php购物车代码
这里我们为你提供个简单的php购物车代码,从增加购物产品与发生购买了,在商城开发中,这个功能是少不了的,我们不需要数据库,用了txt文本文件来操作用户购物的内容.
增加商品到购物车,代码如下:
<?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 "已经注册"; 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]) { ?> 已经添加 <?php echo $curr_product [name]; ?> 到您的购物篮 <?php } else { ?> 添加 <?php echo $curr_product [name]; ?> 到您的购物篮 <?php } ?> </title> </head> <body> <?php if ( $_POST [ordered]) { ?> <h1><?php echo $curr_product [name]; ?> 添加至购物篮成功</h1> <a href= "cart.php" >返回</a> 商品列表页面. <?php } else { ?> <h1>添加 <?php echo $curr_product [name]; ?> 到您的购物篮</h1> <form action= "<?php echo $PHP_SELF; ?>" method= "post" > 商品名称: <?php echo $curr_product [name]; ?> <br> 商品说明: <?php echo $curr_product [desc]; ?> <br> 商品单价: RMB<?php echo $curr_product [price]; ?> <br> 商品数量: <input type= "text" size= "7" name= "quantity" > <input type= "hidden" name= "id" value= "<?php echo $_GET[id]; ?>" > <input type= "hidden" name= "ordered" value= "1" > //开源代码phpfensi测试数据 <input type= "submit" value= "添加至购物栏" > </form> <?php } ?> </body> </html>查看购物车的商品,代码如下:
<?php // // cart.php: HdhCmsTestphpfensi测试数据 // session_start(); require 'lib.inc.php' ; //判断购物篮会话变量cart是否注册，不注册则注册cart变量 if (session_is_registered( 'cart' )) { session_register( 'cart' ); } // 如果购物篮没有初始化，则初始化购物篮 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(); //载入物品列表 ?> <html> <head> <title>演示会话跟踪的购物篮程序</title> </head> <body> <h1>欢迎进入网上商店</h1> <?php if ( $_SESSION [cart][num_items]) { // If there is something to show ?> <h2>当前在购物篮里的物品</h2> <br> <table border= "2" cellpadding= "5" cellspacing= "2" > <tr> <th> 商品名称 </th> <th> 商品说明 </th> <th> 单价 </th> <th> 数量 </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= "数量更改" > </form> </td> </tr> <?php } ?> <tr> <td colspan= "2" ALIGN= "right" > <b>合计: </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> 我们提供以下商品待售: </i> <br> <table border= "2" cellpadding= "5" cellspacing= "2" > <tr> <th> 商品名称 </th> <th> 商品说明 </th> <th> 单价 </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; ?>" > 添加至购物篮 </a> </td> </tr> <?php } ?> </table>修改购物车的数量,代码如下:
<?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> 数量修改 </title> </head> <body> <h1> 将数量： <?php echo $old_num ; ?> 更改为 <?php echo $_POST [quantity]; ?></h1> <a href= "cart.php" >返回</a> 商品列表页面. </body> </html>功能页面,用户把购物车里面的内容保存到txt数据库,代码如下:
<?php //物品数组 $master_products_list = array (); //载入物品数据函数 function LoadProducts() { global $master_products_list ; $filename = 'products.txt' ; $fp = @ fopen ( $filename , "r" ) or die ( "打开 $filename 文件失败" ); @ flock ( $fp , 1) or die ( "锁定 $filename 文件失败" ); //读取文件内容 while ( $line = fgets ( $fp , 1024)) { list( $id , $name , $desc , $price ) = explode ( '|' , $line ); //读取每行数据，数据以| 格开 $id = trim( $id ); //去掉首尾特殊符号 $master_products_list [ $id ] = array ( "name" => $name , //名称 "desc" => $desc , //说明 "price" => $price ); //单价 } @fclose( $fp ) //关闭文件 or die ( "关闭 $filename 文件失败" ); } ?>很简单,我们只用了4个文件就实现用php 做好购物车功能,好了这只是一款简单的php购物车代码更复杂的需要考虑更多更好.
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