This article illustrates the implementation method of the PHP shopping cart. Share to everyone for your reference. The specific analysis is as follows:
Here we provide you with a simple PHP shopping cart code, from the increase in shopping products and purchase, in the mall development, this function is indispensable, we do not need a database, using a txt text file to operate the user shopping content.
<?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
$curr _product = Array ();
Loop through all products and pull up the product
That we are interested in
foreach ($master _products_list as $prod _id => $product) {
if (Trim ($prod _id) = = Trim ($_get[id]) {
$curr _product = $product;
}
}
Register our session
Session_register (' cart ');
if (session_is_registered (' cart ')) echo "has been registered";
if ($_post[ordered]) {//If they have chosen the product
Array_push ($_session[cart][products], array (Trim ($_post[id)), $_post[quantity]);
$_session[cart][num_items] + = $_post[quantity];
}
?>
<title>
<?php if ($_post[ordered]) {?>
Added <?php Echo $curr _product[name];?> to your shopping basket
<?php} else {?>
Add <?php echo $curr _product[name];?> to your shopping basket
<?php}?>
</title>
<body>
<?php if ($_post[ordered]) {?>
Add to Basket Success
<a href= "cart.php" > Return </a> Product List page.
<?php} else {?>
<form action= "<?php echo $PHP _self;?>" method= "POST" >
Product Name: <?php echo $curr _product[name];?>
<br>
Product Description: <?php echo $curr _product[desc];?>
<br>
Commodity price: rmb<?php echo $curr _product[price];?>
<br>
Number of items: <input type= "Text" size= "7" name= "Quantity" >
<input type= "hidden" name= "id" value= "<?php Echo $_get[id];?>" >
<input type= "hidden" name= "ordered" value= "1" >
<input type= "Submit" value= "Add to Shopping Bar" >
</form>
<?php}?>
</body>
To view the merchandise for your shopping cart, the code is as follows:
Copy Code code as follows:
<?php
//
cart.php:
//
Session_Start ();
Require ' lib.inc.php ';
To determine whether the basket Session variable cart is registered or not, register the cart variable
if (session_is_registered (' cart ')) {
Session_register (' cart ');
}
If the shopping basket is not initialized, the shopping basket is initialized
if (!isset ($_session[cart][num_items])) {
$_session[cart] = Array ("Num_items" => 0,
"Products" => array ());
}
From Site_lib.inc, loads the $master _products_list array
Loadproducts (); Loading Items List
?>
<title> demo session Tracking shopping Basket program </title>
<body>
<?php
if ($_session[cart][num_items]) {//If there is something to show
?>
<br>
<table border= "2" cellpadding= "5" cellspacing= "2" >
<tr>
<th>
Product Name
</th>
<th>
Product Description
</th>
<th>
Price
</th>
<th>
Number
</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= "Quantity Change" >
</form>
</td>
</tr>
<?php
}
?>
<tr>
<TD colspan= "2" align= "right" >
<b> Total: </b>
</td>
<TD colspan= "2" >
rmb:<?php echo $total;?>
</td>
<td> </td>
</tr>
</table>
<br>
<br>
<?php
}
?>
<br>
<i>
We offer the following items for sale:
</i>
<br>
<table border= "2" cellpadding= "5" cellspacing= "2" >
<tr>
<th>
Product Name
</th>
<th>
Product Description
</th>
<th>
Price
</th>
<th>
</th>
</tr>
<?php
Show all of the products
foreach ($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;?>" >
Add to Shopping basket
</a>
</td>
</tr>
<?php
}
?>
</table>
To modify the number of shopping carts, the code is as follows:
Copy Code code as follows:
<?php
//
change_quant.php:
Change the quantity of a 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);
?>
<title>
Quantity modification
</title>
<body>
<?php Echo $_post[quantity];?><a href= "cart.php" > Return </a> Product List page.
</body>
Function page, the user saves the contents of the shopping cart to the TXT database, the code is as follows:
Copy Code code as follows:
<?php
Items array
$master _products_list = Array ();
Loading Item data function
function Loadproducts () {
Global $master _products_list;
$filename = ' products.txt ';
$fp = @fopen ($filename, "R")
Or Die ("Open $filename file failed");
@flock ($FP, 1)
Or Die ("Lock $filename file failed");
Read File contents
while ($line = fgets ($fp, 1024)) {
List ($id, $name, $desc, $price) = Explode (' | ', $line); Read each row of data, the data to | GE Kai
$id = Trim ($id); Remove the end and end special symbols
$master _products_list[$id] = Array ("name" => $name,//Name
"desc" => $desc,//description
"Price" => $price); Price
}
@fclose ($FP)//close file
Or Die ("Shutdown $filename file failed");
}
?>
Very simple, we only use 4 files to achieve the use of PHP shopping cart function, okay this is just a simple PHP shopping cart code more complex need to consider more and better.
I hope this article will help you with your PHP program design.
