2.1 版本文件
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<?php
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// 结算下单：登录后填写收货信息，生成订单并扣减库存
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require __DIR__ . '/includes/init.php';
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requireLogin('checkout.php');
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$pageTitle = '结算';
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$user = currentUser();
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$cart = $_SESSION['cart'] ?? [];
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$items = [];
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$total = 0;
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if (!empty($cart)) {
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$ids = array_keys($cart);
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$ph = implode(',', array_fill(0, count($ids), '?'));
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$stmt = db()->prepare('SELECT * FROM ' . tn('products') . ' WHERE id IN (' . $ph . ') AND status = 1');
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$stmt->execute($ids);
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foreach ($stmt->fetchAll() as $p) {
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$qty = (int) $cart[$p['id']];
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if ($qty > $p['stock']) $qty = $p['stock'];
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$pointsSub = (!empty($p['points_price']) ? (int)$p['points_price'] * $qty : 0);
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$items[] = ['p' => $p, 'qty' => $qty, 'points_sub' => $pointsSub];
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}
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}
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// 积分支付可用性：仅当订单内所有商品都设置了积分价
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$pointsElg = !empty($items);
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$pointsTotal = 0;
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foreach ($items as $it) {
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$pp = (int) ($it['p']['points_price'] ?? 0);
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if ($pp <= 0) { $pointsElg = false; break; }
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$pointsTotal += $pp * $it['qty'];
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}
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if ($pointsTotal <= 0) { $pointsElg = false; }
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$userPoints = 0;
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if (isLoggedIn()) {
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$userPoints = getUserPoints($user['id']);
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}
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$err = '';
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if (empty($items)) {
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redirect('cart.php');
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}
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if ($_SERVER['REQUEST_METHOD'] === 'POST') {
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verifyCsrf();
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$contact = trim($_POST['contact'] ?? '');
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$contactEmail = trim($_POST['contact_email'] ?? '');
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$address = trim($_POST['address'] ?? '');
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$note = trim($_POST['note'] ?? '');
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if ($contact === '') $err = '请填写联系人';
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elseif ($address === '') $err = '请填写收货地址';
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elseif ($contactEmail === '') $contactEmail = $user['email']; // 留空则使用账号邮箱
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elseif (!filter_var($contactEmail, FILTER_VALIDATE_EMAIL)) $err = '联系邮箱格式不正确';
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if ($err === '') {
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$payType = ($pointsElg && ($_POST['pay_type'] ?? '') === 'points') ? 'points' : 'direct';
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if ($payType === 'points') {
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if ($userPoints < $pointsTotal) {
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$err = '积分不足，当前 ' . $userPoints . ' 分，本单需 ' . $pointsTotal . ' 分';
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}
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}
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}
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if ($err === '') {
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$pdo = db();
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try {
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$pdo->beginTransaction();
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// 二次校验库存
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foreach ($items as $it) {
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$chk = $pdo->prepare('SELECT stock FROM ' . tn('products') . ' WHERE id = ? FOR UPDATE');
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$chk->execute([$it['p']['id']]);
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$row = $chk->fetch();
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if (!$row || $row['stock'] < $it['qty']) {
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throw new Exception('「' . $it['p']['name'] . '」库存不足，请返回购物车调整');
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}
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}
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// 计算本单周期（取商品中最大的周期天数）与到期时间
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$maxPeriod = 0;
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foreach ($items as $it) {
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$maxPeriod = max($maxPeriod, (int) ($it['p']['period_days'] ?? 0));
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}
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$expiresAt = $maxPeriod > 0 ? date('Y-m-d H:i:s', strtotime("+$maxPeriod days")) : null;
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// 本商城不收取现金，现金合计固定记 0；积分支付时抵扣并记流水
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$orderTotal = 0;
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$pointsUsed = 0;
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if ($payType === 'points') {
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$pointsUsed = $pointsTotal;
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$pdo->prepare('UPDATE ' . tn('users') . ' SET points = points - ? WHERE id = ? AND points >= ?')
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->execute([$pointsUsed, $user['id'], $pointsUsed]);
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$bal = getUserPoints($user['id']);
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$pdo->prepare('INSERT INTO ' . tn('points_log') . ' (user_id,type,amount,balance,remark,created_at) VALUES (?,?,?,?,?,NOW())')
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->execute([$user['id'], 'purchase', -$pointsUsed, $bal, '积分兑换：' . $orderNo]);
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}
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// 生成订单号
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$orderNo = 'FNW' . date('Ymd') . strtoupper(substr(md5(uniqid($user['id'], true)), 0, 10));
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$pdo->prepare('INSERT INTO ' . tn('orders') . ' (order_no,user_id,total,status,contact,contact_email,address,note,period_days,expires_at,pay_type,points_used,created_at) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,NOW())')
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->execute([$orderNo, $user['id'], $orderTotal, 'paid', $contact, $contactEmail, $address, $note, $maxPeriod, $expiresAt, $payType, $pointsUsed]);
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$orderId = $pdo->lastInsertId();
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foreach ($items as $it) {
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// 商城已取消现金支付，价格字段保留为 0 供历史兼容
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$pdo->prepare('INSERT INTO ' . tn('order_items') . ' (order_id,product_id,name,price,qty,subtotal,period_days) VALUES (?,?,?,?,?,?,?)')
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->execute([$orderId, $it['p']['id'], $it['p']['name'], 0, $it['qty'], 0, (int) ($it['p']['period_days'] ?? 0)]);
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$pdo->prepare('UPDATE ' . tn('products') . ' SET stock = stock - ? WHERE id = ?')
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->execute([$it['qty'], $it['p']['id']]);
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}
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$pdo->commit();
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$_SESSION['cart'] = [];
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redirect('myorders.php?paid=' . urlencode($orderNo));
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} catch (Exception $e) {
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$pdo->rollBack();
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$err = $e->getMessage();
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}
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}
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}
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require 'includes/header.php';
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?>
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<section class="section">
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<h2 class="sec-title"><i class="fas fa-credit-card"></i> 订单结算</h2>
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<div class="checkout">
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<div class="co-items">
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<h3>商品清单</h3>
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<?php foreach ($items as $it): ?>
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<div class="co-row">
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<span><?= h($it['p']['name']) ?> × <?= $it['qty'] ?></span>
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<span><?= $it['points_sub'] > 0 ? (int)$it['points_sub'] . ' 积分' : '直接下单' ?></span>
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</div>
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<?php endforeach; ?>
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</div>
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<form method="post" action="" class="co-form">
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<?= csrfField() ?>
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<h3>收货信息</h3>
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<?php if ($err): ?><p class="form-err"><?= h($err) ?></p><?php endif; ?>
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<label>联系人<input type="text" name="contact" value="<?= h($_POST['contact'] ?? $user['username']) ?>" required></label>
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<label>联系邮箱<input type="email" name="contact_email" value="<?= h($_POST['contact_email'] ?? $user['email']) ?>" placeholder="用于接收订单/发货通知" required></label>
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<label>收货地址<input type="text" name="address" value="<?= h($_POST['address'] ?? '') ?>" required></label>
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<label>备注<input type="text" name="note" value="<?= h($_POST['note'] ?? '') ?>" placeholder="选填"></label>
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<?php if ($pointsElg): ?>
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<div class="co-pay">
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<h3>支付方式</h3>
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<input type="hidden" name="pay_type" value="points">
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<p class="pay-opt"><i class="fas fa-coins"></i> 积分支付（<?= $pointsTotal ?> 积分）<span class="muted" style="margin-left:10px;font-size:.85em;">当前积分 <?= (int)$userPoints ?></span></p>
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</div>
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<?php else: ?>
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<input type="hidden" name="pay_type" value="direct">
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<?php endif; ?>
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<p class="co-tip">下单后如有积分价格要求，用积分支付；无积分价格，直接支付即可（发工单即代表您已同意资源领取/续期规定）。</p>
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<button type="submit" class="btn btn-primary" style="width:100%;">提交订单</button>
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</form>
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</div>
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</section>
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<?php require 'includes/footer.php'; ?>
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