如果在PHP中选择了购物车中的项目，则更新该项目
我正在建立一个网上订购食品的网站。因此，基本上，每件商品都有两种尺寸的如果在PHP中选择了购物车中的项目，则更新该项目,php,Php,我正在建立一个网上订购食品的网站。因此，基本上，每件商品都有两种尺寸的PT和QT，价格不同。我能够添加到购物车，如果这两个价格选择之一。但有一个问题，例如，如果我选择了PTsize并已添加到购物车，但如果我想稍后更改为QTsize，它就不能这样做。我不知道臭虫在哪里。请看一下我的代码，帮助我解决这个问题。多谢各位 DB（表名为items）： index.php $results = $mysqli->query("SELECT * FROM items WHERE produc
PTQTPTQT $results = $mysqli->query("SELECT * FROM items WHERE product_type='house_specials' ORDER BY id ASC");
if ($results) {
while($obj = $results->fetch_object()) {
echo '<div class="product">';
echo '<form method="post" action="cart_update.php">';
echo '<div class="product-content"><h3>'.$obj->product_name.'</h3>';
echo '<div class="product-desc">'.$obj->product_desc.'</div>';
echo '<div class="product-info">';
echo 'PT '.$currency.$obj->price.'<input id="pt" type="radio" name="productSize" value="'.$obj->price.'" checked="checked" />';
echo 'QT '.$currency.$obj->priceBig.'<input id="qt" class="size_butt" type="radio" name="productSize" value="'.$obj->priceBig.'"/>';
// echo 'Price '.$currency.$obj->price.' | ';
echo 'Qty <input class="qtyBox" type="number" min="0" name="product_qty" value="1" size="3" min="0" />';
echo '<button class="add_to_cart">Add To Cart</button>';
echo '</div></div>';
echo '<input type="hidden" name="product_code" value="'.$obj->product_code.'" />';
echo '<input type="hidden" name="type" value="add" />';
echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';
echo '</form>';
echo '</div>';
}
}
<h2>Your Cart</h2>
<?php
if(isset($_SESSION["items"]))
{
$total = 0;
echo '<ol>';
if (isset($_SESSION["items"])) {
foreach ($_SESSION["items"] as $cart_itm)
{
echo '<li class="cart-itm">';
echo '<span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">×</a></span>';
echo '<h3>'.$cart_itm["name"].'</h3>';
echo '<div class="p-code">P code : '.$cart_itm["code"].'</div>';
echo '<div class="p-qty">Qty : '.$cart_itm["qty"].'</div>';
echo '<div class="p-price">Price :'.$currency.$cart_itm["price"].'</div>';
echo '</li>';
$subtotal = ($cart_itm["price"]*$cart_itm["qty"]);
$total = ($total + $subtotal);
}
echo '</ol>';
echo '<span class="check-out-txt"><strong>Total : '.$currency.$total.'</strong> <a href="view_cart.php"><button>Check-out!</button></a></span>';
echo '<span class="empty-cart"><a href="cart_update.php?emptycart=1&return_url='.$current_url.'"><button>Empty Cart</button></a></span>';
}
} else {
echo 'Your cart is empty';
}
// This class is meant to be help keep your cart consistent and contained
// It has all the very basics
class ShoppingCart
{
private $currency;
public function __construct($currency = '$')
{
$this->setCurrency($currency);
}
public function setCurrency($currency)
{
$this->currency = $currency;
}
public function addToCart($item)
{
if(!isset($_SESSION['cart']))
$_SESSION['cart'] = array();
$item_code = filter_var($item['product_code'], FILTER_SANITIZE_STRING);
$qty = (!is_numeric($item["product_qty"]))? 1 : $item["product_qty"];
$price['qt'] = $item["priceBig"];
$price['pt'] = $item["price"];
$size = (!empty($item['productSize']))? $item['productSize'] : 'pt';
if(isset($_SESSION['cart'][$item_code]))
$_SESSION['cart'][$item_code][$size]['qty'] += $qty;
else {
$_SESSION['cart'][$item_code]['price'] = $price;
$_SESSION['cart'][$item_code][$size]['qty'] = $qty;
}
}
public function changeItemSize($item_code,$from = 'pt',$to = 'qt',$qty = false)
{
if(isset($_SESSION['cart'][$item_code][$from])) {
if(isset($_SESSION['cart'][$item_code][$to])){
$useQty = (!$qty)? $_SESSION['cart'][$item_code][$from]['qty'] : $qty;
$_SESSION['cart'][$item_code][$to]['qty'] += $useQty;
$remainder = $_SESSION['cart'][$item_code][$from]['qty'] - $useQty;
if($remainder <= 0)
unset($_SESSION['cart'][$item_code][$from]);
else
$_SESSION['cart'][$item_code][$from]['qty'] = $remainder;
}
else {
$_SESSION['cart'][$item_code][$to] = $_SESSION['cart'][$item_code][$from];
unset($_SESSION['cart'][$item_code][$from]);
}
}
}
public function removeFromCart($item_code)
{
if(isset($_SESSION['cart'][$item_code]))
unset($_SESSION['cart'][$item_code]);
}
public function getCurrency()
{
return $this->currency;
}
}
// This is just meant to pull some data from your db related
// to your products. You may see some value in expanding this out
class Products
{
private $con;
public function __construct($mysqli)
{
// You need to include the query function
require_once(FUNCTION_DIR.'/function.query.php');
$this->con = $mysqli;
}
public function getProductDetails($itemCodes = false)
{
if(empty($itemCodes))
return query("SELECT * FROM items ORDER BY id ASC",$this->con);
else {
foreach($itemCodes as $codes) {
$val = preg_replace('/[^a-zA-Z0-9]/','',$codes);
$val = trim($val);
if(empty($val))
continue;
$sql[] = "`product_code` = '{$val}'";
}
return query("SELECT * FROM `items` WHERE ".implode(" OR ",$sql)." ORDER BY `id` ASC",$this->con);
}
}
public function getHouseSpecials()
{
return query("SELECT * FROM items WHERE product_type = 'house_specials' ORDER BY id ASC",$this->con);
}
}
// This is just a fast and dirty way to run a query and return an array
// It's meant to return, so it's really only good for select statements
function query($sql,$mysqli)
{
$results = $mysqli->query($sql);
if(!$results)
return 0;
while($obj = $results->fetch_object()) {
$row[] = $obj;
}
return (!empty($row))? $row : array();
}
// If you don't have some sort of config file with some simple defines and such
// I would encourage it so it's easier to keep track of files and allow
// for the re-use of common elements
//*** Include your database file ***//
// Create some defines (if you don't already have some)
define('ROOT_DIR',__DIR__);
define('CLASS_DIR',ROOT_DIR.'/core/classes');
define('FUNCTION_DIR',ROOT_DIR.'/core/functions');
// Autoload classes
spl_autoload_register(function($class){
if(class_exists($class))
return;
if(is_file($file = CLASS_DIR.'/class.'.$class.'.php'))
include_once($file);
});
// Include config
require_once(__DIR__.'/config.php');
// Include the required functions to render
require_once(FUNCTION_DIR.'/function.cartView.php');
require_once(FUNCTION_DIR.'/function.renderCart.php');
// Create instance of products
$pEngine = new Products($mysqli);
// Create shopping cart
$shopEngine = new ShoppingCart('$');
// Do the cart actions if prompted
if(!empty($_REQUEST['add']))
$shopEngine->addToCart($_REQUEST);
elseif(!empty($_REQUEST['change'])) {
$to = $_REQUEST['productSize'];
$from = ($to == 'pt')? 'qt' : 'pt';
$shopEngine->changeItemSize($_REQUEST['product_code'],$from,$to);
}
elseif(!empty($_REQUEST['remove']))
$shopEngine->removeFromCart($_REQUEST['product_code']);
// Quick render of the cart
// This is retrieved from your products list
// This is just an example
$prods = $pEngine->getHouseSpecials();
foreach($prods as $items) {
echo cartView((object)$items);
}
// Quick demonstration of the session
if(!empty($_SESSION['cart'])) {
$details = $pEngine->getProductDetails(array_keys($_SESSION['cart']));
// you would just render the cart here
// This function does not work, I didn't have time
// to finish it...use print_r($details) to see what it returns
// echo renderCart($mysqli,$details,'$');
foreach($itemsInCart as $item_codes) {
if(isset($_SESSION['cart'][$item_codes]['qt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=pt">Item Change to Small</a></br />';
if(isset($_SESSION['cart'][$item_codes]['pt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=qt">Item Change to Large</a></br />';
echo '<a href="?remove=true&product_code='.$item_codes.'">Remove</a></br />';
}
}
$results=$mysqli->query（“从商品中选择*，商品类型为'house'specials'按id ASC订购”）；
如果（结果）{
而（$obj=$results->fetch_object（））{
回声'；
回声'；
回显'.$obj->产品名称''；
回显“.$obj->product_desc.”；
回声'；
回显'PT'。$currency.$obj->price'；
回显'QT'。$currency.$obj->priceBig'；
//回显“价格”。$currency.$obj->Price.。|；
回显“数量”；
echo“添加到购物车”；
回声'；
回声'；
回声'；
回声'；
回声'；
回声'；
}
}
你的车
我个人主张创建每个函数（或类/方法）都有自己的工作。在这种情况下，我认为您应该这样做，并更改会话数组，如下所示：
function addToCart($item)
{
if(!isset($_SESSION['cart']))
$_SESSION['cart'] = array();
$item_code = filter_var($item['product_code'], FILTER_SANITIZE_STRING);
$qty = (!is_numeric($item["product_qty"]))? 1 : $item["product_qty"];
$price['l'] = $item["priceBig"];
$price['s'] = $item["price"];
$size = (!empty($item['productSize']))? $item['productSize'] : 's';
if(isset($_SESSION['cart'][$item_code]))
$_SESSION['cart'][$item_code][$size]['qty'] += $qty;
else {
$_SESSION['cart'][$item_code]['price'] = $price;
$_SESSION['cart'][$item_code][$size]['qty'] = $qty;
}
}
function changeItemSize($item_code,$from = 's',$to = 'l',$qty = false)
{
if(isset($_SESSION['cart'][$item_code][$from])) {
if(isset($_SESSION['cart'][$item_code][$to])){
$useQty = (!$qty)? $_SESSION['cart'][$item_code][$from]['qty'] : $qty;
$_SESSION['cart'][$item_code][$to]['qty'] += $useQty;
$remainder = $_SESSION['cart'][$item_code][$from]['qty'] - $useQty;
if($remainder <= 0)
unset($_SESSION['cart'][$item_code][$from]);
else
$_SESSION['cart'][$item_code][$from]['qty'] = $remainder;
}
else {
$_SESSION['cart'][$item_code][$to] = $_SESSION['cart'][$item_code][$from];
unset($_SESSION['cart'][$item_code][$from]);
}
}
}
if(!empty($_REQUEST['add'])) {
addToCart($_REQUEST);
}
elseif(!empty($_REQUEST['change'])) {
$to = $_REQUEST['productSize'];
$from = ($to == 's')? 'l' : 's';
changeItemSize($_REQUEST['product_code'],$from,$to);
}
更改功能将从大项目扣除到小项目，反之亦然。你可以随便玩玩，但我建议你这么做
编辑：以下是我试图通过上述示例了解的内容。这并不完美，但希望你能理解。我建议在一个完全不同的空间/页面上这样做，以防你弄不明白，至少你不会破坏你所拥有的
夫妻注：
1） 这个系统不需要你进入一个全新的页面来向购物车添加物品。都在一页纸上完成了
2） 注意文件夹之类的东西，这样你就可以把东西放在合适的地方
3） 最后，这仅用于演示，使用风险自负。这并不是为了复制和粘贴，而是为了看看是否有什么东西可以帮助您解决总体问题：
/core/classes/class.ShoppingCart.php
$results = $mysqli->query("SELECT * FROM items WHERE product_type='house_specials' ORDER BY id ASC");
if ($results) {
while($obj = $results->fetch_object()) {
echo '<div class="product">';
echo '<form method="post" action="cart_update.php">';
echo '<div class="product-content"><h3>'.$obj->product_name.'</h3>';
echo '<div class="product-desc">'.$obj->product_desc.'</div>';
echo '<div class="product-info">';
echo 'PT '.$currency.$obj->price.'<input id="pt" type="radio" name="productSize" value="'.$obj->price.'" checked="checked" />';
echo 'QT '.$currency.$obj->priceBig.'<input id="qt" class="size_butt" type="radio" name="productSize" value="'.$obj->priceBig.'"/>';
// echo 'Price '.$currency.$obj->price.' | ';
echo 'Qty <input class="qtyBox" type="number" min="0" name="product_qty" value="1" size="3" min="0" />';
echo '<button class="add_to_cart">Add To Cart</button>';
echo '</div></div>';
echo '<input type="hidden" name="product_code" value="'.$obj->product_code.'" />';
echo '<input type="hidden" name="type" value="add" />';
echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';
echo '</form>';
echo '</div>';
}
}
<h2>Your Cart</h2>
<?php
if(isset($_SESSION["items"]))
{
$total = 0;
echo '<ol>';
if (isset($_SESSION["items"])) {
foreach ($_SESSION["items"] as $cart_itm)
{
echo '<li class="cart-itm">';
echo '<span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">×</a></span>';
echo '<h3>'.$cart_itm["name"].'</h3>';
echo '<div class="p-code">P code : '.$cart_itm["code"].'</div>';
echo '<div class="p-qty">Qty : '.$cart_itm["qty"].'</div>';
echo '<div class="p-price">Price :'.$currency.$cart_itm["price"].'</div>';
echo '</li>';
$subtotal = ($cart_itm["price"]*$cart_itm["qty"]);
$total = ($total + $subtotal);
}
echo '</ol>';
echo '<span class="check-out-txt"><strong>Total : '.$currency.$total.'</strong> <a href="view_cart.php"><button>Check-out!</button></a></span>';
echo '<span class="empty-cart"><a href="cart_update.php?emptycart=1&return_url='.$current_url.'"><button>Empty Cart</button></a></span>';
}
} else {
echo 'Your cart is empty';
}
// This class is meant to be help keep your cart consistent and contained
// It has all the very basics
class ShoppingCart
{
private $currency;
public function __construct($currency = '$')
{
$this->setCurrency($currency);
}
public function setCurrency($currency)
{
$this->currency = $currency;
}
public function addToCart($item)
{
if(!isset($_SESSION['cart']))
$_SESSION['cart'] = array();
$item_code = filter_var($item['product_code'], FILTER_SANITIZE_STRING);
$qty = (!is_numeric($item["product_qty"]))? 1 : $item["product_qty"];
$price['qt'] = $item["priceBig"];
$price['pt'] = $item["price"];
$size = (!empty($item['productSize']))? $item['productSize'] : 'pt';
if(isset($_SESSION['cart'][$item_code]))
$_SESSION['cart'][$item_code][$size]['qty'] += $qty;
else {
$_SESSION['cart'][$item_code]['price'] = $price;
$_SESSION['cart'][$item_code][$size]['qty'] = $qty;
}
}
public function changeItemSize($item_code,$from = 'pt',$to = 'qt',$qty = false)
{
if(isset($_SESSION['cart'][$item_code][$from])) {
if(isset($_SESSION['cart'][$item_code][$to])){
$useQty = (!$qty)? $_SESSION['cart'][$item_code][$from]['qty'] : $qty;
$_SESSION['cart'][$item_code][$to]['qty'] += $useQty;
$remainder = $_SESSION['cart'][$item_code][$from]['qty'] - $useQty;
if($remainder <= 0)
unset($_SESSION['cart'][$item_code][$from]);
else
$_SESSION['cart'][$item_code][$from]['qty'] = $remainder;
}
else {
$_SESSION['cart'][$item_code][$to] = $_SESSION['cart'][$item_code][$from];
unset($_SESSION['cart'][$item_code][$from]);
}
}
}
public function removeFromCart($item_code)
{
if(isset($_SESSION['cart'][$item_code]))
unset($_SESSION['cart'][$item_code]);
}
public function getCurrency()
{
return $this->currency;
}
}
// This is just meant to pull some data from your db related
// to your products. You may see some value in expanding this out
class Products
{
private $con;
public function __construct($mysqli)
{
// You need to include the query function
require_once(FUNCTION_DIR.'/function.query.php');
$this->con = $mysqli;
}
public function getProductDetails($itemCodes = false)
{
if(empty($itemCodes))
return query("SELECT * FROM items ORDER BY id ASC",$this->con);
else {
foreach($itemCodes as $codes) {
$val = preg_replace('/[^a-zA-Z0-9]/','',$codes);
$val = trim($val);
if(empty($val))
continue;
$sql[] = "`product_code` = '{$val}'";
}
return query("SELECT * FROM `items` WHERE ".implode(" OR ",$sql)." ORDER BY `id` ASC",$this->con);
}
}
public function getHouseSpecials()
{
return query("SELECT * FROM items WHERE product_type = 'house_specials' ORDER BY id ASC",$this->con);
}
}
// This is just a fast and dirty way to run a query and return an array
// It's meant to return, so it's really only good for select statements
function query($sql,$mysqli)
{
$results = $mysqli->query($sql);
if(!$results)
return 0;
while($obj = $results->fetch_object()) {
$row[] = $obj;
}
return (!empty($row))? $row : array();
}
// If you don't have some sort of config file with some simple defines and such
// I would encourage it so it's easier to keep track of files and allow
// for the re-use of common elements
//*** Include your database file ***//
// Create some defines (if you don't already have some)
define('ROOT_DIR',__DIR__);
define('CLASS_DIR',ROOT_DIR.'/core/classes');
define('FUNCTION_DIR',ROOT_DIR.'/core/functions');
// Autoload classes
spl_autoload_register(function($class){
if(class_exists($class))
return;
if(is_file($file = CLASS_DIR.'/class.'.$class.'.php'))
include_once($file);
});
// Include config
require_once(__DIR__.'/config.php');
// Include the required functions to render
require_once(FUNCTION_DIR.'/function.cartView.php');
require_once(FUNCTION_DIR.'/function.renderCart.php');
// Create instance of products
$pEngine = new Products($mysqli);
// Create shopping cart
$shopEngine = new ShoppingCart('$');
// Do the cart actions if prompted
if(!empty($_REQUEST['add']))
$shopEngine->addToCart($_REQUEST);
elseif(!empty($_REQUEST['change'])) {
$to = $_REQUEST['productSize'];
$from = ($to == 'pt')? 'qt' : 'pt';
$shopEngine->changeItemSize($_REQUEST['product_code'],$from,$to);
}
elseif(!empty($_REQUEST['remove']))
$shopEngine->removeFromCart($_REQUEST['product_code']);
// Quick render of the cart
// This is retrieved from your products list
// This is just an example
$prods = $pEngine->getHouseSpecials();
foreach($prods as $items) {
echo cartView((object)$items);
}
// Quick demonstration of the session
if(!empty($_SESSION['cart'])) {
$details = $pEngine->getProductDetails(array_keys($_SESSION['cart']));
// you would just render the cart here
// This function does not work, I didn't have time
// to finish it...use print_r($details) to see what it returns
// echo renderCart($mysqli,$details,'$');
foreach($itemsInCart as $item_codes) {
if(isset($_SESSION['cart'][$item_codes]['qt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=pt">Item Change to Small</a></br />';
if(isset($_SESSION['cart'][$item_codes]['pt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=qt">Item Change to Large</a></br />';
echo '<a href="?remove=true&product_code='.$item_codes.'">Remove</a></br />';
}
}
/core/functions/function.cartView.php
$results = $mysqli->query("SELECT * FROM items WHERE product_type='house_specials' ORDER BY id ASC");
if ($results) {
while($obj = $results->fetch_object()) {
echo '<div class="product">';
echo '<form method="post" action="cart_update.php">';
echo '<div class="product-content"><h3>'.$obj->product_name.'</h3>';
echo '<div class="product-desc">'.$obj->product_desc.'</div>';
echo '<div class="product-info">';
echo 'PT '.$currency.$obj->price.'<input id="pt" type="radio" name="productSize" value="'.$obj->price.'" checked="checked" />';
echo 'QT '.$currency.$obj->priceBig.'<input id="qt" class="size_butt" type="radio" name="productSize" value="'.$obj->priceBig.'"/>';
// echo 'Price '.$currency.$obj->price.' | ';
echo 'Qty <input class="qtyBox" type="number" min="0" name="product_qty" value="1" size="3" min="0" />';
echo '<button class="add_to_cart">Add To Cart</button>';
echo '</div></div>';
echo '<input type="hidden" name="product_code" value="'.$obj->product_code.'" />';
echo '<input type="hidden" name="type" value="add" />';
echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';
echo '</form>';
echo '</div>';
}
}
<h2>Your Cart</h2>
<?php
if(isset($_SESSION["items"]))
{
$total = 0;
echo '<ol>';
if (isset($_SESSION["items"])) {
foreach ($_SESSION["items"] as $cart_itm)
{
echo '<li class="cart-itm">';
echo '<span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">×</a></span>';
echo '<h3>'.$cart_itm["name"].'</h3>';
echo '<div class="p-code">P code : '.$cart_itm["code"].'</div>';
echo '<div class="p-qty">Qty : '.$cart_itm["qty"].'</div>';
echo '<div class="p-price">Price :'.$currency.$cart_itm["price"].'</div>';
echo '</li>';
$subtotal = ($cart_itm["price"]*$cart_itm["qty"]);
$total = ($total + $subtotal);
}
echo '</ol>';
echo '<span class="check-out-txt"><strong>Total : '.$currency.$total.'</strong> <a href="view_cart.php"><button>Check-out!</button></a></span>';
echo '<span class="empty-cart"><a href="cart_update.php?emptycart=1&return_url='.$current_url.'"><button>Empty Cart</button></a></span>';
}
} else {
echo 'Your cart is empty';
}
// This class is meant to be help keep your cart consistent and contained
// It has all the very basics
class ShoppingCart
{
private $currency;
public function __construct($currency = '$')
{
$this->setCurrency($currency);
}
public function setCurrency($currency)
{
$this->currency = $currency;
}
public function addToCart($item)
{
if(!isset($_SESSION['cart']))
$_SESSION['cart'] = array();
$item_code = filter_var($item['product_code'], FILTER_SANITIZE_STRING);
$qty = (!is_numeric($item["product_qty"]))? 1 : $item["product_qty"];
$price['qt'] = $item["priceBig"];
$price['pt'] = $item["price"];
$size = (!empty($item['productSize']))? $item['productSize'] : 'pt';
if(isset($_SESSION['cart'][$item_code]))
$_SESSION['cart'][$item_code][$size]['qty'] += $qty;
else {
$_SESSION['cart'][$item_code]['price'] = $price;
$_SESSION['cart'][$item_code][$size]['qty'] = $qty;
}
}
public function changeItemSize($item_code,$from = 'pt',$to = 'qt',$qty = false)
{
if(isset($_SESSION['cart'][$item_code][$from])) {
if(isset($_SESSION['cart'][$item_code][$to])){
$useQty = (!$qty)? $_SESSION['cart'][$item_code][$from]['qty'] : $qty;
$_SESSION['cart'][$item_code][$to]['qty'] += $useQty;
$remainder = $_SESSION['cart'][$item_code][$from]['qty'] - $useQty;
if($remainder <= 0)
unset($_SESSION['cart'][$item_code][$from]);
else
$_SESSION['cart'][$item_code][$from]['qty'] = $remainder;
}
else {
$_SESSION['cart'][$item_code][$to] = $_SESSION['cart'][$item_code][$from];
unset($_SESSION['cart'][$item_code][$from]);
}
}
}
public function removeFromCart($item_code)
{
if(isset($_SESSION['cart'][$item_code]))
unset($_SESSION['cart'][$item_code]);
}
public function getCurrency()
{
return $this->currency;
}
}
// This is just meant to pull some data from your db related
// to your products. You may see some value in expanding this out
class Products
{
private $con;
public function __construct($mysqli)
{
// You need to include the query function
require_once(FUNCTION_DIR.'/function.query.php');
$this->con = $mysqli;
}
public function getProductDetails($itemCodes = false)
{
if(empty($itemCodes))
return query("SELECT * FROM items ORDER BY id ASC",$this->con);
else {
foreach($itemCodes as $codes) {
$val = preg_replace('/[^a-zA-Z0-9]/','',$codes);
$val = trim($val);
if(empty($val))
continue;
$sql[] = "`product_code` = '{$val}'";
}
return query("SELECT * FROM `items` WHERE ".implode(" OR ",$sql)." ORDER BY `id` ASC",$this->con);
}
}
public function getHouseSpecials()
{
return query("SELECT * FROM items WHERE product_type = 'house_specials' ORDER BY id ASC",$this->con);
}
}
// This is just a fast and dirty way to run a query and return an array
// It's meant to return, so it's really only good for select statements
function query($sql,$mysqli)
{
$results = $mysqli->query($sql);
if(!$results)
return 0;
while($obj = $results->fetch_object()) {
$row[] = $obj;
}
return (!empty($row))? $row : array();
}
// If you don't have some sort of config file with some simple defines and such
// I would encourage it so it's easier to keep track of files and allow
// for the re-use of common elements
//*** Include your database file ***//
// Create some defines (if you don't already have some)
define('ROOT_DIR',__DIR__);
define('CLASS_DIR',ROOT_DIR.'/core/classes');
define('FUNCTION_DIR',ROOT_DIR.'/core/functions');
// Autoload classes
spl_autoload_register(function($class){
if(class_exists($class))
return;
if(is_file($file = CLASS_DIR.'/class.'.$class.'.php'))
include_once($file);
});
// Include config
require_once(__DIR__.'/config.php');
// Include the required functions to render
require_once(FUNCTION_DIR.'/function.cartView.php');
require_once(FUNCTION_DIR.'/function.renderCart.php');
// Create instance of products
$pEngine = new Products($mysqli);
// Create shopping cart
$shopEngine = new ShoppingCart('$');
// Do the cart actions if prompted
if(!empty($_REQUEST['add']))
$shopEngine->addToCart($_REQUEST);
elseif(!empty($_REQUEST['change'])) {
$to = $_REQUEST['productSize'];
$from = ($to == 'pt')? 'qt' : 'pt';
$shopEngine->changeItemSize($_REQUEST['product_code'],$from,$to);
}
elseif(!empty($_REQUEST['remove']))
$shopEngine->removeFromCart($_REQUEST['product_code']);
// Quick render of the cart
// This is retrieved from your products list
// This is just an example
$prods = $pEngine->getHouseSpecials();
foreach($prods as $items) {
echo cartView((object)$items);
}
// Quick demonstration of the session
if(!empty($_SESSION['cart'])) {
$details = $pEngine->getProductDetails(array_keys($_SESSION['cart']));
// you would just render the cart here
// This function does not work, I didn't have time
// to finish it...use print_r($details) to see what it returns
// echo renderCart($mysqli,$details,'$');
foreach($itemsInCart as $item_codes) {
if(isset($_SESSION['cart'][$item_codes]['qt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=pt">Item Change to Small</a></br />';
if(isset($_SESSION['cart'][$item_codes]['pt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=qt">Item Change to Large</a></br />';
echo '<a href="?remove=true&product_code='.$item_codes.'">Remove</a></br />';
}
}
我建议将其作为包含的html页面，而不是直接写入此函数
/core/functions/function.query.php
$results = $mysqli->query("SELECT * FROM items WHERE product_type='house_specials' ORDER BY id ASC");
if ($results) {
while($obj = $results->fetch_object()) {
echo '<div class="product">';
echo '<form method="post" action="cart_update.php">';
echo '<div class="product-content"><h3>'.$obj->product_name.'</h3>';
echo '<div class="product-desc">'.$obj->product_desc.'</div>';
echo '<div class="product-info">';
echo 'PT '.$currency.$obj->price.'<input id="pt" type="radio" name="productSize" value="'.$obj->price.'" checked="checked" />';
echo 'QT '.$currency.$obj->priceBig.'<input id="qt" class="size_butt" type="radio" name="productSize" value="'.$obj->priceBig.'"/>';
// echo 'Price '.$currency.$obj->price.' | ';
echo 'Qty <input class="qtyBox" type="number" min="0" name="product_qty" value="1" size="3" min="0" />';
echo '<button class="add_to_cart">Add To Cart</button>';
echo '</div></div>';
echo '<input type="hidden" name="product_code" value="'.$obj->product_code.'" />';
echo '<input type="hidden" name="type" value="add" />';
echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';
echo '</form>';
echo '</div>';
}
}
<h2>Your Cart</h2>
<?php
if(isset($_SESSION["items"]))
{
$total = 0;
echo '<ol>';
if (isset($_SESSION["items"])) {
foreach ($_SESSION["items"] as $cart_itm)
{
echo '<li class="cart-itm">';
echo '<span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">×</a></span>';
echo '<h3>'.$cart_itm["name"].'</h3>';
echo '<div class="p-code">P code : '.$cart_itm["code"].'</div>';
echo '<div class="p-qty">Qty : '.$cart_itm["qty"].'</div>';
echo '<div class="p-price">Price :'.$currency.$cart_itm["price"].'</div>';
echo '</li>';
$subtotal = ($cart_itm["price"]*$cart_itm["qty"]);
$total = ($total + $subtotal);
}
echo '</ol>';
echo '<span class="check-out-txt"><strong>Total : '.$currency.$total.'</strong> <a href="view_cart.php"><button>Check-out!</button></a></span>';
echo '<span class="empty-cart"><a href="cart_update.php?emptycart=1&return_url='.$current_url.'"><button>Empty Cart</button></a></span>';
}
} else {
echo 'Your cart is empty';
}
// This class is meant to be help keep your cart consistent and contained
// It has all the very basics
class ShoppingCart
{
private $currency;
public function __construct($currency = '$')
{
$this->setCurrency($currency);
}
public function setCurrency($currency)
{
$this->currency = $currency;
}
public function addToCart($item)
{
if(!isset($_SESSION['cart']))
$_SESSION['cart'] = array();
$item_code = filter_var($item['product_code'], FILTER_SANITIZE_STRING);
$qty = (!is_numeric($item["product_qty"]))? 1 : $item["product_qty"];
$price['qt'] = $item["priceBig"];
$price['pt'] = $item["price"];
$size = (!empty($item['productSize']))? $item['productSize'] : 'pt';
if(isset($_SESSION['cart'][$item_code]))
$_SESSION['cart'][$item_code][$size]['qty'] += $qty;
else {
$_SESSION['cart'][$item_code]['price'] = $price;
$_SESSION['cart'][$item_code][$size]['qty'] = $qty;
}
}
public function changeItemSize($item_code,$from = 'pt',$to = 'qt',$qty = false)
{
if(isset($_SESSION['cart'][$item_code][$from])) {
if(isset($_SESSION['cart'][$item_code][$to])){
$useQty = (!$qty)? $_SESSION['cart'][$item_code][$from]['qty'] : $qty;
$_SESSION['cart'][$item_code][$to]['qty'] += $useQty;
$remainder = $_SESSION['cart'][$item_code][$from]['qty'] - $useQty;
if($remainder <= 0)
unset($_SESSION['cart'][$item_code][$from]);
else
$_SESSION['cart'][$item_code][$from]['qty'] = $remainder;
}
else {
$_SESSION['cart'][$item_code][$to] = $_SESSION['cart'][$item_code][$from];
unset($_SESSION['cart'][$item_code][$from]);
}
}
}
public function removeFromCart($item_code)
{
if(isset($_SESSION['cart'][$item_code]))
unset($_SESSION['cart'][$item_code]);
}
public function getCurrency()
{
return $this->currency;
}
}
// This is just meant to pull some data from your db related
// to your products. You may see some value in expanding this out
class Products
{
private $con;
public function __construct($mysqli)
{
// You need to include the query function
require_once(FUNCTION_DIR.'/function.query.php');
$this->con = $mysqli;
}
public function getProductDetails($itemCodes = false)
{
if(empty($itemCodes))
return query("SELECT * FROM items ORDER BY id ASC",$this->con);
else {
foreach($itemCodes as $codes) {
$val = preg_replace('/[^a-zA-Z0-9]/','',$codes);
$val = trim($val);
if(empty($val))
continue;
$sql[] = "`product_code` = '{$val}'";
}
return query("SELECT * FROM `items` WHERE ".implode(" OR ",$sql)." ORDER BY `id` ASC",$this->con);
}
}
public function getHouseSpecials()
{
return query("SELECT * FROM items WHERE product_type = 'house_specials' ORDER BY id ASC",$this->con);
}
}
// This is just a fast and dirty way to run a query and return an array
// It's meant to return, so it's really only good for select statements
function query($sql,$mysqli)
{
$results = $mysqli->query($sql);
if(!$results)
return 0;
while($obj = $results->fetch_object()) {
$row[] = $obj;
}
return (!empty($row))? $row : array();
}
// If you don't have some sort of config file with some simple defines and such
// I would encourage it so it's easier to keep track of files and allow
// for the re-use of common elements
//*** Include your database file ***//
// Create some defines (if you don't already have some)
define('ROOT_DIR',__DIR__);
define('CLASS_DIR',ROOT_DIR.'/core/classes');
define('FUNCTION_DIR',ROOT_DIR.'/core/functions');
// Autoload classes
spl_autoload_register(function($class){
if(class_exists($class))
return;
if(is_file($file = CLASS_DIR.'/class.'.$class.'.php'))
include_once($file);
});
// Include config
require_once(__DIR__.'/config.php');
// Include the required functions to render
require_once(FUNCTION_DIR.'/function.cartView.php');
require_once(FUNCTION_DIR.'/function.renderCart.php');
// Create instance of products
$pEngine = new Products($mysqli);
// Create shopping cart
$shopEngine = new ShoppingCart('$');
// Do the cart actions if prompted
if(!empty($_REQUEST['add']))
$shopEngine->addToCart($_REQUEST);
elseif(!empty($_REQUEST['change'])) {
$to = $_REQUEST['productSize'];
$from = ($to == 'pt')? 'qt' : 'pt';
$shopEngine->changeItemSize($_REQUEST['product_code'],$from,$to);
}
elseif(!empty($_REQUEST['remove']))
$shopEngine->removeFromCart($_REQUEST['product_code']);
// Quick render of the cart
// This is retrieved from your products list
// This is just an example
$prods = $pEngine->getHouseSpecials();
foreach($prods as $items) {
echo cartView((object)$items);
}
// Quick demonstration of the session
if(!empty($_SESSION['cart'])) {
$details = $pEngine->getProductDetails(array_keys($_SESSION['cart']));
// you would just render the cart here
// This function does not work, I didn't have time
// to finish it...use print_r($details) to see what it returns
// echo renderCart($mysqli,$details,'$');
foreach($itemsInCart as $item_codes) {
if(isset($_SESSION['cart'][$item_codes]['qt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=pt">Item Change to Small</a></br />';
if(isset($_SESSION['cart'][$item_codes]['pt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=qt">Item Change to Large</a></br />';
echo '<a href="?remove=true&product_code='.$item_codes.'">Remove</a></br />';
}
}
/config.php
$results = $mysqli->query("SELECT * FROM items WHERE product_type='house_specials' ORDER BY id ASC");
if ($results) {
while($obj = $results->fetch_object()) {
echo '<div class="product">';
echo '<form method="post" action="cart_update.php">';
echo '<div class="product-content"><h3>'.$obj->product_name.'</h3>';
echo '<div class="product-desc">'.$obj->product_desc.'</div>';
echo '<div class="product-info">';
echo 'PT '.$currency.$obj->price.'<input id="pt" type="radio" name="productSize" value="'.$obj->price.'" checked="checked" />';
echo 'QT '.$currency.$obj->priceBig.'<input id="qt" class="size_butt" type="radio" name="productSize" value="'.$obj->priceBig.'"/>';
// echo 'Price '.$currency.$obj->price.' | ';
echo 'Qty <input class="qtyBox" type="number" min="0" name="product_qty" value="1" size="3" min="0" />';
echo '<button class="add_to_cart">Add To Cart</button>';
echo '</div></div>';
echo '<input type="hidden" name="product_code" value="'.$obj->product_code.'" />';
echo '<input type="hidden" name="type" value="add" />';
echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';
echo '</form>';
echo '</div>';
}
}
<h2>Your Cart</h2>
<?php
if(isset($_SESSION["items"]))
{
$total = 0;
echo '<ol>';
if (isset($_SESSION["items"])) {
foreach ($_SESSION["items"] as $cart_itm)
{
echo '<li class="cart-itm">';
echo '<span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">×</a></span>';
echo '<h3>'.$cart_itm["name"].'</h3>';
echo '<div class="p-code">P code : '.$cart_itm["code"].'</div>';
echo '<div class="p-qty">Qty : '.$cart_itm["qty"].'</div>';
echo '<div class="p-price">Price :'.$currency.$cart_itm["price"].'</div>';
echo '</li>';
$subtotal = ($cart_itm["price"]*$cart_itm["qty"]);
$total = ($total + $subtotal);
}
echo '</ol>';
echo '<span class="check-out-txt"><strong>Total : '.$currency.$total.'</strong> <a href="view_cart.php"><button>Check-out!</button></a></span>';
echo '<span class="empty-cart"><a href="cart_update.php?emptycart=1&return_url='.$current_url.'"><button>Empty Cart</button></a></span>';
}
} else {
echo 'Your cart is empty';
}
// This class is meant to be help keep your cart consistent and contained
// It has all the very basics
class ShoppingCart
{
private $currency;
public function __construct($currency = '$')
{
$this->setCurrency($currency);
}
public function setCurrency($currency)
{
$this->currency = $currency;
}
public function addToCart($item)
{
if(!isset($_SESSION['cart']))
$_SESSION['cart'] = array();
$item_code = filter_var($item['product_code'], FILTER_SANITIZE_STRING);
$qty = (!is_numeric($item["product_qty"]))? 1 : $item["product_qty"];
$price['qt'] = $item["priceBig"];
$price['pt'] = $item["price"];
$size = (!empty($item['productSize']))? $item['productSize'] : 'pt';
if(isset($_SESSION['cart'][$item_code]))
$_SESSION['cart'][$item_code][$size]['qty'] += $qty;
else {
$_SESSION['cart'][$item_code]['price'] = $price;
$_SESSION['cart'][$item_code][$size]['qty'] = $qty;
}
}
public function changeItemSize($item_code,$from = 'pt',$to = 'qt',$qty = false)
{
if(isset($_SESSION['cart'][$item_code][$from])) {
if(isset($_SESSION['cart'][$item_code][$to])){
$useQty = (!$qty)? $_SESSION['cart'][$item_code][$from]['qty'] : $qty;
$_SESSION['cart'][$item_code][$to]['qty'] += $useQty;
$remainder = $_SESSION['cart'][$item_code][$from]['qty'] - $useQty;
if($remainder <= 0)
unset($_SESSION['cart'][$item_code][$from]);
else
$_SESSION['cart'][$item_code][$from]['qty'] = $remainder;
}
else {
$_SESSION['cart'][$item_code][$to] = $_SESSION['cart'][$item_code][$from];
unset($_SESSION['cart'][$item_code][$from]);
}
}
}
public function removeFromCart($item_code)
{
if(isset($_SESSION['cart'][$item_code]))
unset($_SESSION['cart'][$item_code]);
}
public function getCurrency()
{
return $this->currency;
}
}
// This is just meant to pull some data from your db related
// to your products. You may see some value in expanding this out
class Products
{
private $con;
public function __construct($mysqli)
{
// You need to include the query function
require_once(FUNCTION_DIR.'/function.query.php');
$this->con = $mysqli;
}
public function getProductDetails($itemCodes = false)
{
if(empty($itemCodes))
return query("SELECT * FROM items ORDER BY id ASC",$this->con);
else {
foreach($itemCodes as $codes) {
$val = preg_replace('/[^a-zA-Z0-9]/','',$codes);
$val = trim($val);
if(empty($val))
continue;
$sql[] = "`product_code` = '{$val}'";
}
return query("SELECT * FROM `items` WHERE ".implode(" OR ",$sql)." ORDER BY `id` ASC",$this->con);
}
}
public function getHouseSpecials()
{
return query("SELECT * FROM items WHERE product_type = 'house_specials' ORDER BY id ASC",$this->con);
}
}
// This is just a fast and dirty way to run a query and return an array
// It's meant to return, so it's really only good for select statements
function query($sql,$mysqli)
{
$results = $mysqli->query($sql);
if(!$results)
return 0;
while($obj = $results->fetch_object()) {
$row[] = $obj;
}
return (!empty($row))? $row : array();
}
// If you don't have some sort of config file with some simple defines and such
// I would encourage it so it's easier to keep track of files and allow
// for the re-use of common elements
//*** Include your database file ***//
// Create some defines (if you don't already have some)
define('ROOT_DIR',__DIR__);
define('CLASS_DIR',ROOT_DIR.'/core/classes');
define('FUNCTION_DIR',ROOT_DIR.'/core/functions');
// Autoload classes
spl_autoload_register(function($class){
if(class_exists($class))
return;
if(is_file($file = CLASS_DIR.'/class.'.$class.'.php'))
include_once($file);
});
// Include config
require_once(__DIR__.'/config.php');
// Include the required functions to render
require_once(FUNCTION_DIR.'/function.cartView.php');
require_once(FUNCTION_DIR.'/function.renderCart.php');
// Create instance of products
$pEngine = new Products($mysqli);
// Create shopping cart
$shopEngine = new ShoppingCart('$');
// Do the cart actions if prompted
if(!empty($_REQUEST['add']))
$shopEngine->addToCart($_REQUEST);
elseif(!empty($_REQUEST['change'])) {
$to = $_REQUEST['productSize'];
$from = ($to == 'pt')? 'qt' : 'pt';
$shopEngine->changeItemSize($_REQUEST['product_code'],$from,$to);
}
elseif(!empty($_REQUEST['remove']))
$shopEngine->removeFromCart($_REQUEST['product_code']);
// Quick render of the cart
// This is retrieved from your products list
// This is just an example
$prods = $pEngine->getHouseSpecials();
foreach($prods as $items) {
echo cartView((object)$items);
}
// Quick demonstration of the session
if(!empty($_SESSION['cart'])) {
$details = $pEngine->getProductDetails(array_keys($_SESSION['cart']));
// you would just render the cart here
// This function does not work, I didn't have time
// to finish it...use print_r($details) to see what it returns
// echo renderCart($mysqli,$details,'$');
foreach($itemsInCart as $item_codes) {
if(isset($_SESSION['cart'][$item_codes]['qt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=pt">Item Change to Small</a></br />';
if(isset($_SESSION['cart'][$item_codes]['pt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=qt">Item Change to Large</a></br />';
echo '<a href="?remove=true&product_code='.$item_codes.'">Remove</a></br />';
}
}
/index.php
$results = $mysqli->query("SELECT * FROM items WHERE product_type='house_specials' ORDER BY id ASC");
if ($results) {
while($obj = $results->fetch_object()) {
echo '<div class="product">';
echo '<form method="post" action="cart_update.php">';
echo '<div class="product-content"><h3>'.$obj->product_name.'</h3>';
echo '<div class="product-desc">'.$obj->product_desc.'</div>';
echo '<div class="product-info">';
echo 'PT '.$currency.$obj->price.'<input id="pt" type="radio" name="productSize" value="'.$obj->price.'" checked="checked" />';
echo 'QT '.$currency.$obj->priceBig.'<input id="qt" class="size_butt" type="radio" name="productSize" value="'.$obj->priceBig.'"/>';
// echo 'Price '.$currency.$obj->price.' | ';
echo 'Qty <input class="qtyBox" type="number" min="0" name="product_qty" value="1" size="3" min="0" />';
echo '<button class="add_to_cart">Add To Cart</button>';
echo '</div></div>';
echo '<input type="hidden" name="product_code" value="'.$obj->product_code.'" />';
echo '<input type="hidden" name="type" value="add" />';
echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';
echo '</form>';
echo '</div>';
}
}
<h2>Your Cart</h2>
<?php
if(isset($_SESSION["items"]))
{
$total = 0;
echo '<ol>';
if (isset($_SESSION["items"])) {
foreach ($_SESSION["items"] as $cart_itm)
{
echo '<li class="cart-itm">';
echo '<span class="remove-itm"><a href="cart_update.php?removep='.$cart_itm["code"].'&return_url='.$current_url.'">×</a></span>';
echo '<h3>'.$cart_itm["name"].'</h3>';
echo '<div class="p-code">P code : '.$cart_itm["code"].'</div>';
echo '<div class="p-qty">Qty : '.$cart_itm["qty"].'</div>';
echo '<div class="p-price">Price :'.$currency.$cart_itm["price"].'</div>';
echo '</li>';
$subtotal = ($cart_itm["price"]*$cart_itm["qty"]);
$total = ($total + $subtotal);
}
echo '</ol>';
echo '<span class="check-out-txt"><strong>Total : '.$currency.$total.'</strong> <a href="view_cart.php"><button>Check-out!</button></a></span>';
echo '<span class="empty-cart"><a href="cart_update.php?emptycart=1&return_url='.$current_url.'"><button>Empty Cart</button></a></span>';
}
} else {
echo 'Your cart is empty';
}
// This class is meant to be help keep your cart consistent and contained
// It has all the very basics
class ShoppingCart
{
private $currency;
public function __construct($currency = '$')
{
$this->setCurrency($currency);
}
public function setCurrency($currency)
{
$this->currency = $currency;
}
public function addToCart($item)
{
if(!isset($_SESSION['cart']))
$_SESSION['cart'] = array();
$item_code = filter_var($item['product_code'], FILTER_SANITIZE_STRING);
$qty = (!is_numeric($item["product_qty"]))? 1 : $item["product_qty"];
$price['qt'] = $item["priceBig"];
$price['pt'] = $item["price"];
$size = (!empty($item['productSize']))? $item['productSize'] : 'pt';
if(isset($_SESSION['cart'][$item_code]))
$_SESSION['cart'][$item_code][$size]['qty'] += $qty;
else {
$_SESSION['cart'][$item_code]['price'] = $price;
$_SESSION['cart'][$item_code][$size]['qty'] = $qty;
}
}
public function changeItemSize($item_code,$from = 'pt',$to = 'qt',$qty = false)
{
if(isset($_SESSION['cart'][$item_code][$from])) {
if(isset($_SESSION['cart'][$item_code][$to])){
$useQty = (!$qty)? $_SESSION['cart'][$item_code][$from]['qty'] : $qty;
$_SESSION['cart'][$item_code][$to]['qty'] += $useQty;
$remainder = $_SESSION['cart'][$item_code][$from]['qty'] - $useQty;
if($remainder <= 0)
unset($_SESSION['cart'][$item_code][$from]);
else
$_SESSION['cart'][$item_code][$from]['qty'] = $remainder;
}
else {
$_SESSION['cart'][$item_code][$to] = $_SESSION['cart'][$item_code][$from];
unset($_SESSION['cart'][$item_code][$from]);
}
}
}
public function removeFromCart($item_code)
{
if(isset($_SESSION['cart'][$item_code]))
unset($_SESSION['cart'][$item_code]);
}
public function getCurrency()
{
return $this->currency;
}
}
// This is just meant to pull some data from your db related
// to your products. You may see some value in expanding this out
class Products
{
private $con;
public function __construct($mysqli)
{
// You need to include the query function
require_once(FUNCTION_DIR.'/function.query.php');
$this->con = $mysqli;
}
public function getProductDetails($itemCodes = false)
{
if(empty($itemCodes))
return query("SELECT * FROM items ORDER BY id ASC",$this->con);
else {
foreach($itemCodes as $codes) {
$val = preg_replace('/[^a-zA-Z0-9]/','',$codes);
$val = trim($val);
if(empty($val))
continue;
$sql[] = "`product_code` = '{$val}'";
}
return query("SELECT * FROM `items` WHERE ".implode(" OR ",$sql)." ORDER BY `id` ASC",$this->con);
}
}
public function getHouseSpecials()
{
return query("SELECT * FROM items WHERE product_type = 'house_specials' ORDER BY id ASC",$this->con);
}
}
// This is just a fast and dirty way to run a query and return an array
// It's meant to return, so it's really only good for select statements
function query($sql,$mysqli)
{
$results = $mysqli->query($sql);
if(!$results)
return 0;
while($obj = $results->fetch_object()) {
$row[] = $obj;
}
return (!empty($row))? $row : array();
}
// If you don't have some sort of config file with some simple defines and such
// I would encourage it so it's easier to keep track of files and allow
// for the re-use of common elements
//*** Include your database file ***//
// Create some defines (if you don't already have some)
define('ROOT_DIR',__DIR__);
define('CLASS_DIR',ROOT_DIR.'/core/classes');
define('FUNCTION_DIR',ROOT_DIR.'/core/functions');
// Autoload classes
spl_autoload_register(function($class){
if(class_exists($class))
return;
if(is_file($file = CLASS_DIR.'/class.'.$class.'.php'))
include_once($file);
});
// Include config
require_once(__DIR__.'/config.php');
// Include the required functions to render
require_once(FUNCTION_DIR.'/function.cartView.php');
require_once(FUNCTION_DIR.'/function.renderCart.php');
// Create instance of products
$pEngine = new Products($mysqli);
// Create shopping cart
$shopEngine = new ShoppingCart('$');
// Do the cart actions if prompted
if(!empty($_REQUEST['add']))
$shopEngine->addToCart($_REQUEST);
elseif(!empty($_REQUEST['change'])) {
$to = $_REQUEST['productSize'];
$from = ($to == 'pt')? 'qt' : 'pt';
$shopEngine->changeItemSize($_REQUEST['product_code'],$from,$to);
}
elseif(!empty($_REQUEST['remove']))
$shopEngine->removeFromCart($_REQUEST['product_code']);
// Quick render of the cart
// This is retrieved from your products list
// This is just an example
$prods = $pEngine->getHouseSpecials();
foreach($prods as $items) {
echo cartView((object)$items);
}
// Quick demonstration of the session
if(!empty($_SESSION['cart'])) {
$details = $pEngine->getProductDetails(array_keys($_SESSION['cart']));
// you would just render the cart here
// This function does not work, I didn't have time
// to finish it...use print_r($details) to see what it returns
// echo renderCart($mysqli,$details,'$');
foreach($itemsInCart as $item_codes) {
if(isset($_SESSION['cart'][$item_codes]['qt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=pt">Item Change to Small</a></br />';
if(isset($_SESSION['cart'][$item_codes]['pt']))
echo '<a href="?change=true&product_code='.$item_codes.'&productSize=qt">Item Change to Large</a></br />';
echo '<a href="?remove=true&product_code='.$item_codes.'">Remove</a></br />';
}
}
//包含配置
需要一次（uuu DIR_uuu.'/config.php'）；
//包括渲染所需的函数
需要一次（FUNCTION_DIR.'/FUNCTION.cartView.php'）；
需要一次（FUNCTION_DIR.'/FUNCTION.renderCart.php'）；
//创建产品实例
$pEngine=新产品（$mysqli）；
//创建购物车
$shopEngine=新购物车（“$”）；
//如果出现提示，请执行购物车操作
如果（！empty（$_请求['add']））
$shopEngine->addToCart（$\u请求）；
elseif（！empty（$\u请求['change']））{
$to=$_请求['productSize']；
$from=（$to='pt'）？'qt'：'pt'；
$shopEngine->changeItemSize（$\请求['product\ u代码]，$from，$to）；
}
elseif（！empty（$\u请求['remove']））
$shopEngine->removeFromCart（$_请求['product_code']）；
//快速渲染购物车
//这是从您的产品列表中检索到的
//这只是一个例子
$prods=$pEngine->getHouseSpecials（）；
foreach（$prods作为$items）{
echo cartView（（对象）$项）；
}
//会议的快速演示
如果（！empty（$\u会话['cart']））{
$details=$pEngine->getProductDetails（数组_键（$_会话['cart']）；
//您只需在此处渲染购物车即可
//这个功能不起作用，我没有时间
//要完成它，请使用print\r（$details）查看它返回的内容
//echo renderCart（$mysqli，$details，“$”）；
foreach（$itemsInCart作为$item_代码）{
如果（isset（$_会话['cart'][$item_代码]['qt']））
回音“”；
如果（isset（$\会话['cart'][$item\u代码]['pt']））
回音“”；
回音“”；
}
}
您能告诉我如何将您的代码添加到我的代码中吗？因为我现在有点迷路了。谢谢是的，我会在今晚晚些时候做。我现在不在我的电脑前非常感谢你@Rasclatt