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-<?php
-/**
- * CodeIgniter
- *
- * An open source application development framework for PHP
- *
- * This content is released under the MIT License (MIT)
- *
- * Copyright (c) 2014 - 2019, British Columbia Institute of Technology
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * @package CodeIgniter
- * @author EllisLab Dev Team
- * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
- * @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (http://bcit.ca/)
- * @license http://opensource.org/licenses/MIT MIT License
- * @link https://codeigniter.com
- * @since Version 1.0.0
- * @filesource
- */
-defined('BASEPATH') OR exit('No direct script access allowed');
-
-/**
- * Shopping Cart Class
- *
- * @package CodeIgniter
- * @subpackage Libraries
- * @category Shopping Cart
- * @author EllisLab Dev Team
- * @link https://codeigniter.com/user_guide/libraries/cart.html
- * @deprecated 3.0.0 This class is too specific for CI.
- */
-class CI_Cart {
-
- /**
- * These are the regular expression rules that we use to validate the product ID and product name
- * alpha-numeric, dashes, underscores, or periods
- *
- * @var string
- */
- public $product_id_rules = '\.a-z0-9_-';
-
- /**
- * These are the regular expression rules that we use to validate the product ID and product name
- * alpha-numeric, dashes, underscores, colons or periods
- *
- * @var string
- */
- public $product_name_rules = '\w \-\.\:';
-
- /**
- * only allow safe product names
- *
- * @var bool
- */
- public $product_name_safe = TRUE;
-
- // --------------------------------------------------------------------------
-
- /**
- * Reference to CodeIgniter instance
- *
- * @var object
- */
- protected $CI;
-
- /**
- * Contents of the cart
- *
- * @var array
- */
- protected $_cart_contents = array();
-
- /**
- * Shopping Class Constructor
- *
- * The constructor loads the Session class, used to store the shopping cart contents.
- *
- * @param array
- * @return void
- */
- public function __construct($params = array())
- {
- // Set the super object to a local variable for use later
- $this->CI =& get_instance();
-
- // Are any config settings being passed manually? If so, set them
- $config = is_array($params) ? $params : array();
-
- // Load the Sessions class
- $this->CI->load->driver('session', $config);
-
- // Grab the shopping cart array from the session table
- $this->_cart_contents = $this->CI->session->userdata('cart_contents');
- if ($this->_cart_contents === NULL)
- {
- // No cart exists so we'll set some base values
- $this->_cart_contents = array('cart_total' => 0, 'total_items' => 0);
- }
-
- log_message('info', 'Cart Class Initialized');
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Insert items into the cart and save it to the session table
- *
- * @param array
- * @return bool
- */
- public function insert($items = array())
- {
- // Was any cart data passed? No? Bah...
- if ( ! is_array($items) OR count($items) === 0)
- {
- log_message('error', 'The insert method must be passed an array containing data.');
- return FALSE;
- }
-
- // You can either insert a single product using a one-dimensional array,
- // or multiple products using a multi-dimensional one. The way we
- // determine the array type is by looking for a required array key named "id"
- // at the top level. If it's not found, we will assume it's a multi-dimensional array.
-
- $save_cart = FALSE;
- if (isset($items['id']))
- {
- if (($rowid = $this->_insert($items)))
- {
- $save_cart = TRUE;
- }
- }
- else
- {
- foreach ($items as $val)
- {
- if (is_array($val) && isset($val['id']))
- {
- if ($this->_insert($val))
- {
- $save_cart = TRUE;
- }
- }
- }
- }
-
- // Save the cart data if the insert was successful
- if ($save_cart === TRUE)
- {
- $this->_save_cart();
- return isset($rowid) ? $rowid : TRUE;
- }
-
- return FALSE;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Insert
- *
- * @param array
- * @return bool
- */
- protected function _insert($items = array())
- {
- // Was any cart data passed? No? Bah...
- if ( ! is_array($items) OR count($items) === 0)
- {
- log_message('error', 'The insert method must be passed an array containing data.');
- return FALSE;
- }
-
- // --------------------------------------------------------------------
-
- // Does the $items array contain an id, quantity, price, and name? These are required
- if ( ! isset($items['id'], $items['qty'], $items['price'], $items['name']))
- {
- log_message('error', 'The cart array must contain a product ID, quantity, price, and name.');
- return FALSE;
- }
-
- // --------------------------------------------------------------------
-
- // Prep the quantity. It can only be a number. Duh... also trim any leading zeros
- $items['qty'] = (float) $items['qty'];
-
- // If the quantity is zero or blank there's nothing for us to do
- if ($items['qty'] == 0)
- {
- return FALSE;
- }
-
- // --------------------------------------------------------------------
-
- // Validate the product ID. It can only be alpha-numeric, dashes, underscores or periods
- // Not totally sure we should impose this rule, but it seems prudent to standardize IDs.
- // Note: These can be user-specified by setting the $this->product_id_rules variable.
- if ( ! preg_match('/^['.$this->product_id_rules.']+$/i', $items['id']))
- {
- log_message('error', 'Invalid product ID. The product ID can only contain alpha-numeric characters, dashes, and underscores');
- return FALSE;
- }
-
- // --------------------------------------------------------------------
-
- // Validate the product name. It can only be alpha-numeric, dashes, underscores, colons or periods.
- // Note: These can be user-specified by setting the $this->product_name_rules variable.
- if ($this->product_name_safe && ! preg_match('/^['.$this->product_name_rules.']+$/i'.(UTF8_ENABLED ? 'u' : ''), $items['name']))
- {
- log_message('error', 'An invalid name was submitted as the product name: '.$items['name'].' The name can only contain alpha-numeric characters, dashes, underscores, colons, and spaces');
- return FALSE;
- }
-
- // --------------------------------------------------------------------
-
- // Prep the price. Remove leading zeros and anything that isn't a number or decimal point.
- $items['price'] = (float) $items['price'];
-
- // We now need to create a unique identifier for the item being inserted into the cart.
- // Every time something is added to the cart it is stored in the master cart array.
- // Each row in the cart array, however, must have a unique index that identifies not only
- // a particular product, but makes it possible to store identical products with different options.
- // For example, what if someone buys two identical t-shirts (same product ID), but in
- // different sizes? The product ID (and other attributes, like the name) will be identical for
- // both sizes because it's the same shirt. The only difference will be the size.
- // Internally, we need to treat identical submissions, but with different options, as a unique product.
- // Our solution is to convert the options array to a string and MD5 it along with the product ID.
- // This becomes the unique "row ID"
- if (isset($items['options']) && count($items['options']) > 0)
- {
- $rowid = md5($items['id'].serialize($items['options']));
- }
- else
- {
- // No options were submitted so we simply MD5 the product ID.
- // Technically, we don't need to MD5 the ID in this case, but it makes
- // sense to standardize the format of array indexes for both conditions
- $rowid = md5($items['id']);
- }
-
- // --------------------------------------------------------------------
-
- // Now that we have our unique "row ID", we'll add our cart items to the master array
- // grab quantity if it's already there and add it on
- $old_quantity = isset($this->_cart_contents[$rowid]['qty']) ? (int) $this->_cart_contents[$rowid]['qty'] : 0;
-
- // Re-create the entry, just to make sure our index contains only the data from this submission
- $items['rowid'] = $rowid;
- $items['qty'] += $old_quantity;
- $this->_cart_contents[$rowid] = $items;
-
- return $rowid;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Update the cart
- *
- * This function permits the quantity of a given item to be changed.
- * Typically it is called from the "view cart" page if a user makes
- * changes to the quantity before checkout. That array must contain the
- * product ID and quantity for each item.
- *
- * @param array
- * @return bool
- */
- public function update($items = array())
- {
- // Was any cart data passed?
- if ( ! is_array($items) OR count($items) === 0)
- {
- return FALSE;
- }
-
- // You can either update a single product using a one-dimensional array,
- // or multiple products using a multi-dimensional one. The way we
- // determine the array type is by looking for a required array key named "rowid".
- // If it's not found we assume it's a multi-dimensional array
- $save_cart = FALSE;
- if (isset($items['rowid']))
- {
- if ($this->_update($items) === TRUE)
- {
- $save_cart = TRUE;
- }
- }
- else
- {
- foreach ($items as $val)
- {
- if (is_array($val) && isset($val['rowid']))
- {
- if ($this->_update($val) === TRUE)
- {
- $save_cart = TRUE;
- }
- }
- }
- }
-
- // Save the cart data if the insert was successful
- if ($save_cart === TRUE)
- {
- $this->_save_cart();
- return TRUE;
- }
-
- return FALSE;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Update the cart
- *
- * This function permits changing item properties.
- * Typically it is called from the "view cart" page if a user makes
- * changes to the quantity before checkout. That array must contain the
- * rowid and quantity for each item.
- *
- * @param array
- * @return bool
- */
- protected function _update($items = array())
- {
- // Without these array indexes there is nothing we can do
- if ( ! isset($items['rowid'], $this->_cart_contents[$items['rowid']]))
- {
- return FALSE;
- }
-
- // Prep the quantity
- if (isset($items['qty']))
- {
- $items['qty'] = (float) $items['qty'];
- // Is the quantity zero? If so we will remove the item from the cart.
- // If the quantity is greater than zero we are updating
- if ($items['qty'] == 0)
- {
- unset($this->_cart_contents[$items['rowid']]);
- return TRUE;
- }
- }
-
- // find updatable keys
- $keys = array_intersect(array_keys($this->_cart_contents[$items['rowid']]), array_keys($items));
- // if a price was passed, make sure it contains valid data
- if (isset($items['price']))
- {
- $items['price'] = (float) $items['price'];
- }
-
- // product id & name shouldn't be changed
- foreach (array_diff($keys, array('id', 'name')) as $key)
- {
- $this->_cart_contents[$items['rowid']][$key] = $items[$key];
- }
-
- return TRUE;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Save the cart array to the session DB
- *
- * @return bool
- */
- protected function _save_cart()
- {
- // Let's add up the individual prices and set the cart sub-total
- $this->_cart_contents['total_items'] = $this->_cart_contents['cart_total'] = 0;
- foreach ($this->_cart_contents as $key => $val)
- {
- // We make sure the array contains the proper indexes
- if ( ! is_array($val) OR ! isset($val['price'], $val['qty']))
- {
- continue;
- }
-
- $this->_cart_contents['cart_total'] += ($val['price'] * $val['qty']);
- $this->_cart_contents['total_items'] += $val['qty'];
- $this->_cart_contents[$key]['subtotal'] = ($this->_cart_contents[$key]['price'] * $this->_cart_contents[$key]['qty']);
- }
-
- // Is our cart empty? If so we delete it from the session
- if (count($this->_cart_contents) <= 2)
- {
- $this->CI->session->unset_userdata('cart_contents');
-
- // Nothing more to do... coffee time!
- return FALSE;
- }
-
- // If we made it this far it means that our cart has data.
- // Let's pass it to the Session class so it can be stored
- $this->CI->session->set_userdata(array('cart_contents' => $this->_cart_contents));
-
- // Woot!
- return TRUE;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Cart Total
- *
- * @return int
- */
- public function total()
- {
- return $this->_cart_contents['cart_total'];
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Remove Item
- *
- * Removes an item from the cart
- *
- * @param int
- * @return bool
- */
- public function remove($rowid)
- {
- // unset & save
- unset($this->_cart_contents[$rowid]);
- $this->_save_cart();
- return TRUE;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Total Items
- *
- * Returns the total item count
- *
- * @return int
- */
- public function total_items()
- {
- return $this->_cart_contents['total_items'];
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Cart Contents
- *
- * Returns the entire cart array
- *
- * @param bool
- * @return array
- */
- public function contents($newest_first = FALSE)
- {
- // do we want the newest first?
- $cart = ($newest_first) ? array_reverse($this->_cart_contents) : $this->_cart_contents;
-
- // Remove these so they don't create a problem when showing the cart table
- unset($cart['total_items']);
- unset($cart['cart_total']);
-
- return $cart;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Get cart item
- *
- * Returns the details of a specific item in the cart
- *
- * @param string $row_id
- * @return array
- */
- public function get_item($row_id)
- {
- return (in_array($row_id, array('total_items', 'cart_total'), TRUE) OR ! isset($this->_cart_contents[$row_id]))
- ? FALSE
- : $this->_cart_contents[$row_id];
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Has options
- *
- * Returns TRUE if the rowid passed to this function correlates to an item
- * that has options associated with it.
- *
- * @param string $row_id = ''
- * @return bool
- */
- public function has_options($row_id = '')
- {
- return (isset($this->_cart_contents[$row_id]['options']) && count($this->_cart_contents[$row_id]['options']) !== 0);
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Product options
- *
- * Returns the an array of options, for a particular product row ID
- *
- * @param string $row_id = ''
- * @return array
- */
- public function product_options($row_id = '')
- {
- return isset($this->_cart_contents[$row_id]['options']) ? $this->_cart_contents[$row_id]['options'] : array();
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Format Number
- *
- * Returns the supplied number with commas and a decimal point.
- *
- * @param float
- * @return string
- */
- public function format_number($n = '')
- {
- return ($n === '') ? '' : number_format( (float) $n, 2, '.', ',');
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Destroy the cart
- *
- * Empties the cart and kills the session
- *
- * @return void
- */
- public function destroy()
- {
- $this->_cart_contents = array('cart_total' => 0, 'total_items' => 0);
- $this->CI->session->unset_userdata('cart_contents');
- }
-
-}