Additinally, upon looking at the session files in:
C:/apache/tmp:
I get from session file from script session_1a.php:
products|s:23:"a:1:{i:0;s:6:"Tardis";}";
...................
However, looking at session file from script session_1.php:
I get:
products|s:2:"N;";
--
"Anthony Ritter" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Sure.
>
> Here it is.
>
> There are three scripts.
>
> session_1.php: the original form script.
> session_1a.php: a revised script with a conditional else.
> session_2.php: the receiving script for the session array variable.
>
> Running script 1a and 2 works fine.
>
> However the original script 1 and 2 gives me a error when returning to the
> contents page the first time - it then fills the contents starting with
the
> number 2 on subsequent page loads.
>
> as in:
> 1.
> 2. Hal 2000
> 3. Sonic Screwdriver
>
> Try it and see and let me know.
> Thank you.
> TR
> .............................
>
>
> // this is the original script
> // script session_1.php
>
> <?php
> session_start();
> ?>
> <html>
> <head>
> <title>Storing an array with a session</title>
> </head>
> <body>
> <h1>Product Choice Page</h1>
> <?php
> if (isset($_POST[form_products])) {
> if (!empty($_SESSION[products])) {
> $products = array_unique(
> array_merge(unserialize($_SESSION[products]),
> $_POST[form_products]));
> }
> $_SESSION[products] = serialize($products);
> print "<p>Your products have been registered!</p>";
> }
> ?>
> <form method="POST" action="<?php $_SERVER[PHP_SELF] ?>">
> <P>Select some products:<br>
> <select name="form_products[]" multiple size=3>
> <option>Sonic Screwdriver</option>
> <option>Hal 2000</option>
> <option>Tardis</option>
> <option>ORAC</option>
> <option>Transporter bracelet</option>
> </select>
> <br><br>
> <input type="submit" value="choose">
> </form>
> <br><br>
> <a href="session_2.php">content page</a>
> </body>
> </html>
>
> ...............
> //this is a revised script with a conditional else
> //script session_1a.php
> <?php
> session_start();
> ?>
> <html>
> <head>
> <title>Storing an array with a session</title>
> </head>
> <body>
> <h1>Product Choice Page</h1>
>
> <?php
> if (isset($_POST['form_products'])) {
> if (!empty($_SESSION['products'])) {
> $products = array_unique(
> array_merge(unserialize($_SESSION['products']),
> $_POST['form_products']));
> }else{ //this conditional has been added
> $products = $_POST['form_products'] ;
> }
> $_SESSION['products'] = serialize($products);
> print "<p>Your products have been registered!</p>";
> }
> ?>
>
> <form method="POST" action="<?php $_SERVER[PHP_SELF] ?>">
> <P>Select some products:<br>
> <select name="form_products[]" multiple size=3>
> <option>Sonic Screwdriver</option>
> <option>Hal 2000</option>
> <option>Tardis</option>
> <option>ORAC</option>
> <option>Transporter bracelet</option>
> </select>
> <br><br>
> <input type="submit" value="choose">
> </form>
> <br><br>
> <a href="session_2.php">content page</a>
> </body>
> </html>
> ..............
> //this is session_2.php
>
> <?php
> session_start();
> ?>
> <html>
> <head>
> <title>Listing 16.5 Accessing session variables</title>
> </head>
> <body>
> <h1> Content Page</h1>
> <?php
> if (isset($_SESSION[products])) {
> print "<b>Your cart:</b><ol>\n";
> foreach (unserialize($_SESSION[products]) as $p) {
> print "<li>$p";
> }
> print "</ol>";
> }
> ?>
> <a href="session_1.php">Back to product choice page</a>
> </body>
> </html>
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