php动态数据商城（0110~0112）

编程思路

这次作业我主要从两点出发，1、完成商城前端静态页面并拆分；2、运用函数实现各页面动态获取数据！

静态页面动态化思路

作业总结

1、这次最难的就是理解和运用函数，foreach循环和if判断好理解，难在自定义函数function，如：

<?php
//定义函数随机获取数组信息
function getSeckillGoods($goods, $num)
{
    $seckillGoodsKeys = array_rand($goods, $num);
    //遍历数组得到随机商品
    foreach ($seckillGoodsKeys as $key) {
        $seckillGoods[] = $goods[$key];
    }
    return $seckillGoods;
}
$seckillGoods = getSeckillGoods($goods, 6);
?>

自己理解了几遍，尝试打印测试，最后还是回顾下视频才理解了，开始一直错误理解为$key不应该也是数组吗？，原来$seckillGoodsKeys是获取的键组成的数组，而$key则是循环赋值的变量；
2、写首页时理解了function函数后，后续的静态页面动态化顺利了很多，这次前端又回顾了一遍flex和grid布局，真好用；
3、这次从静态页面走向动态页面，编程过程中实时查看效果错误蛮多的，自己慢慢找原因解决，过程中查了w3c手册发现arry_rand这个函数手册没解释清楚，回看了视频才瞬间领悟，作为新手确实练习量不够经验知识积累都不够，路还长，真羡慕那些有2~3年经验的同学，哪怕1年也超级羡慕！

1.商城首页

• 演示代码

<?php include __DIR__ . '/shop_module/shop_public_header.php' ?>
<?php
//定义函数随机获取数组信息
function getSeckillGoods($goods, $num)
{
    $seckillGoodsKeys = array_rand($goods, $num);
    //遍历数组得到随机商品
    foreach ($seckillGoodsKeys as $key) {
        $seckillGoods[] = $goods[$key];
    }
    return $seckillGoods;
}
$seckillGoods = getSeckillGoods($goods, 4);
?>
    <main>
        <div class="goods">
            <!--正在秒杀-->
            <div class="title">
                <a href="shop_seckill.php">正在秒杀</a>
            </div>
            <!--从其他专区中随机抽取商品-->
            <div class="content">
                <?php foreach ($seckillGoods as $good) : ?>
                    <div>
                        <a href="<?php echo $good['url'] ?>"><img src="<?php echo STATIC_PATH . $good['pic'] ?>" alt=""></a>
                        <a href=""><?php echo $good['name'] ?></a>
                        <div>
                            <span>&yen <?php echo $good['price'] ?></span>
                            <button>立即购买</button>
                        </div>
                    </div>
                <?php endforeach; ?>
            </div>
        </div>
        <!--动态获取专区商品信息-->
        <?php foreach ($categories as $category) : ?>
            <div class="goods">
                <div class="title">
                    <a href="<?php echo $category['url'] ?>"><?php echo $category['name'] ?></a>
                </div>
                <div class="content">
                    <?php foreach ($goods as $good) : ?>
                        <!--获取属于当前专区的商品-->
                        <?php if ($good['cid'] === $category['id']) : ?>
                            <div>
                                <a href="<?php echo $good['url'] ?>"><img src="<?php echo STATIC_PATH . $good['pic'] ?>"
                                                                          alt=""></a>
                                <a href=""><?php echo $good['name'] ?></a>
                                <div>
                                    <span>&yen <?php echo $good['price'] ?></span>
                                    <button>立即购买</button>
                                </div>
                            </div>
                        <?php endif; ?>
                    <?php endforeach; ?>
                </div>
            </div>
        <?php endforeach; ?>
    </main>
<?php include __DIR__ . '/shop_module/shop_public_footer.php' ?>

• 效果图

2、商城频道页

• 演示代码

<?php include __DIR__ . '/shop_module/shop_public_header.php' ?>
<?php
// 获取栏目
$cid = $_GET['cid'];
// 获取栏目名称
function getCateName($cid, $categories) {
    foreach ($categories as $category) {
        if ($category['id'] === intval($cid)) {
            $cateName = $category['name'];
        }
    }
    return $cateName;
}
$cateName = getCateName($cid, $categories);
// 获取该栏目所有商品
function getCateGoods($cid, $goods) {
    //根据栏目id，获取对应的商品信息
    foreach ($goods as $good) {
        if ($good['cid'] === intval($cid)) {
            $currentGoods[] = $good;
        }
    }
    return $currentGoods;
}
$currentGoods = getCateGoods($cid, $goods);
?>
<?php include __DIR__ . '/shop_module/shop_public_footer.php' ?>

• 效果图

商城详情页

• 演示代码

<?php include __DIR__ . '/shop_module/shop_public_header.php' ?>
<?php
// 获取当前页面id
$id = $_GET['id'];
// 根据id获取当前商品信息
function getDetailGood($goods, $id)
{
    foreach ($goods as $good) {
        if ($good['id'] === intval($id)) {
            $detailGood = $good;
        }
    }
    return $detailGood;
}
$detailGood = getDetailGood($goods, $id);
?>

• 效果图

4、商城秒杀专题页

• 演示代码

<?php include __DIR__ . '/shop_module/shop_public_header.php' ?>
<?php
//定义函数随机获取数组信息
function getSeckillGoods($goods, $num)
{
    $seckillGoodsKeys = array_rand($goods, $num);
    //遍历数组得到随机商品
    foreach ($seckillGoodsKeys as $key) {
        $seckillGoods[] = $goods[$key];
    }
    return $seckillGoods;
}
$seckillGoods = getSeckillGoods($goods, 6);
?>

• 效果图