Just archiving this project from my Open Source Software class.

2021-01-26 16:41:13 -06:00
commit d1bac9a520
50 changed files with 19232 additions and 0 deletions
@@ -0,0 +1,51 @@
+<?php
+// Add an item to the cart
+function add_item($key, $quantity) {
+    global $products;
+    if ($quantity < 1) return;
+
+    // If item already exists in cart, update quantity
+    if (isset($_SESSION['cart12'][$key])) {
+        $quantity += $_SESSION['cart12'][$key]['qty'];
+        update_item($key, $quantity);
+        return;
+    }
+
+    // Add item
+    $cost = $products[$key]['cost'];
+    $total = $cost * $quantity;
+    $item = array(
+        'name' => $products[$key]['name'],
+        'cost' => $cost,
+        'qty'  => $quantity,
+        'total' => $total
+    );
+    $_SESSION['cart12'][$key] = $item;
+}
+
+// Update an item in the cart
+function update_item($key, $quantity) {
+    global $products;
+    $quantity = (int) $quantity;
+    if (isset($_SESSION['cart12'][$key])) {
+        if ($quantity <= 0) {
+            unset($_SESSION['cart12'][$key]);
+        } else {
+            $_SESSION['cart12'][$key]['qty'] = $quantity;
+            $total = $_SESSION['cart12'][$key]['cost'] *
+                     $_SESSION['cart12'][$key]['qty'];
+            $_SESSION['cart12'][$key]['total'] = $total;
+        }
+    }
+}
+
+// Get cart subtotal
+function get_subtotal() {
+    $subtotal = 0;
+    foreach ($_SESSION['cart12'] as $item) {
+        $subtotal += $item['total'];
+    }
+    $subtotal = number_format($subtotal, 2);
+    return $subtotal;
+}
+?>