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How to remove the item from the cart if the quantity is 0? I have included my code below that I am confused about how to implement this on. 0) { $_SESSION['quant'][$x] = $_POST[$quant_id]; } elseif($_POST[$quant_id] == 0) { //HOW DO I REMOVE THE ITEM FROM THE CART IF QUANTITY IS = 0? } else { echo "Quantity must be greater than 0 to purchase."; } } } if(isset($_POST['remove'])) { //HOW DO I REMOVE THE ITEM FROM THE CART IF THE "REMOVE" BUTTON IS CLICKED? } if(isset($_POST['submit_order'])) { header("location: order.php"); } if(!isset($_SESSION['product_id'])) { echo 'The cart is empty!'; } if($_POST['clear_cart']) { session_unset(); echo 'Your cart is empty'; echo 'Continue Shopping'; } $t_open = 'NameEachQtyDeleteTotal'; $t_middle = ''; $t_close = ''; $total = 0; ?> '; $t_middle .= '' .$_SESSION['name'][$x].''; $t_middle .= '$' .$_SESSION['price'][$x].''; $t_middle .= ''; //IF REMOVE IMAGE IS CLICKED ITEM IS REMOVED FROM CART $t_middle .= 'Delete'; //FIX?? $t_middle .= '$' .($_SESSION['price'][$x] * $_SESSION['quant'][$x]).''; $t_middle .= ''; $total += ($_SESSION['price'][$x] * $_SESSION['quant'][$x]); } $t_middle .= 'Grand Total: $'.$total.''; $t = $t_open.$t_middle.$t_close; echo $t; ?> Continue Shopping

How to remove the item from the cart if the quantity is 0? I have included my code below that I am confused about how to implement this on. 0) { $_SESSION['quant'][$x] = $_POST[$quant_id]; } elseif($_POST[$quant_id] == 0) { //HOW DO I REMOVE THE ITEM FROM THE CART IF QUANTITY IS = 0? } else { echo "Quantity must be greater than 0 to purchase."; } } } if(isset($_POST['remove'])) { //HOW DO I REMOVE THE ITEM FROM THE CART IF THE "REMOVE" BUTTON IS CLICKED? } if(isset($_POST['submit_order'])) { header("location: order.php"); } if(!isset($_SESSION['product_id'])) { echo 'The cart is empty!'; } if($_POST['clear_cart']) { session_unset(); echo 'Your cart is empty'; echo 'Continue Shopping'; } $t_open = 'NameEachQtyDeleteTotal'; $t_middle = ''; $t_close = ''; $total = 0; ?> '; $t_middle .= '' .$_SESSION['name'][$x].''; $t_middle .= '$' .$_SESSION['price'][$x].''; $t_middle .= ''; //IF REMOVE IMAGE IS CLICKED ITEM IS REMOVED FROM CART $t_middle .= 'Delete'; //FIX?? $t_middle .= '$' .($_SESSION['price'][$x] * $_SESSION['quant'][$x]).''; $t_middle .= ''; $total += ($_SESSION['price'][$x] * $_SESSION['quant'][$x]); } $t_middle .= 'Grand Total: $'.$total.''; $t = $t_open.$t_middle.$t_close; echo $t; ?> Continue Shopping

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question

How to remove the item from the cart if the quantity is 0?

I have included my code below that I am confused about how to implement this on.

 

<?php
  session_start();
  $page = 'cart';

  //DATABASE CONNECTION INFO
  include_once ('includes/database.php');
  include_once ('includes/header.php');

  if(!isset($_COOKIE['loggedIn']))
  {
    header("location: login.php");
  }

  if (isset($_POST['update']))
  {
    for ($x = 0; $x < sizeof($_SESSION['quant']); $x++)
    {
      $quant_id = 'quant_'.$x;
      if($_POST[$quant_id] > 0)
      {
        $_SESSION['quant'][$x] = $_POST[$quant_id];
      }
      elseif($_POST[$quant_id] == 0)
      {
        //HOW DO I REMOVE THE ITEM FROM THE CART IF QUANTITY IS = 0?
      }
      else
      {
        echo "Quantity must be greater than 0 to purchase.";
      }
    }
  }

  if(isset($_POST['remove']))
  {
    //HOW DO I REMOVE THE ITEM FROM THE CART IF THE "REMOVE" BUTTON IS CLICKED?
  }

  if(isset($_POST['submit_order']))
  {
    header("location: order.php");
  }

  if(!isset($_SESSION['product_id']))
  {
    echo '<h2>The cart is empty!</h2>';
  }

  if($_POST['clear_cart'])
  {
    session_unset();
    echo '<p>Your cart is empty</p>';
    echo '<p><a href="catalog.php" class="button">Continue Shopping</a></p>';
  }

  $t_open = '<table><tr><th>Name</th><th>Each</th><th>Qty</th><th>Delete</th><th>Total</th></tr>';
  $t_middle = '';
  $t_close = '</table>';
  $total = 0;
?>

<form method ="POST">
  <?php
    for ($x = 0; $x < sizeof($_SESSION['product_id']); $x++)
    {
      $t_middle .= '<tr>';
      $t_middle .= '<td class="name">' .$_SESSION['name'][$x].'</td>';
      $t_middle .= '<td class="each">$' .$_SESSION['price'][$x].'</td>';
      $t_middle .= '<td class="qty"><input name="quant_'.$x.'" type="text" value="'.$_SESSION['quant'][$x].'"></input></td>';
      //IF REMOVE IMAGE IS CLICKED ITEM IS REMOVED FROM CART
      $t_middle .= '<td class="delete"><a href="#" name="remove">Delete</a></td>'; //FIX??
      $t_middle .= '<td class="total">$' .($_SESSION['price'][$x] * $_SESSION['quant'][$x]).'</td>';
      $t_middle .= '</tr>';
      $total += ($_SESSION['price'][$x] * $_SESSION['quant'][$x]);
    }
    $t_middle .= '<tr><td colspan ="4">Grand Total: </td><td>$'.$total.'</td></tr>';
    $t = $t_open.$t_middle.$t_close;
    echo $t;
  ?>

  <input name="update" class="button" type="submit" value="Update Cart">
  <input name="clear_cart" class="button" type="submit" value="Clear Cart">
  <input name="submit_order" class="button" type="submit" value="Submit Order">
    <?php
      if(isset($_POST['submit_order']))
      {  
        header('location:order.php');
      }
    ?>
  <a href="catalog.php" class="button">Continue Shopping</a>
</form>

<?php
  include_once ('includes/footer.php');
?>
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