结合PHP和Javascript从购物车中删除商品
结合PHP和Javascript从购物车中删除商品
提问于 2018-07-29 21:01:57
我正在为我的姐姐建立一个在线商店，当我单击产品的X图标(onclick="") )时，我正在努力从购物车($_SESSION)中删除特定的商品。
<?php
if (empty($_SESSION['cart'])) {
$_SESSION['cart'] = array();
}
?>
<div class="cart-content d-flex">
<!-- Cart List Area -->
<div class="cart-list">
<?php
$subtotal = 0;
$livrare = 17;
$subtotal_modif = 0 . " Lei";
$object = new Produs();
$cartItems = $_SESSION['cart'];
foreach ($cartItems as $item):
$rows = $object->getRows("SELECT * FROM produs");
foreach ($rows as $row) {
//$subtotal += $row['pret_produs'];
if ($item['id'] == $row['id_produs']) {
$imagini = $object->getRows("SELECT * FROM imagini WHERE id_produs_imagine = ? LIMIT 1", [$row['id_produs']]);
$pret = $row['pret_produs'];
$pret_modif = str_replace('.', ',', $row['pret_produs']) . " LEI";
$pret_vechi = $row['pret_vechi_produs'];
$pret_redus_modif = str_replace('.', ',', $row['pret_vechi_produs']) . " LEI";
$subtotal = $subtotal + ($pret * $item['cantitate']);
$subtotal_modif = str_replace('.', ',', $subtotal) . " LEI";
?>
<!-- Single Cart Item -->
<div class="single-cart-item">
<a href="#" class="product-image">
<?php foreach ($imagini as $img) {
echo '<img src="'. $object->photoPath() . $img['nume_imagine'] .'" alt="">';
} ?>
<!-- Cart Item Desc -->
**<div class="cart-item-desc">
<span class="product-remove"><i onclick="removeItem('<?php $item['id']; ?>')" class="fa fa-close" aria-hidden="true"></i></span>**
<!-- <span class="badge">Mango</span> -->
<h6><?php echo $row['nume_produs']; ?></h6>
<p class="size">Marime: <?php echo $item['marime']; ?></p>
<p class="color">Cantitate: <?php echo $item['cantitate']; ?></p>
<p class="price"><?php echo $pret; ?></p>
</div>
</a>
</div>
<?php } }
endforeach;
?>
</div>我正在考虑在页面末尾做一些类似的事情，但我不知道如何正确地做：
<script>
function removeItem(itemID) {
<?php unset($_SESSION['cart']['<script>itemID</script>']); ?>
}
</script>我不知道如何结合PHP和JavaScript。
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-07-29 21:31:09
您可以将以下代码放在PHP脚本的顶部：
if ( empty( $_SESSION['cart'] ) ) {
$_SESSION['cart'] = [];
}
if ( isset( $_POST['remove_item'] ) ) {
$itemID = $_POST['remove_item'];
if ( isset( $_SESSION['cart'][ $itemID ] ) ) {
unset( $_SESSION['cart'][ $itemID ] );
}
echo $itemID;
die();
}
// THE REST OF YOUR PHP CODE.根据项的id为项的容器提供唯一的id：
<div class="single-cart-item" id="single-cart-item-<?php echo $item['id']; ?>">
<!-- --------------- -->
</div>在你的JS中是这样的：
<script type="text/javascript">
function removeItem( itemID ) {
// make AJAX request to server to remove item from session.
var xhttp = new XMLHttpRequest();
xhttp.open("POST", "cart.php", true);
xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhttp.send("remove_item=" + itemID);
xhttp.onreadystatechange = function() {
if (this.readyState === 4 && this.status === 200) {
var element = document.getElementById("single-cart-item-" + this.responseText);
if (element !== null) {
element.remove();
}
}
};
}
</script>函数removeItem( itemID )正在对您的PHP脚本进行AJAX调用。它将项目ID作为POST值传递。将cart.php替换为正确的路径(购物车页面的URL)。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51580579
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