📘 Lesson · Lesson 43

Shopping Cart Logic

About

A shopping cart stores selected products in the session so they stay while the user browses. Here is the core logic.

Add to Cart

session_start();
$id = $_GET["id"];
if (!isset($_SESSION["cart"][$id])) {
    $_SESSION["cart"][$id] = 1;       // quantity
} else {
    $_SESSION["cart"][$id]++;
}
echo "Added to cart";

View Cart

foreach ($_SESSION["cart"] as $id => $qty) {
    echo "Product $id x $qty<br>";
}

Remove Item

unset($_SESSION["cart"][$_GET["id"]]);
echo "Removed";

Summary

Store cart items in $_SESSION["cart"] as id => quantity.
Add increments quantity; unset removes an item.

परिचय

Shopping cart चुने products को session में रखता है ताकि user के browse करते समय वे बने रहें। यह रहा core logic।

Cart में Add करें

session_start();
$id = $_GET["id"];
if (!isset($_SESSION["cart"][$id])) {
    $_SESSION["cart"][$id] = 1;       // quantity
} else {
    $_SESSION["cart"][$id]++;
}
echo "Added to cart";

Cart देखें

foreach ($_SESSION["cart"] as $id => $qty) {
    echo "Product $id x $qty<br>";
}

Item हटाएं

unset($_SESSION["cart"][$_GET["id"]]);
echo "Removed";

सारांश

Cart items को $_SESSION["cart"] में id => quantity के रूप में रखें।
Add quantity बढ़ाता है; unset item हटाता है।

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