Counting button clicks:

Collapse
This topic is closed.
X
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Antoni
    #1

    Counting button clicks:

    Hello,

    I was trying to write a simple shopping example, which allows the user
    to select two poducts and we kept a counter of each item. In this
    code, the sessions are created, but the files value does not increase.

    I would appreciate some guidance.

    Thank you

    <?php
    session_save_pa th("c:");
    session_registe r("item1");
    session_registe r("item2");
    ?>

    <?php
    if(isset($_GET['Item1'])){
    $GLOBALS["item1"]++;
    }

    if(isset($_GET['Item2'])){
    $GLOBALS["item2"]++;
    }
    ?>

    <html>
    <head>
    <title>Test Page</title>
    </head>

    <body>
    <form>
    <input type="submit" name="Item1" value="Item 1">
    <input type="submit" name="Item2" value="Item 2">
    </form>
    </body>

    </html>
    Tags: None
    • Pedro Graca
      #2
      Re: Counting button clicks:

      Antoni wrote:[color=blue]
      > I was trying to write a simple shopping example, which allows the user
      > to select two poducts and we kept a counter of each item. In this
      > code, the sessions are created, but the files value does not increase.
      >
      > I would appreciate some guidance.
      >
      > Thank you
      >
      > <?php
      > session_save_pa th("c:");[/color]

      session_save_pa th('c:\\'); # I don't like "c:" :)
      # better yet, IMHO, is to configure php.ini and never worry about it

      # You never started the session
      session_start() ;
      [color=blue]
      > session_registe r("item1");
      > session_registe r("item2");[/color]

      # session_registe r() and register_global s=Off in php.ini seem to not
      # work well. I never used session_registe r(). I'd do that as

      if (!isset($_SESSI ON['item1'])) $_SESSION['item1'] = 0;
      if (!isset($_SESSI ON['item2'])) $_SESSION['item2'] = 0;
      [color=blue]
      > ?>
      >
      > <?php
      > if(isset($_GET['Item1'])){
      > $GLOBALS["item1"]++;[/color]

      # Use the session variable directly
      $_SESSION['item1']++;
      [color=blue]
      > }
      >
      > if(isset($_GET['Item2'])){
      > $GLOBALS["item2"]++;[/color]

      $_SESSION['item2']++;
      [color=blue]
      > }
      > ?>
      >
      > <html>
      > <head>
      > <title>Test Page</title>
      > </head>
      >
      > <body>
      > <form>
      > <input type="submit" name="Item1" value="Item 1">
      > <input type="submit" name="Item2" value="Item 2">
      > </form>[/color]

      <!-- you don't ever display the current click count -->
      <p>Number of Item 1 clicks: <?php echo $_SESSION['item1']; ?></p>
      <p>Number of Item 2 clicks: <?php echo $_SESSION['item2']; ?></p>
      [color=blue]
      > </body>
      >
      > </html>[/color]


      --
      USENET would be a better place if everybody read: : mail address :
      http://www.catb.org/~esr/faqs/smart-questions.html : is valid for :
      http://www.netmeister.org/news/learn2quote2.html : "text/plain" :
      http://www.expita.com/nomime.html : to 10K bytes :

        Comment

        • Antoni
          #3
          Re: Counting button clicks:

          Hello,

          I changed the code, and looked again at the session files. Though I
          notieced all the files included item1|i:0;item2 |i:0;

          My php text includes an example using the (SID) tool with session,
          would you recommend using this tool?

          Thank you

          <?php
          session_save_pa th('c:\\');
          session_start() ;
          if (!isset($_SESSI ON['item1'])) $_SESSION['item1'] = 0;
          if (!isset($_SESSI ON['item2'])) $_SESSION['item2'] = 0;

          if(isset($_GET['Item1'])){
          $_SESSION['item1']++;
          }
          if(isset($_GET['Item2'])){
          $_SESSION['item2']++;
          }
          ?>

          <html>
          <head>
          <title>Test Page</title>
          </head>

          <body>

          <form>
          <input type="submit" name="Item1" value="Item 1">
          <input type="submit" name="Item2" value="Item 2">

          <p>Number of Item 1 clicks: <?php echo $_SESSION['item1']; ?></p>
          <p>Number of Item 2 clicks: <?php echo $_SESSION['item2']; ?></p>
          </form>

          </body>
          </html>

            Comment

            • Pedro Graca
              #4
              Re: Counting button clicks:

              Antoni wrote:[color=blue]
              > I changed the code, and looked again at the session files. Though I
              > notieced all the files included item1|i:0;item2 |i:0;
              >
              > My php text includes an example using the (SID) tool with session,
              > would you recommend using this tool?[/color]

              I guess your problem is that the webserver doesn't have permission to
              change the session files. Try showing all errors, warnings, and notices
              when you run your example.
              [color=blue]
              > Thank you
              >
              > <?php[/color]

              ### add these two lines to your script
              ### right after the php opening tag
              error_reporting (E_ALL);
              ini_set('displa y_errors', '1');

              (snip code that works for me ...)

              --
              USENET would be a better place if everybody read: : mail address :
              http://www.catb.org/~esr/faqs/smart-questions.html : is valid for :
              http://www.netmeister.org/news/learn2quote2.html : "text/plain" :
              http://www.expita.com/nomime.html : to 10K bytes :

                Comment

                Previous template Next
                Working...