《PHP應(yīng)用:php購物車實現(xiàn)方法》要點:
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PHP實戰(zhàn)本文實例講述了php購物車實現(xiàn)辦法.分享給大家供大家參考.具體分析如下:
PHP實戰(zhàn)這里我們?yōu)槟闾峁﹤€簡單的php購物車代碼,從增加購物產(chǎn)品與發(fā)生購買了,在商城開發(fā)中,這個功能是少不了的,我們不需要數(shù)據(jù)庫,用了txt文本文件來操作用戶購物的內(nèi)容.
PHP實戰(zhàn)增加商品到購物車,代碼如下:
代碼如下:
<?php
//
// add_item.php:
//? Add an item to the shopping cart.
//
session_start();
if (session_is_registered('cart')) {
??? session_register('cart');
}
?
require 'lib.inc.php'; // LoadProducts()
?
LoadProducts(); // Load products in $master_products_list
?
// Make $curr_product global
$curr_product = array();
?
// Loop through all the products and pull up the product
// that we are interested in
?
foreach ($master_products_list as $prod_id => $product) {
??? if (trim($prod_id) == trim($_GET[id])) {
??????? $curr_product = $product;
??? }
}
?
// Register our session
//session_register('cart');
//if(session_is_registered('cart')) echo "已經(jīng)注冊";
?
if ($_POST[ordered]) {? // If they have chosen the product
?
??? array_push($_SESSION[cart][products], array(trim($_POST[id]), $_POST[quantity]));
??? $_SESSION[cart][num_items] += $_POST[quantity];
}
?>
<html>
<head>
??? <title>
??? <?php if ($_POST[ordered]) {? ?>
??????? 已經(jīng)添加 <?php echo $curr_product[name]; ?> 到您的購物籃
??? <?php } else {? ?>
??????? 添加 <?php echo $curr_product[name]; ?> 到您的購物籃
??? <?php } ?>
??? </title>
</head>
<body>
<?php if ($_POST[ordered]) {? ?>
??? <h1><?php echo $curr_product[name]; ?>
??????? 添加至購物籃成功</h1>
?
??? <a href="cart.php">返回</a> 商品列表頁面.
<?php }? else {? ?>
??? <h1>添加 <?php echo $curr_product[name]; ?> 到您的購物籃</h1>
?
??? <form action="<?php echo $PHP_SELF; ?>" method="post">
??? 商品名稱: <?php echo $curr_product[name]; ?>
??? <br>
??? 商品說明: <?php echo $curr_product[desc]; ?>
??? <br>
??? 商品單價: RMB<?php echo $curr_product[price]; ?>
??? <br>
??? 商品數(shù)量: <input type="text" size="7" name="quantity">
??? <input type="hidden" name="id" value="<?php echo $_GET[id]; ?>">
??? <input type="hidden" name="ordered" value="1">
??? <input type="submit" value="添加至購物欄">
??? </form>
<?php } ?>
</body>
</html>
PHP實戰(zhàn)查看購物車的商品,代碼如下:
代碼如下:
<?php
//
// cart.php:
//
session_start();
?
require 'lib.inc.php';
//判斷購物籃會話變量cart是否注冊,不注冊則注冊cart變量
if (session_is_registered('cart')) {
??? session_register('cart');
}
?
// 如果購物籃沒有初始化,則初始化購物籃
if (!isset($_SESSION[cart][num_items])) {
??? $_SESSION[cart] = array("num_items" => 0,
????????????????? "products"? => array());
}
// From site_lib.inc, Loads the $master_products_list array
LoadProducts(); //載入物品列表
?>
<html>
<head>
??? <title>演示會話跟蹤的購物籃程序</title>
</head>
?
<body>
?
<h1>歡迎進入網(wǎng)上商店</h1>
?
<?php
if ($_SESSION[cart][num_items]) {? // If there is something to show
?>
<h2>當前在購物籃里的物品</h2>
<br>
<table border="2" cellpadding="5" cellspacing="2">
<tr>
??? <th>
??????? 商品名稱
??? </th>
??? <th>
??????? 商品說明
??? </th>
??? <th>
??????? 單價
??? </th>
??? <th>
??????? 數(shù)量
??? </th>
??? <th>?
????????
??? </th>
</tr>
<?php
??
??? // Loop through the products
??? foreach ($_SESSION[cart][products] as $i => $product) {
??????? $product_id = $product[0];
??????? $quantity?? = $product[1];
?
??????? $total += $quantity *
????????????????? (double)$master_products_list[$product_id][price];
?>
<tr>
??? <td>
??????? <?php echo $master_products_list[$product_id][name]; ?>
??? </td>
??? <td>
??????? <?php echo $master_products_list[$product_id][desc]; ?>
??? </td>
??? <td>
??????? <?php echo $master_products_list[$product_id][price]; ?>
??? </td>
??? <td>
??????? <form action="change_quant.php" method="post">
??????? <input type="hidden" name="id" value="<?php echo $i; ?>">
??????? <input type="text" size="3" name="quantity"
??????????????? value="<?php echo $quantity; ?>">
??? </td>
??? <td>
??????? <input type="submit" value="數(shù)量更改">
??????? </form>
??? </td>
</tr>
<?php
??? }
?>
<tr>
??? <td colspan="2" ALIGN="right">
?????? <b>合計: </b>
??? </td>
??? <td colspan="2">
??????? RMB:<?php echo $total; ?>
??? </td>
?<td>?</td>
</tr>
</table>
<br>
<br>
<?php
}
?>
?
<h2>商店待出售的商品</h2>
<br>
<i>
??? 我們提供以下商品待售:
</i>
<br>
<table border="2" cellpadding="5" cellspacing="2">
<tr>
??? <th>
??????? 商品名稱
??? </th>
??? <th>
??????? 商品說明
??? </th>
??? <th>
??????? 單價
??? </th>
??? <th>?
????????
??? </th>
</tr>
<?php
??? // Show all of the products
??? foreach ($master_products_list as $product_id => $item) {
?>
<tr>
??? <td>
??????? <?php echo $item[name]; ?>
??? </td>
??? <td>
??????? <?php echo $item[desc]; ?>
??? </td>
??? <td>
??????? $<?php echo $item[price]; ?>
??? </td>
??? <td>
??????? <a href="add_item.php?id=<?php echo $product_id; ?>">
??????????? 添加至購物籃
??????? </a>
??? </td>
</tr>
<?php
??? }
?
?>
</table>
PHP實戰(zhàn)修改購物車的數(shù)量,代碼如下:
代碼如下:
<?php
//
// change_quant.php:
//?? Change the quantity of an item in the shopping cart.
//
session_start();
if (session_is_registered('cart')) {
??? session_register('cart');
}
?
// Typecast to int, making sure we access the
// right element below
$i = (int)$_POST[id];
?
// Save the old number of products for display
// and arithmetic
$old_num = $_SESSION[cart][products][$i][1];
?
if ($_POST[quantity]) {
??? $_SESSION[cart][products][$i][1] = $_POST[quantity]; //change the quantity
} else {
??? unset($_SESSION[cart][products][$i]); // Send the product into oblivion
}
?
// Update the number of items
$_SESSION[cart][num_items] = ($old_num >$_POST[quantity]) ?
?????????????????? $_SESSION[cart][num_items] - ($old_num-$_POST[quantity]) :
?????????????????? $_SESSION[cart][num_items] + ($_POST[quantity]-$old_num);
?>
?
<html>
<head>
??? <title>
??????? 數(shù)量修改
??? </title>
</head>
<body>
??? <h1> 將數(shù)量: <?php echo $old_num; ?> 更改為
???????? <?php echo $_POST[quantity]; ?></h1>
??? <a href="cart.php">返回</a> 商品列表頁面.
</body>
</html>
PHP實戰(zhàn)功能頁面,用戶把購物車里面的內(nèi)容保存到txt數(shù)據(jù)庫,代碼如下:
代碼如下:
<?php
//物品數(shù)組
$master_products_list = array();
?
?
//載入物品數(shù)據(jù)函數(shù)
function LoadProducts() {
??? global $master_products_list;
??? $filename = 'products.txt';
?
??? $fp = @fopen($filename, "r")
??????? or die("打開 $filename 文件失敗");
??? @flock($fp, 1)
??????? or die("鎖定 $filename 文件失敗");
?
??? //讀取文件內(nèi)容
??? while ($line = fgets($fp, 1024)) {
??????? list($id, $name, $desc, $price) = explode('|', $line); //讀取每行數(shù)據(jù),數(shù)據(jù)以| 格開
??????? $id = trim($id); //去掉首尾特殊符號
??????? $master_products_list[$id] = array("name" =>? $name, //名稱
?????????????????????????????????????????? "desc" =>? $desc, //說明
?????????????????????????????????????????? "price" => $price); //單價
??? }
?
??? @fclose($fp)? //關(guān)閉文件
??????? or die("關(guān)閉 $filename 文件失敗");
}
?>
很簡單,我們只用了4個文件就實現(xiàn)用php 做好購物車功能,好了這只是一款簡單的php購物車代碼更復(fù)雜的需要考慮更多更好.
PHP實戰(zhàn)希望本文所述對大家的php程序設(shè)計有所贊助.
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