would appreciated.

Page1

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body bgcolor="#FFFFFF">
<form method="post" action="basket.php" name="test">
  <p> 
    <input type="checkbox" name="check1" value="Company 1">
    <input type="checkbox" name="check2" value="Company 2">
    <input type="checkbox" name="check3" value="Company 3">
    <input type="checkbox" name="check4" value="Company 4">
    <input type="checkbox" name="check5" value="Company 5">
  </p>
  <p>
    <input type="submit" name="Submit" value="Submit">
  </p>
</form>
</body>
</html>

Page2

<?php 
// start the session 
session_start(); 
header("Cache-control: private"); //IE 6 Fix 

echo "<strong>Franchise Selection</strong><br />"; 

// Get the user's input from the form 
   $name = $_POST['name']; 

// Register session key with the value 
   $_SESSION['name'] = $name; 

// Display the sssion information: 

// Get the user's input from the form
if(isset($_POST['check1'])) {
$_SESSION['check'][] = $_POST['check1'];
}
if(isset($_POST['check2'])) {
$_SESSION['check'][] = $_POST['check2'];
}
if(isset($_POST['check3'])) {
$_SESSION['check'][] = $_POST['check3'];
}
if(isset($_POST['check4'])) {
$_SESSION['check'][] = $_POST['check4'];
}
if(isset($_POST['check5'])) {
$_SESSION['check'][] = $_POST['check5'];
}

// Display the sssion information: 

$num_elements = count ($_SESSION);
// count how many entries in the array
//
echo "<form method='post' action='basket2.php' name='test1'>";
for ($check = 0; $check < $num_elements; ++$check){
echo ("$_SESSION[$check]");
echo "<input type='checkbox' name='$_SESSION[$idx]' value='$_SESSION[$idx]'><br>";
}
echo "<input type='submit' name='Submit' value='Submit'>";
echo "</form>";

//echo $_SESSION['check'];

echo $num_elements;


?> 
Welcome to my website <strong><? echo $_SESSION['name']; ?></strong>!<br /> 
Let's see what happens on the <a href="page3.php">next page.</a><br /><br />

Thank you.

maxpup979

well, the form doesnt have a name field, and that is not how you access the checkboxes you have in the form. There are oodles of pointers on how to figure out the checkbox/array values--but check1,check2 etc isnt it...🙂

Benny007

"check" was just a generic term - i'v ammended the script now to check1, check2 etc.

I thought it looks fine, but somethings going wrong anyone got any ideas?

maxpup979

your values are coming through the page just fine. However, the way you are attempting to access those values is flawed.
$num_elements = count ($SESSION); counts all of the existing elements in the session. I believe what you want is actually:
$num_elements = count ($SESSION['check']);

Then, in your for loop, when you sidplay the value, you probably want:
echo $_SESSION['check'][$check];

I think that should help at least a little...🙂

Benny007

HI Maxpup,

Thank you for your informative reply, please find below the amended code that I have made using your principles, it's still coming up blank? - any ideas? - do you think you could test it if you have time?


<?php  

// start the session 
session_start();  

header("Cache-control: private"); //IE 6 Fix 

echo "<strong>Franchise Selection</strong><br />";  

// Get the user's input from the form 
if(isset($_POST['check1'])) { 
$_SESSION['check'][] = $_POST['check1']; 
} 
if(isset($_POST['check2'])) { 
$_SESSION['check'][] = $_POST['check2']; 
} 
if(isset($_POST['check3'])) { 
$_SESSION['check'][] = $_POST['check3']; 
} 
if(isset($_POST['check4'])) { 
$_SESSION['check'][] = $_POST['check4']; 
} 
if(isset($_POST['check5'])) { 
$_SESSION['check'][] = $_POST['check5']; 
} 

// Display the sssion information: 

$num_elements = count ($_SESSION['check']); 
// count how many entries in the array 
// 
echo $_SESSION['check'][$check];

?>

It's still not displaying any results from the choices on the previous page. Any ideas?

Thank's again.

vfwood

You are not looping thru the values to try and show them.

Should be:

$num_elements = count ($SESSION['check']);

// count how many entries in the array
//
for($a=0;$a<$num_elements;$a++)
{
echo $SESSION['check'][$a];
}

fnsnoop

this is the first page

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body bgcolor="#FFFFFF">
<form method="post" action="basket.php" name="test">
  <p> 
    <input type="checkbox" name="check[]" value="Company 1">
    <input type="checkbox" name="check[]" value="Company 2">
    <input type="checkbox" name="check[]" value="Company 3">
    <input type="checkbox" name="check[]" value="Company 4">
    <input type="checkbox" name="check[]" value="Company 5">
  </p>
  <p>
    <input type="submit" name="Submit" value="Submit">
  </p>
</form>
</body>
</html>

notice the check[], Make it all in to 1 array, its nicer that way.

this is page 2

<?php 
// start the session
session_start(); 

echo "<strong>Franchise Selection</strong><br />"; 

// Get the user's input from the form
   $name = $_POST['name']; 

// Register session key with the value
   $_SESSION['name'] = $name; 

// Display the sssion information:

// Get the user's input from the form
if(isset($_POST['check'])) {
   $_SESSION['check'] = $_POST['check'];
}

// Display the sssion information:

$num_elements = count ($_SESSION['check']);
// count how many entries in the array
//
echo "<form method='post' action='basket2.php' name='test1'>";
for ($check = 0; $check < $num_elements; ++$check){
echo ("$_SESSION[$check]");
echo "<input type='checkbox' name='$_SESSION[$idx]' value='$_SESSION[$idx]'><br>";
}
echo "<input type='submit' name='Submit' value='Submit'>";
echo "</form>";

//echo $_SESSION['check'];

echo $num_elements;


?> 
Welcome to my website <strong><? echo $_SESSION['name']; ?></strong>!<br />
Let's see what happens on the <a href="page3.php">next page.</a><br /><br />