PHP之购物车的代码

该文章记录了购物车的实现代码，仅供参考

book_sc_fns.php

<?php

  include_once('output_fns.php');

include_once('book_fns.php');

include_once('db_fns.php');

include_once("user_auth_fns.php");

include_once("admin_fns.php");

include_once("data_valid_fns.php");

include_once("order_fns.php");

?>

output_fns.php

<?php

function do_html_header($title = '') {

  // print an HTML header

  // declare the session variables we want access to inside the function

  if (!$_SESSION['items']) {

    $_SESSION['items'] = '0';

  }

  if (!$_SESSION['total_price']) {

    $_SESSION['total_price'] = '0.00';

  }

?>

  <html>

  <head>

    <title><?php echo $title; ?></title>

    <style>

      h2 { font-family: Arial, Helvetica, sans-serif; font-size: 22px; color: red; margin: 6px }

      body { font-family: Arial, Helvetica, sans-serif; font-size: 13px }

      li, td { font-family: Arial, Helvetica, sans-serif; font-size: 13px }

      hr { color: #FF0000; width=70%; text-align=center}

      a { color: #000000 }

    </style>

  </head>

  <body>

  <table width="100%" border="0" cellspacing="0" bgcolor="#cccccc">

  <tr>

  <td rowspan="2">

  <a href="index.php"><img src="images/Book-O-Rama.gif" alt="Bookorama" border="0"

       align="left" valign="bottom" height="55" width="325"/></a>

  </td>

  <td align="right" valign="bottom">

  <?php

     if(isset($_SESSION['admin_user'])) {

       echo "&nbsp;";

     } else {

       echo "Total Items = ".$_SESSION['items'];

     }

  ?>

  </td>

  <td align="right" rowspan="2" width="135">

  <?php

     if(isset($_SESSION['admin_user'])) {

       display_button('logout.php', 'log-out', 'Log Out');

     } else {

       display_button('show_cart.php', 'view-cart', 'View Your Shopping Cart');

     }

  ?>

  </tr>

  <tr>

  <td align="right" valign="top">

  <?php

     if(isset($_SESSION['admin_user'])) {

       echo "&nbsp;";

     } else {

       echo "Total Price = $".number_format($_SESSION['total_price'],2);

     }

  ?>

  </td>

  </tr>

  </table>

<?php

  if($title) {

    do_html_heading($title);

  }

}

function do_html_footer() {

  // print an HTML footer

?>

  </body>

  </html>

<?php

}

function do_html_heading($heading) {

  // print heading

?>

  <h2><?php echo $heading; ?></h2>

<?php

}

function do_html_URL($url, $name) {

  // output URL as link and br

?>

  <a href="<?php echo $url; ?>"><?php echo $name; ?></a><br />

<?php

}

function display_categories($cat_array) {

  if (!is_array($cat_array)) {

     echo "<p>No categories currently available</p>";

     return;

  }

  echo "<ul>";

  foreach ($cat_array as $row)  {

    $url = "show_cat.php?catid=".$row['catid'];

    $title = $row['catname'];

    echo "<li>";

    do_html_url($url, $title);

    echo "</li>";

  }

  echo "</ul>";

  echo "<hr />";

}

function display_books($book_array) {

  //display all books in the array passed in

  if (!is_array($book_array)) {

    echo "<p>No books currently available in this category</p>";

  } else {

    //create table

    echo "<table width=\"100%\" border=\"0\">";

    //create a table row for each book

    foreach ($book_array as $row) {

      $url = "show_book.php?isbn=".$row['isbn'];

      echo "<tr><td>";

      if (@file_exists("images/".$row['isbn'].".jpg")) {

        $title = "<img src=\"images/".$row['isbn'].".jpg\"

                  style=\"border: 1px solid black\"/>";

        do_html_url($url, $title);

      } else {

        echo "&nbsp;";

      }

      echo "</td><td>";

      $title = $row['title']." by ".$row['author'];

      do_html_url($url, $title);

      echo "</td></tr>";

    }

    echo "</table>";

  }

  echo "<hr />";

}

function display_book_details($book) {

  // display all details about this book

  if (is_array($book)) {

    echo "<table><tr>";

    //display the picture if there is one

    if (@file_exists("images/".$book['isbn'].".jpg"))  {

      $size = GetImageSize("images/".$book['isbn'].".jpg");

      if(($size[0] > 0) && ($size[1] > 0)) {

        echo "<td><img src=\"images/".$book['isbn'].".jpg\"

              style=\"border: 1px solid black\"/></td>";

      }

    }

    echo "<td><ul>";

    echo "<li><strong>Author:</strong> ";

    echo $book['author'];

    echo "</li><li><strong>ISBN:</strong> ";

    echo $book['isbn'];

    echo "</li><li><strong>Our Price:</strong> ";

    echo number_format($book['price'], 2);

    echo "</li><li><strong>Description:</strong> ";

    echo $book['description'];

    echo "</li></ul></td></tr></table>";

  } else {

    echo "<p>The details of this book cannot be displayed at this time.</p>";

  }

  echo "<hr />";

}

function display_checkout_form() {

  //display the form that asks for name and address

?>

  <br />

  <table border="0" width="100%" cellspacing="0">

  <form action="purchase.php" method="post">

  <tr><th colspan="2" bgcolor="#cccccc">Your Details</th></tr>

  <tr>

    <td>Name</td>

    <td><input type="text" name="name" value="" maxlength="40" size="40"/></td>

  </tr>

  <tr>

    <td>Address</td>

    <td><input type="text" name="address" value="" maxlength="40" size="40"/></td>

  </tr>

  <tr>

    <td>City/Suburb</td>

    <td><input type="text" name="city" value="" maxlength="20" size="40"/></td>

  </tr>

  <tr>

    <td>State/Province</td>

    <td><input type="text" name="state" value="" maxlength="20" size="40"/></td>

  </tr>

  <tr>

    <td>Postal Code or Zip Code</td>

    <td><input type="text" name="zip" value="" maxlength="10" size="40"/></td>

  </tr>

  <tr>

    <td>Country</td>

    <td><input type="text" name="country" value="" maxlength="20" size="40"/></td>

  </tr>

  <tr><th colspan="2" bgcolor="#cccccc">Shipping Address (leave blank if as above)</th></tr>

  <tr>

    <td>Name</td>

    <td><input type="text" name="ship_name" value="" maxlength="40" size="40"/></td>

  </tr>

  <tr>

    <td>Address</td>

    <td><input type="text" name="ship_address" value="" maxlength="40" size="40"/></td>

  </tr>

  <tr>

    <td>City/Suburb</td>

    <td><input type="text" name="ship_city" value="" maxlength="20" size="40"/></td>

  </tr>

  <tr>

    <td>State/Province</td>

    <td><input type="text" name="ship_state" value="" maxlength="20" size="40"/></td>

  </tr>

  <tr>

    <td>Postal Code or Zip Code</td>

    <td><input type="text" name="ship_zip" value="" maxlength="10" size="40"/></td>

  </tr>

  <tr>

    <td>Country</td>

    <td><input type="text" name="ship_country" value="" maxlength="20" size="40"/></td>

  </tr>

  <tr>

    <td colspan="2" align="center"><p><strong>Please press Purchase to confirm

         your purchase, or Continue Shopping to add or remove items.</strong></p>

     <?php display_form_button("purchase", "Purchase These Items"); ?>

    </td>

  </tr>

  </form>

  </table><hr />

<?php

}

function display_shipping($shipping) {

  // display table row with shipping cost and total price including shipping

?>

  <table border="0" width="100%" cellspacing="0">

  <tr><td align="left">Shipping</td>

      <td align="right"> <?php echo number_format($shipping, 2); ?></td></tr>

  <tr><th bgcolor="#cccccc" align="left">TOTAL INCLUDING SHIPPING</th>

      <th bgcolor="#cccccc" align="right">$ <?php echo number_format($shipping+$_SESSION['total_price'], 2); ?></th>

  </tr>

  </table><br />

<?php

}

function display_card_form($name) {

  //display form asking for credit card details

?>

  <table border="0" width="100%" cellspacing="0">

  <form action="process.php" method="post">

  <tr><th colspan="2" bgcolor="#cccccc">Credit Card Details</th></tr>

  <tr>

    <td>Type</td>

    <td><select name="card_type">

        <option value="VISA">VISA</option>

        <option value="MasterCard">MasterCard</option>

        <option value="American Express">American Express</option>

        </select>

    </td>

  </tr>

  <tr>

    <td>Number</td>

    <td><input type="text" name="card_number" value="" maxlength="16" size="40"></td>

  </tr>

  <tr>

    <td>AMEX code (if required)</td>

    <td><input type="text" name="amex_code" value="" maxlength="4" size="4"></td>

  </tr>

  <tr>

    <td>Expiry Date</td>

    <td>Month

       <select name="card_month">

       <option value="01">01</option>

       <option value="02">02</option>

       <option value="03">03</option>

       <option value="04">04</option>

       <option value="05">05</option>

       <option value="06">06</option>

       <option value="07">07</option>

       <option value="08">08</option>

       <option value="09">09</option>

       <option value="10">10</option>

       <option value="11">11</option>

       <option value="12">12</option>

       </select>

       Year

       <select name="card_year">

       <?

       for ($y = date("Y"); $y < date("Y") + 10; $y++) {

         echo "<option value=\"".$y."\">".$y."</option>";

       }

       ?>

       </select>

  </tr>

  <tr>

    <td>Name on Card</td>

    <td><input type="text" name="card_name" value = "<?php echo $name; ?>" maxlength="40" size="40"></td>

  </tr>

  <tr>

    <td colspan="2" align="center">

      <p><strong>Please press Purchase to confirm your purchase, or Continue Shopping to

      add or remove items</strong></p>

     <?php display_form_button('purchase', 'Purchase These Items'); ?>

    </td>

  </tr>

  </table>

<?php

}

function display_cart($cart, $change = true, $images = 1) {

  // display items in shopping cart

  // optionally allow changes (true or false)

  // optionally include images (1 - yes, 0 - no)

   echo "<table border=\"0\" width=\"100%\" cellspacing=\"0\">

         <form action=\"show_cart.php\" method=\"post\">

         <tr><th colspan=\"".(1 + $images)."\" bgcolor=\"#cccccc\">Item</th>

         <th bgcolor=\"#cccccc\">Price</th>

         <th bgcolor=\"#cccccc\">Quantity</th>

         <th bgcolor=\"#cccccc\">Total</th>

         </tr>";

  //display each item as a table row

  foreach ($cart as $isbn => $qty)  {

    $book = get_book_details($isbn);

    echo "<tr>";

    if($images == true) {

      echo "<td align=\"left\">";

      if (file_exists("images/".$isbn.".jpg")) {

         $size = GetImageSize("images/".$isbn.".jpg");

         if(($size[0] > 0) && ($size[1] > 0)) {

           echo "<img src=\"images/".$isbn.".jpg\"

                  style=\"border: 1px solid black\"

                  width=\"".($size[0]/3)."\"

                  height=\"".($size[1]/3)."\"/>";

         }

      } else {

         echo "&nbsp;";

      }

      echo "</td>";

    }

    echo "<td align=\"left\">

          <a href=\"show_book.php?isbn=".$isbn."\">".$book['title']."</a>

          by ".$book['author']."</td>

          <td align=\"center\">\$".number_format($book['price'], 2)."</td>

          <td align=\"center\">";

    // if we allow changes, quantities are in text boxes

    if ($change == true) {

      echo "<input type=\"text\" name=\"".$isbn."\" value=\"".$qty."\" size=\"3\">";

    } else {

      echo $qty;

    }

    echo "</td><td align=\"center\">\$".number_format($book['price']*$qty,2)."</td></tr>\n";

  }

  // display total row

  echo "<tr>

        <th colspan=\"".(2+$images)."\" bgcolor=\"#cccccc\">&nbsp;</td>

        <th align=\"center\" bgcolor=\"#cccccc\">".$_SESSION['items']."</th>

        <th align=\"center\" bgcolor=\"#cccccc\">

            \$".number_format($_SESSION['total_price'], 2)."

        </th>

        </tr>";

  // display save change button

  if($change == true) {

    echo "<tr>

          <td colspan=\"".(2+$images)."\">&nbsp;</td>

          <td align=\"center\">

             <input type=\"hidden\" name=\"save\" value=\"true\"/>

             <input type=\"image\" src=\"images/save-changes.gif\"

                    border=\"0\" alt=\"Save Changes\"/>

          </td>

          <td>&nbsp;</td>

          </tr>";

  }

  echo "</form></table>";

}

function display_login_form() {

  // dispaly form asking for name and password

?>

 <form method="post" action="admin.php">

 <table bgcolor="#cccccc">

   <tr>

     <td>Username:</td>

     <td><input type="text" name="username"/></td></tr>

   <tr>

     <td>Password:</td>

     <td><input type="password" name="passwd"/></td></tr>

   <tr>

     <td colspan="2" align="center">

     <input type="submit" value="Log in"/></td></tr>

   <tr>

 </table></form>

<?php

}

function display_admin_menu() {

?>

<br />

<a href="index.php">Go to main site</a><br />

<a href="insert_category_form.php">Add a new category</a><br />

<a href="insert_book_form.php">Add a new book</a><br />

<a href="change_password_form.php">Change admin password</a><br />

<?php

}

function display_button($target, $image, $alt) {

  echo "<div align=\"center\"><a href=\"".$target."\">

          <img src=\"images/".$image.".gif\"

           alt=\"".$alt."\" border=\"0\" height=\"50\"

           width=\"135\"/></a></div>";

}

function display_form_button($image, $alt) {

  echo "<div align=\"center\"><input type=\"image\"

           src=\"images/".$image.".gif\"

           alt=\"".$alt."\" border=\"0\" height=\"50\"

           width=\"135\"/></div>";

}

?>

book_fns.php

<?php

function get_categories() {

  $conn = db_connect();

  $query = "select catid, catname from categories";

  $result = @$conn -> query($query);

  if (!$result) {

    return false;

  }

  $num_cats = @$result -> num_rows;

  if ($num_cats == 0) {

    return false;

  }

  $result = db_result_to_array($result);

  return $result;

}

function get_category_name($catid) {

  $conn = db_connect();

  $query = "select catname from categories where catid = ".$catid."";

  $result = @$conn -> query($query);

  if (!$result) {

    return false;

  }

  $num_cats = @$result -> num_rows;

  if ($num_cats == 0) {

    return false;

  }

  $row = $result -> fetch_object();

  return $row -> catname;

}

function get_books($catid) {

  $conn = db_connect();

  $query = "select * from books where catid = ".$catid."";

  $result = @$conn -> query($query);

  if (!$result) {

    return false;

  }

  $num_cats = @$result -> num_rows;

  if ($num_cats == 0) {

    return false;

  }

  $result = db_result_to_array($result);

  return $result;

}

function get_book_details($isbn) {

  if ((!$isbn) || $isbn == '') {

    return false;

  }

  $conn = db_connect();

  $query = "select * from books where isbn = ".$isbn."";

  $result = @$conn -> query($query);

  if (!$result) {

    return false;

  }

  $row = @$result -> fetch_assoc();

  return $row;

}

function calculate_price($cart) {

  $price = 0;

  if (is_array($cart)) {

    $conn = db_connect();

    foreach ($cart as $isbn => $qty) {

      $query = "select price from books where isbn='".$isbn."'";

      $result = $conn -> query($query);

      if ($result) {

        $items = $result -> fetch_object();

        $item_price = $items -> price;

        $price += $item_price * $qty;

      }

    }

  }

  return $price;

}

function calculate_items($cart) {

  $items = 0;

  if (is_array($cart)) {

    $conn = db_connect();

    foreach ($cart as $isbn => $qty) {

      $items += $qty;

      }

  }

  return $items;

}

function calculate_shipping_cost() {

  return 20.00;

}

?>

db_fns.php

<?php

function db_connect() {

   $result = new mysqli('127.0.0.1', 'book_sc', 'password', 'book_sc');

   if (!$result) {

      return false;

   }

   $result->autocommit(TRUE);

   return $result;

}

function db_result_to_array($result) {

   $res_array = array();

   for ($count=0; $row = $result->fetch_assoc(); $count++) {

     $res_array[$count] = $row;

   }

   return $res_array;

}

?>

user_auth_fns.php

<?php

require_once('db_fns.php');

function login($username, $password) {

// check username and password with db

// if yes, return true

// else return false

  // connect to db

  $conn = db_connect();

  if (!$conn) {

    return 0;

  }

  // check if username is unique

  $result = $conn->query("select * from admin

                         where username='".$username."'

                         and password = sha1('".$password."')");

  if (!$result) {

     return 0;

  }

  if ($result->num_rows>0) {

     return 1;

  } else {

     return 0;

  }

}

function check_admin_user() {

// see if somebody is logged in and notify them if not

  if (isset($_SESSION['admin_user'])) {

    return true;

  } else {

    return false;

  }

}

function change_password($username, $old_password, $new_password) {

// change password for username/old_password to new_password

// return true or false

  // if the old password is right

  // change their password to new_password and return true

  // else return false

  if (login($username, $old_password)) {

    if (!($conn = db_connect())) {

      return false;

    }

    $result = $conn->query("update admin

                            set password = sha1('".$new_password."')

                            where username = '".$username."'");

    if (!$result) {

      return false;  // not changed

    } else {

      return true;  // changed successfully

    }

  } else {

    return false; // old password was wrong

  }

}

?>

admin_fns.php

<?php

// This file contains functions used by the admin interface

// for the Book-O-Rama shopping cart.

function display_category_form($category = '') {

// This displays the category form.

// This form can be used for inserting or editing categories.

// To insert, don't pass any parameters.  This will set $edit

// to false, and the form will go to insert_category.php.

// To update, pass an array containing a category.  The

// form will contain the old data and point to update_category.php.

// It will also add a "Delete category" button.

  // if passed an existing category, proceed in "edit mode"

  $edit = is_array($category);

  // most of the form is in plain HTML with some

  // optional PHP bits throughout

?>

  <form method="post"

      action="<?php echo $edit ? 'edit_category.php' : 'insert_category.php'; ?>">

  <table border="0">

  <tr>

    <td>Category Name:</td>

    <td><input type="text" name="catname" size="40" maxlength="40"

          value="<?php echo $edit ? $category['catname'] : ''; ?>" /></td>

   </tr>

  <tr>

    <td <?php if (!$edit) { echo "colspan=2";} ?> align="center">

      <?php

         if ($edit) {

            echo "<input type=\"hidden\" name=\"catid\" value=\"".$category['catid']."\" />";

         }

      ?>

      <input type="submit"

       value="<?php echo $edit ? 'Update' : 'Add'; ?> Category" /></form>

     </td>

     <?php

        if ($edit) {

          //allow deletion of existing categories

          echo "<td>

                <form method=\"post\" action=\"delete_category.php\">

                <input type=\"hidden\" name=\"catid\" value=\"".$category['catid']."\" />

                <input type=\"submit\" value=\"Delete category\" />

                </form></td>";

       }

     ?>

  </tr>

  </table>

<?php

}

function display_book_form($book = '') {

// This displays the book form.

// It is very similar to the category form.

// This form can be used for inserting or editing books.

// To insert, don't pass any parameters.  This will set $edit

// to false, and the form will go to insert_book.php.

// To update, pass an array containing a book.  The

// form will be displayed with the old data and point to update_book.php.

// It will also add a "Delete book" button.

  // if passed an existing book, proceed in "edit mode"

  $edit = is_array($book);

  // most of the form is in plain HTML with some

  // optional PHP bits throughout

?>

  <form method="post"

        action="<?php echo $edit ? 'edit_book.php' : 'insert_book.php';?>">

  <table border="0">

  <tr>

    <td>ISBN:</td>

    <td><input type="text" name="isbn"

         value="<?php echo $edit ? $book['isbn'] : ''; ?>" /></td>

  </tr>

  <tr>

    <td>Book Title:</td>

    <td><input type="text" name="title"

         value="<?php echo $edit ? $book['title'] : ''; ?>" /></td>

  </tr>

  <tr>

    <td>Book Author:</td>

    <td><input type="text" name="author"

         value="<?php echo $edit ? $book['author'] : ''; ?>" /></td>

   </tr>

   <tr>

      <td>Category:</td>

      <td><select name="catid">

      <?php

          // list of possible categories comes from database

          $cat_array=get_categories();

          foreach ($cat_array as $thiscat) {

               echo "<option value=\"".$thiscat['catid']."\"";

               // if existing book, put in current catgory

               if (($edit) && ($thiscat['catid'] == $book['catid'])) {

                   echo " selected";

               }

               echo ">".$thiscat['catname']."</option>";

          }

          ?>

          </select>

        </td>

   </tr>

   <tr>

    <td>Price:</td>

    <td><input type="text" name="price"

               value="<?php echo $edit ? $book['price'] : ''; ?>" /></td>

   </tr>

   <tr>

     <td>Description:</td>

     <td><textarea rows="3" cols="50"

          name="description"><?php echo $edit ? $book['description'] : ''; ?></textarea></td>

    </tr>

    <tr>

      <td <?php if (!$edit) { echo "colspan=2"; }?> align="center">

         <?php

            if ($edit)

             // we need the old isbn to find book in database

             // if the isbn is being updated

             echo "<input type=\"hidden\" name=\"oldisbn\"

                    value=\"".$book['isbn']."\" />";

         ?>

        <input type="submit"

               value="<?php echo $edit ? 'Update' : 'Add'; ?> Book" />

        </form></td>

        <?php

           if ($edit) {

             echo "<td>

                   <form method=\"post\" action=\"delete_book.php\">

                   <input type=\"hidden\" name=\"isbn\"

                    value=\"".$book['isbn']."\" />

                   <input type=\"submit\" value=\"Delete book\"/>

                   </form></td>";

            }

          ?>

         </td>

      </tr>

  </table>

  </form>

<?php

}

function display_password_form() {

// displays html change password form

?>

   <br />

   <form action="change_password.php" method="post">

   <table width="250" cellpadding="2" cellspacing="0" bgcolor="#cccccc">

   <tr><td>Old password:</td>

       <td><input type="password" name="old_passwd" size="16" maxlength="16" /></td>

   </tr>

   <tr><td>New password:</td>

       <td><input type="password" name="new_passwd" size="16" maxlength="16" /></td>

   </tr>

   <tr><td>Repeat new password:</td>

       <td><input type="password" name="new_passwd2" size="16" maxlength="16" /></td>

   </tr>

   <tr><td colspan=2 align="center"><input type="submit" value="Change password">

   </td></tr>

   </table>

   <br />

<?php

}

function insert_category($catname) {

// inserts a new category into the database

   $conn = db_connect();

   // check category does not already exist

   $query = "select *

             from categories

             where catname='".$catname."'";

   $result = $conn->query($query);

   if ((!$result) || ($result->num_rows!=0)) {

     return false;

   }

   // insert new category

   $query = "insert into categories values

            (0, '".$catname."')";

   $result = $conn->query($query);

   if (!$result) {

     return false;

   } else {

     return true;

   }

}

function insert_book($isbn, $title, $author, $catid, $price, $description) {

// insert a new book into the database

   $conn = db_connect();

   // check book does not already exist

   $query = "select *

             from books

             where isbn='".$isbn."'";

   $result = $conn->query($query);

   if ((!$result) || ($result->num_rows!=0)) {

     return false;

   }

   // insert new book

   $query = "insert into books values

            ('".$isbn."', '".$author."', '".$title."',

             '".$catid."', '".$price."', '".$description."')";

   $result = $conn->query($query);

   if (!$result) {

     return false;

   } else {

     return true;

   }

}

function update_category($catid, $catname) {

// change the name of category with catid in the database

   $conn = db_connect();

   $query = "update categories

             set catname='".$catname."'

             where catid='".$catid."'";

   $result = @$conn->query($query);

   if (!$result) {

     return false;

   } else {

     return true;

   }

}

function update_book($oldisbn, $isbn, $title, $author, $catid,

                     $price, $description) {

// change details of book stored under $oldisbn in

// the database to new details in arguments

   $conn = db_connect();

   $query = "update books

             set isbn= '".$isbn."',

             title = '".$title."',

             author = '".$author."',

             catid = '".$catid."',

             price = '".$price."',

             description = '".$description."'

             where isbn = '".$oldisbn."'";

   $result = @$conn->query($query);

   if (!$result) {

     return false;

   } else {

     return true;

   }

}

function delete_category($catid) {

// Remove the category identified by catid from the db

// If there are books in the category, it will not

// be removed and the function will return false.

   $conn = db_connect();

   // check if there are any books in category

   // to avoid deletion anomalies

   $query = "select *

             from books

             where catid=".$catid."";

   $result = @$conn->query($query);

   if ((!$result) || (@$result->num_rows > 0)) {

     return false;

   }

   $query = "delete from categories

             where catid='".$catid."'";

   $result = @$conn->query($query);

   if (!$result) {

     return false;

   } else {

     return true;

   }

}

function delete_book($isbn) {

// Deletes the book identified by $isbn from the database.

   $conn = db_connect();

   $query = "delete from books

             where isbn='".$isbn."'";

   $result = @$conn->query($query);

   if (!$result) {

     return false;

   } else {

     return true;

   }

}

?>

data_valid_fns.php

<?php

function filled_out($form_vars) {

  // test that each variable has a value

  foreach ($form_vars as $key => $value) {

     if ((!isset($key)) || ($value == '')) {

        return false;

     }

  }

  return true;

}

function valid_email($address) {

  // check an email address is possibly valid

  if (ereg("^[a-zA-Z0-9_\.\-]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-\.]+$", $address)) {

    return true;

  } else {

    return false;

  }

}

?>

order_fns.php

<?php

function process_card($card_details) {

  // connect to payment gateway or

  // use gpg to encrypt and mail or

  // store in DB if you really want to

  return true;

}

function insert_order($order_details) {

  // extract order_details out as variables

  extract($order_details);

  // set shipping address same as address

  if((!$ship_name) && (!$ship_address) && (!$ship_city) && (!$ship_state) && (!$ship_zip) && (!$ship_country)) {

    $ship_name = $name;

    $ship_address = $address;

    $ship_city = $city;

    $ship_state = $state;

    $ship_zip = $zip;

    $ship_country = $country;

  }

  $conn = db_connect();

  // we want to insert the order as a transaction

  // start one by turning off autocommit

  $conn->autocommit(FALSE);

  // insert customer address

  $query = "select customerid from customers where

            name = '".$name."' and address = '".$address."'

            and city = '".$city."' and state = '".$state."'

            and zip = '".$zip."' and country = '".$country."'";

  $result = $conn->query($query);

  if($result->num_rows>0) {

    $customer = $result->fetch_object();

    $customerid = $customer->customerid;

  } else {

    $query = "insert into customers values

            (0, '".$name."','".$address."','".$city."','".$state."','".$zip."','".$country."')";

    $result = $conn->query($query);

    if (!$result) {

       return false;

    }

  }

  $customerid = $conn->insert_id;

  $date = date("Y-m-d");

  $query = "insert into orders values

            (0, '".$customerid."', '".$_SESSION['total_price']."', '".$date."', '".'PARTIAL'."',

             '".$ship_name."', '".$ship_address."', '".$ship_city."', '".$ship_state."',

             '".$ship_zip."', '".$ship_country."')";

  $result = $conn->query($query);

  if (!$result) {

    return false;

  }

  $query = "select orderid from orders where

               customerid = '".$customerid."' and

               amount > (".$_SESSION['total_price']."-.001) and

               amount < (".$_SESSION['total_price']."+.001) and

               date = '".$date."' and

               order_status = 'PARTIAL' and

               ship_name = '".$ship_name."' and

               ship_address = '".$ship_address."' and

               ship_city = '".$ship_city."' and

               ship_state = '".$ship_state."' and

               ship_zip = '".$ship_zip."' and

               ship_country = '".$ship_country."'";

  $result = $conn->query($query);

  if($result->num_rows>0) {

    $order = $result->fetch_object();

    $orderid = $order->orderid;

  } else {

    return false;

  }

  // insert each book

  foreach($_SESSION['cart'] as $isbn => $quantity) {

    $detail = get_book_details($isbn);

    $query = "delete from order_items where

              orderid = '".$orderid."' and isbn = '".$isbn."'";

    $result = $conn->query($query);

    $query = "insert into order_items values

              ('".$orderid."', '".$isbn."', ".$detail['price'].", $quantity)";

    $result = $conn->query($query);

    if(!$result) {

      return false;

    }

  }

  // end transaction

  $conn->commit();

  $conn->autocommit(TRUE);

  return $orderid;

}

?>

index.php

<?php

require_once("book_sc_fns.php");

// The shopping cart needs sessions, so start one

session_start();

// Display header

do_html_header("Book-store");

// Show cat title

echo "<p>Please chose a category: </p>";

$cat_array = get_categories();

display_categories($cat_array);

// If login as admin, show add, delete, edit cat link

if (isset($_SESSION['admin_user'])) {

    display_button("admin.php", "admin-menu", "Admin Menu");

}

do_html_footer();

?>

login.php

<?php

require_once("book_sc_fns.php");

do_html_header("Administration");

display_login_form();

do_html_footer();

?>

logout.php

<?php

// include function files for this application

require_once('book_sc_fns.php');

session_start();

$old_user = $_SESSION['admin_user'];  // store  to test if they *were* logged in

unset($_SESSION['admin_user']);

session_destroy();

// start output html

do_html_header("Logging Out");

if (!empty($old_user)) {

  echo "<p>Logged out.</p>";

  do_html_url("login.php", "Login");

} else {

  // if they weren't logged in but came to this page somehow

  echo "<p>You were not logged in, and so have not been logged out.</p>";

  do_html_url("login.php", "Login");

}

do_html_footer();

?>

admin.php

<?php

require_once("book_sc_fns.php");

session_start();

if ($_POST["username"] && $_POST["passwd"]) {

    $username = $_POST["username"];

    $passwd = $_POST["passwd"];

    if (login($username, $passwd)) {

        $_SESSION["admin_user"] = $username;

    }else {

        do_html_header("Problem:");

        echo "<p>You could not be logged in.<br />

                You must be logged in to view this page.</p>";

        do_html_url("login.php", "Login");

        do_html_footer();

        exit;

    }

}

do_html_header("Administrtion");

if (check_admin_user()) {

    display_admin_menu();

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

insert_book_form.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Add a category");

if (check_admin_user()) {

    display_book_form();

    do_html_url("admin.php", "Back to administration menu");

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

insert_book.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Adding a book");

if (check_admin_user()) {

    if (filled_out($_POST)) {

        $isbn = $_POST['isbn'];

        $title = $_POST['title'];

        $author = $_POST['author'];

        $catid = $_POST['catid'];

        $price = $_POST['price'];

        $description = $_POST['description'];

        if (insert_book($isbn, $title, $author, $catid, $price, $description)) {

            echo "<p>Book <em>".stripslashes($title)."</em> was added to the database.</p>";

        }else {

            echo "<p>Book <em>".stripslashes($title)."</em> could not be added to the database.</p>";

        }

    }else {

        echo "<p>You have not filled out the form. Please try again</p>";

    }

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

insert_category_form.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Add a category");

if (check_admin_user()) {

    display_category_form();

    do_html_url("admin.php", "Back to administration menu");

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

insert_category.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Adding a category");

if (check_admin_user()) {

    if (filled_out($_POST)) {

        $catname = $_POST['catname'];

        if (insert_category($catname)) {

            echo "<p>Category \"".$catname."\" was added to the database.</p>";

        }else {

            echo "<p>Category \"".$catname."\" could not be added to the database.</p>";

        }

    }else {

        echo "<p>You have not filled out the form. Please try again</p>";

    }

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

delete_book.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Deleting book");

if (check_admin_user()) {

    if (isset($_POST['isbn'])) {

        if (delete_book($_POST['isbn'])) {

            echo "<p>Book was deleted.</p>";

        }else {

            echo "<p>Book could not be deleted.</p>";

        }

    }else {

        echo "<p>No Book specified. Please try again</p>";

    }

    do_html_url("admin.php", "Back to administation menu");

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

delete_category.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Deleting category");

if (check_admin_user()) {

    if (isset($_POST['catid'])) {

        if (delete_category($_POST['catid'])) {

            echo "<p>Category was deleted.</p>";

        }else {

            echo "<p>Category could not be deleted.</p>";

        }

    }else {

        echo "<p>No category specified. Please try again</p>";

    }

    do_html_url("admin.php", "Back to administation menu");

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

edit_book_form.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Edit book details");

if (check_admin_user()) {

    if ($book = get_book_details($_GET['isbn'])) {

        display_book_form($book);

    }else {

        echo "<p>Could not retrieve book details.</p>";

    }

    do_html_url("admin.php", "Back to administration menu");

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

edit_book.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Updating book");

if (check_admin_user()) {

    if (filled_out($_POST)) {

        $old_isbn = $_POST['oldisbn'];

        $isbn = $_POST['isbn'];

        $title = $_POST['title'];

        $author = $_POST['author'];

        $catid = $_POST['catid'];

        $price = $_POST['price'];

        $description = $_POST['description'];

        if (update_book($old_isbn, $isbn, $title, $author, $catid, $price, $description)) {

            echo "<p>Book was updated.</p>";

        }else {

            echo "<p>Book could not be updated.</p>";

        }

    }else {

        echo "<p>You have not filled out the form. Please try again</p>";

    }

    do_html_url("admin.php", "Back to administation menu");

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

edit_category_form.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Edit category");

if (check_admin_user()) {

    if ($catname = get_category_name($_GET['catid'])) {

        $catid = $_GET['catid'];

        $cat = compact('catname', 'catid');

        display_category_form($cat);

    }else {

        echo "<p>Could not retrieve catogory details.</p>";

    }

    do_html_url("admin.php", "Back to administration menu");

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

edit_category.php

<?php

require_once("book_sc_fns.php");

session_start();

do_html_header("Updating category");

if (check_admin_user()) {

    if (filled_out($_POST)) {

        if (update_category($_POST['catid'], $_POST['catname'])) {

            echo "<p>Category was updated.</p>";

        }else {

            echo "<p>Category could not be updated.</p>";

        }

    }else {

        echo "<p>You have not filled out the form. Please try again</p>";

    }

    do_html_url("admin.php", "Back to administation menu");

}else {

    echo "<p>You are not authorized to enter the administration area.</p>";

}

do_html_footer();

?>

change_password_form.php

<?php

require_once('book_sc_fns.php');

 session_start();

 do_html_header("Change administrator password");

 check_admin_user();

 display_password_form();

 do_html_url("admin.php", "Back to administration menu");

 do_html_footer();

?>

change_password.php

<?php

 require_once('book_sc_fns.php');

 session_start();

 do_html_header('Changing password');

 check_admin_user();

 if (!filled_out($_POST)) {

   echo "<p>You have not filled out the form completely.<br/>

         Please try again.</p>";

   do_html_url("admin.php", "Back to administration menu");

   do_html_footer();

   exit;

 } else {

   $new_passwd = $_POST['new_passwd'];

   $new_passwd2 = $_POST['new_passwd2'];

   $old_passwd = $_POST['old_passwd'];

   if ($new_passwd != $new_passwd2) {

      echo "<p>Passwords entered were not the same.  Not changed.</p>";

   } else if ((strlen($new_passwd)>16) || (strlen($new_passwd)<6)) {

      echo "<p>New password must be between 6 and 16 characters.  Try again.</p>";

   } else {

      // attempt update

      if (change_password($_SESSION['admin_user'], $old_passwd, $new_passwd)) {

         echo "<p>Password changed.</p>";

      } else {

         echo "<p>Password could not be changed.</p>";

      }

   }

 }

 do_html_url("admin.php", "Back to administration menu");

 do_html_footer();

?>

checkout.php

<?php

include("book_sc_fns.php");

session_start();

do_html_header("Checkout");

if (($_SESSION['cart']) && (array_count_values($_SESSION['cart']))) {

    display_cart($_SESSION['cart'], false, 0);

    display_checkout_form();

}else {

    echo "<p>There are no items in your cart</p>";

}

display_button("show_cart.php", "continue-shopping", "Continue Shopping");

do_html_footer();

?>

process.php

<?php

include("book_sc_fns.php");

session_start();

do_html_header("Checkout");

$card_type = $_POST['card_type'];

$card_number = $_POST['card_number'];

$card_month = $_POST['card_month'];

$card_year = $_POST['card_year'];

$card_name = $_POST['card_name'];

if ($_SESSION["cart"] && ($card_type) && ($card_number)

                    && ($card_month) && ($card_year) && ($card_name)) {

   display_cart($_SESSION['cart'], false, 0);

   display_shipping(calculate_shipping_cost());

   if (process_card($_POST)) {

       session_destroy();

       echo "<p>Thank you for shopping with us.Your order has been placed.</p>";

       display_button("index.php", "continue-shopping", "Continue Shopping");

   }else {

       echo "<p>Could not process your card.Please contact the card issuer or try again.</p>";

       display_button("purchase.php", "back", "Back");

   }

}else {

    echo "<p>You did not fill in all the fields, please try again.</p><hr />";

    display_button("purchase.php", "back", "Back");

}

do_html_footer();

?>

purchase.php

<?php

include("book_sc_fns.php");

session_start();

do_html_header("Checkout");

// Info

$name = $_POST['name'];

$address = $_POST['address'];

$city = $_POST['city'];

$zip = $_POST['zip'];

$country = $_POST['country'];

// Check if filled out

if (($_SESSION['cart']) && ($name) && ($address) && ($city) && ($zip) && ($country)) {

    if ((insert_order($_POST)) != false) {

        display_cart($_SESSION['cart'], false, 0);

        display_shipping(calculate_shipping_cost());

        display_card_form($name);

        display_button('show_cart.php', 'continue-shopping', 'Continu Shopping');

    }else {

      echo "<p>Could not store data, please try again.</p><hr />";

      display_button('checkout.php', 'back', 'back');

    }

}else {

    echo "<p>You did not fill in all the fields, please try again.</p><hr />";

    display_button('checkout.php', 'back', 'back');

}

do_html_footer();

?>

show_book.php

<?php

// include function files for this application

require_once('book_sc_fns.php');

session_start();

$isbn = $_GET['isbn'];

$book = get_book_details($isbn);

do_html_header($book['title']);

display_book_details($book);

$target = "index.php";

if ($book['catid']) {

    $target = "show_cat.php?catid=".$book['catid']."";

}

if (check_admin_user()) {

  display_button("edit_book_form.php?isbn=".$isbn."", "edit-item", "Edit Book");

  display_button("admin.php", "admin-menu", "Admin Menu");

  display_button($target, "continue", "Continue");

}else {

  display_button("show_cart.php?new=".$isbn."", "add-to-cart", "Add ".$book['title']." To My Shopping Cart");

  display_button($target, "continue-shopping", "Continue Shopping");

}

do_html_footer();

?>

show_cart.php

<?php

include("book_sc_fns.php");

session_start();

@$new = $_GET['new'];

if ($new) {

    // If cart is null create a new cat

    if (!isset($_SESSION['cart'])) {

        $_SESSION['cart'] = array();

        $_SESSION['item'] = 0;

        $_SESSION['total_price'] = '0.00';

    }

    // book count

    if (isset($_SESSION['cart'][$new])) {

        $_SESSION['cart'][$new] ++;

    }else {

        $_SESSION['cart'][$new] = 1;

    }

    $_SESSION['total_price'] = calculate_price($_SESSION['cart']);

    $_SESSION['items'] = calculate_items($_SESSION['cart']);

}

// Save

if (isset($_POST['save'])) {

    foreach ($_SESSION['cart'] as $isbn => $qty) {

        if ($_POST[$isbn] == '0') {

            unset($_SESSION['cart'][$isbn]);

        }else {

            $_SESSION['cart'][$isbn] = $_POST[$isbn];

        }

    }

    $_SESSION['total_price'] = calculate_price($_SESSION['cart']);

    $_SESSION['items'] = calculate_items($_SESSION['cart']);

}

do_html_header("Your shopping cart");

// Display the cart

if ($_SESSION['cart'] && (array_count_values($_SESSION['cart']))) {

    display_cart($_SESSION['cart']);

}else {

    echo "<p>There are no items in your cart</p><hr />";

}

$target = "index.php";

if ($new) {

    $detail = get_book_details($new);

    if ($detail['catid']) {

        $target = "show_cat.php?catid=".$detail['catid'];

    }

}

display_button($target, "continue-shopping", "Continue Shopping");

display_button("checkout.php", "go-to-checkout", "Go To Checkout");

do_html_footer();

?>

show_cat.php

<?php

// include function files for this application

require_once('book_sc_fns.php');

session_start();

$catid = $_GET['catid'];

$name = get_category_name($catid);

do_html_header($name);

// Get books

$book_array = get_books($catid);

display_books($book_array);

if (isset($_SESSION['admin_user'])) {

  display_button("index.php", "continue", "Continue Shopping");

  display_button("admin.php", "admin-menu", "Admin Menu");

  display_button("edit_category_form.php?catid=".$catid."", "edit-category", "Edit category");

}else {

  display_button("index.php", "continue-shopping", "Continue Shopping");

}

do_html_footer();

?>

说明

全部文件下载地址：https://pan.baidu.com/s/1pL50Ql9

PHP之购物车的代码的更多相关文章

python学习（8）实例：写一个简单商城购物车的代码
要求: 1.写一段商城程购物车序的代码2.用列表把商城的商品清单存储下来,存到列表 shopping_mail3.购物车的列表为shopping_cart4.用户首先输入工资金额,判断输入为数字5.用 ...
Python简单的购物车小代码
# -*- coding: utf-8 -*- # @Time : 2018-05-31 14:56 # @Author : 超人 # @Email : huxiaojiu111@gmail.com ...
基于jquery右侧悬浮加入购物车代码
分享一款基于jquery右侧悬浮加入购物车代码.这是一款基于jQuery实现的仿天猫右侧悬浮加入购物车菜单代码. 在线预览源码下载实现的代码: <!--左侧产品parabola.js控制 ...
使用MongoDB和JSP实现一个简单的购物车系统
目录 1 问题描述 2 解决方案 2.1 实现功能 2.2 最终运行效果图 2.3 系统功能框架示意图 2.4 有关MongoDB简介及系统环境配置 2.5 核心功能代码讲解 ...
11月14日用AJAX、PHP、SESSION做购物车
购物车网页代码 1.登录界面login.php <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ...
MVVM架构~knockoutjs实现简单的购物车
返回目录概念相关购物车相信大家都用过,很方便,可以将多个商品添加到购物车,并且可以修改购买商品的数据,当然为了用户体验好,在修改数据时,你的价格也会出现变化的,这使用JS可以实现,但我认为,代码量 ...
jquery模拟淘宝购物车
今天要实现的一个功能页面就是利用jquery代码模拟一个淘宝网的购物车结算页面总体页面效果如图: 首先我们要实现的内容的需求有如下几点: 1.在购物车页面中,当选中“全选”复选框时,所有商品前的复选 ...
php做站点购物车你搞懂了吗？
网上购物现已成为时尚,客户选择一个商品将其放入到购物车,然后返回继续购物或者去收银台,这个功能怎样实现呢?今天capucivar就将使用PHP来实现这个购物车的功能. 首先,做一个简单的首页,从数据库 ...
ajax、PHP、session做购物车
购物车网页代码 1.登录界面login.php <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ...

随机推荐

【造轮子】打造一个简单的万能Excel读写工具
大家工作或者平时是不是经常遇到要读写一些简单格式的Excel? shit!~很蛋疼,因为之前吹牛,就搞了个这东西,还算是挺实用,和大家分享下. 厌烦了每次搞简单类型的Excel读写?不怕~来,喜欢流式 ...
C#给PDF文档添加文本和图片页眉
页眉常用于显示文档的附加信息,我们可以在页眉中插入文本或者图形,例如,页码.日期.公司徽标.文档标题.文件名或作者名等等.那么我们如何以编程的方式添加页眉呢?今天,这篇文章向大家分享如何使用了免费组件 ...
Summary of Critical and Exploitable iOS Vulnerabilities in 2016
Summary of Critical and Exploitable iOS Vulnerabilities in 2016 Author:Min (Spark) Zheng, Cererdlong ...
.NetCore MVC中的路由（1）路由配置基础
.NetCore MVC中的路由(1)路由配置基础 0x00 路由在MVC中起到的作用前段时间一直忙于别的事情,终于搞定了继续学习.NetCore.这次学习的主题是MVC中的路由.路由是所有MVC框 ...
【声明】前方不设坑位，不收费！~ 我为NET狂官方学习计划
发个通知,过段时间学习计划相关的东西就出来了,上次写了篇指引文章后有些好奇心颇重的人跟我说:“发现最近群知识库和技能库更新的频率有点大,这是要放大招的节奏啊!” 很多想学习却不知道如何规划的人想要一个 ...
Node.js：path、url、querystring模块
Path模块该模块提供了对文件或目录路径处理的方法,使用require('path')引用. 1.获取文件路径最后部分basename 使用basename(path[,ext])方法来获取路径的最 ...
浅谈JSP注释
HTML注释 JSP文件是由HTML尿急和嵌入的Java程序片段组成的,所以在HTML中的注释同样可以在JSP文件中使用.注释格式: <!-- 欢迎提示信息! ...
css样式之超出隐藏
文本超出部分隐藏,总结两种方法. 1.单行隐藏 html代码 <div class="mi">当文字超过范围的时候,超出部分会隐藏起来.</div> css ...
Android Studio 编译单个module
前期自己要把gradle环境变量配置好在Terminal中gradle命令行编译apk 输入gradle assembleRelease 会编译全部module编译单个modulecd ./xiru ...
Ubuntu下开启php调试模式，显示报错信息
在Ubuntu下php的缺省设置是不显示错误信息的,如果程序出错会显示“无法处理此请求的错误提示”,这在开发环境下非常不方便. 其实我们只要编辑下apache的配置文件就好 1.我的apache 配置 ...

PHP之购物车的代码

book_sc_fns.php

output_fns.php

book_fns.php

db_fns.php

user_auth_fns.php

admin_fns.php

data_valid_fns.php

order_fns.php

index.php

login.php

logout.php

admin.php

insert_book_form.php

insert_book.php

insert_category_form.php

insert_category.php

delete_book.php

delete_category.php

edit_book_form.php

edit_book.php

edit_category_form.php

edit_category.php

change_password_form.php

change_password.php

checkout.php

process.php

purchase.php

show_book.php

show_cart.php

show_cat.php

说明

PHP之购物车的代码的更多相关文章

随机推荐

热门专题