php SESSION中的多维数组
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Multidimensional array in php SESSION
提问by Sohail Malik
I am having problem with updating an array element with in $_SESSIONvariable of PHP. This is the basic structure:
我在用$_SESSIONPHP 变量更新数组元素时遇到问题。这是基本结构：
$product = array();
$product['id'] = $id;
$product['type'] = $type;
$product['quantity'] = $quantity;
And then by using array_push()function I insert that product in SESSION variable.
然后通过使用array_push()函数，我将该产品插入到 SESSION 变量中。
array_push($_SESSION['cart'], $product);
Now this is the main part where i m facing problem:
现在这是我面临问题的主要部分：
foreach($_SESSION['cart'] as $product){
if($id == $product['id']){
$quantity = $product['quantity'];
$quantity += 1;
$product['quantity'] = $quantity;
}
}
I want to increment product quantity within $_SESSION['cart']variable. How can I do that?
我想在$_SESSION['cart']变量内增加产品数量。我怎样才能做到这一点？
回答by Marc B
Don't blindly stuff the product into your session. Use the product's ID as the key, then it's trivial to find/manipulate that item in the cart:
不要盲目地将产品塞进您的会话中。使用产品的 ID 作为键，然后在购物车中查找/操作该项目是微不足道的：
$_SESSION['cart'] = array();
$_SESSION['cart'][$id] = array('type' => 'foo', 'quantity' => 42);
$_SESSION['cart'][$id]['quantity']++; // another of this item to the cart
unset($_SESSION['cart'][$id]); //remove the item from the cart
回答by Budi Liauw
this not best answers for u...but hope can help u guys im not expert coders, and just learn coding in this forum ^,^ .You must always trying to solved. for more example hope can help to update value quantity:
这对你来说不是最好的答案......但希望可以帮助你们，我不是专家编码员，只是在这个论坛上学习编码^，^。你必须总是试图解决。更多示例希望可以帮助更新价值数量：
<?php
if(isset($_POST['test'])) {
$id =$_POST['id'];
$newitem = array(
'idproduk' => $id,
'nm_produk' => 'hoodie',
'img_produk' => 'images/produk/hodie.jpg',
'harga_produk' => '20',
'qty' => '2'
);
//if not empty
if(!empty($_SESSION['cart']))
{
//and if session cart same
if(isset($_SESSION['cart'][$id]) == $id) {
$_SESSION['cart'][$id]['qty']++;
} else {
//if not same put new storing
$_SESSION['cart'][$id] = $newitem;
}
} else {
$_SESSION['cart'] = array();
$_SESSION['cart'][$id] = $newitem;
}
}
?>
<form method="post">
<input type="text" name="id" value="1">
<input type="submit" name="test" value="test">
<input type="submit" name="unset" value="unset">
</form>
