unset() is not unsetting!

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  • Xerxes
    #1

    unset() is not unsetting!

    Hi,
    I have a cart, setup as an associative array (itemid=>qty). When the
    cart is displayed, the quantity field is an input box and the value can
    be changed to add/remove an item:
    echo '<input type = "text" name = "'.$itemid. '" value = "'.$qty.'" size
    = "3">';

    when the "Save changes" button on the page that displays thecart is
    pressed, a hidden field called "save" is set and the form is submitted.

    session_start() ;
    if(isset($_POST['save']))
    {
    foreach ($_SESSION['cart'] as $itemid => $qty)
    {
    $new_qty = $_POST[$optionid]; // I used (int)
    $_POST[$optionid], didn't help
    if($new_qty == 0) // Removing item?
    {
    // Search the cart for items dependent on the item being removed
    if (!($result = check_required( $optionid,
    $_SESSION['builderid']))) { // this function returns FALSE
    unset($_SESSION['cart'][$optionid]);
    unset($_SESSION['optionid']);
    }
    .....
    }
    }
    This things seems to go into an infinite loop. It unsets, say item 4000,
    then goes back and tries to remove it again, and again. I used
    error_log() function to see what is going on and it seems that the value
    of the cart['itemid'] is unset but for some reason it is still there;
    that particualr item keeps showing up.

    Thanks for your help.



    Tags: None
    • Xerxes
      #2
      Re: unset() is not unsetting!

      "Xerxes" <ashkaan57@hotm ail.com> wrote in message
      news:21475b9193 766a5eb5562f553 0561c5b@news.te ranews.com...[color=blue]
      > Hi,
      > I have a cart, setup as an associative array (itemid=>qty). When the
      > cart is displayed, the quantity field is an input box and the value[/color]
      can[color=blue]
      > be changed to add/remove an item:
      > echo '<input type = "text" name = "'.$itemid. '" value = "'.$qty.'"[/color]
      size[color=blue]
      > = "3">';
      >
      > when the "Save changes" button on the page that displays thecart is
      > pressed, a hidden field called "save" is set and the form is[/color]
      submitted.[color=blue]
      >
      > session_start() ;
      > if(isset($_POST['save']))
      > {
      > foreach ($_SESSION['cart'] as $itemid => $qty)
      > {
      > $new_qty = $_POST[$optionid]; // I used (int)
      > $_POST[$optionid], didn't help
      > if($new_qty == 0) // Removing item?
      > {
      > // Search the cart for items dependent on the item being[/color]
      removed[color=blue]
      > if (!($result = check_required( $optionid,
      > $_SESSION['builderid']))) { // this function returns FALSE
      > unset($_SESSION['cart'][$optionid]);
      > unset($_SESSION['optionid']);
      > }
      > ....
      > }
      > }
      > This things seems to go into an infinite loop. It unsets, say item[/color]
      4000,[color=blue]
      > then goes back and tries to remove it again, and again. I used
      > error_log() function to see what is going on and it seems that the[/color]
      value[color=blue]
      > of the cart['itemid'] is unset but for some reason it is still there;
      > that particualr item keeps showing up.
      >
      > Thanks for your help.
      >[/color]

      Never mind about this issue (or non-issue), it was caused by a stupid
      logic problem!


        Comment

        • Pedro Graca
          #3
          Re: unset() is not unsetting!

          Xerxes wrote:[color=blue]
          > Hi,
          > I have a cart, setup as an associative array (itemid=>qty). When the
          > cart is displayed, the quantity field is an input box and the value can
          > be changed to add/remove an item:
          > echo '<input type = "text" name = "'.$itemid. '" value = "'.$qty.'" size
          >= "3">';
          >
          > when the "Save changes" button on the page that displays thecart is
          > pressed, a hidden field called "save" is set and the form is submitted.
          >[/color]

          turn on error reporting:

          error_reporting (E_ALL);
          ini_set(diplay_ errors', '1');
          [color=blue]
          > session_start() ;
          > if(isset($_POST['save']))
          > {
          > foreach ($_SESSION['cart'] as $itemid => $qty)
          > {
          > $new_qty = $_POST[$optionid]; // I used (int) $_POST[$optionid], didn't help[/color]

          What is $optionid ?
          [color=blue]
          > if($new_qty == 0) // Removing item?
          > {
          > // Search the cart for items dependent on the item being removed
          > if (!($result = check_required( $optionid,
          > $_SESSION['builderid']))) { // this function returns FALSE
          > unset($_SESSION['cart'][$optionid]);[/color]

          Changing the array that controls the loop inside the loop ?
          I don't like it, but guess it's ok.
          [color=blue]
          > unset($_SESSION['optionid']);
          > }
          > ....
          > }
          > }
          > This things seems to go into an infinite loop. It unsets, say item 4000,
          > then goes back and tries to remove it again, and again. I used
          > error_log() function to see what is going on and it seems that the value
          > of the cart['itemid'] is unset but for some reason it is still there;
          > that particualr item keeps showing up.[/color]

          Perhaps you're mixing $optionid with 'optionid'
          or $optionid with $itemid

          --
          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" :
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            Comment

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