按项目中的值删除多维数组项目 - Delete Multidimensional Array Item By Values In the Item

Delete Multidimensional Array Item By Values In the Item

本文关键字：项目数组删除 | 更新日期: 2023-09-27

嘿，伙计们，我有这个数组：

Array
(
    [qty] => 1
    [id] => 2
    [name] => sallate me gjera plot 
    [price] => 8
    [category_id] => 25
    [dish_name] => sallate me gjera plot 
    [dish_id] => 2
    [dish_category_id] => 25
    [dish_qty] => 1
    [dish_price] => 8
)
Array
(
    [qty] => 1
    [id] => 1
    [name] => sallate cezar
    [price] => 12
    [category_id] => 25
    [dish_name] => sallate cezar
    [dish_id] => 1
    [dish_category_id] => 25
    [dish_qty] => 1
    [dish_price] => 12
)

我想做的是通过dish_id取消设置项目。我打算这样做：

if(isset($_SESSION["cart_products"]) && count($_SESSION["cart_products"])>0)
        { 
            foreach ($_SESSION["cart_products"] as $key =>$cart_itm)
            {   
                if($cart_itm["dish_id"]==$removable_id)
                {
                    unset($cart_itm[$key]);
                }
            }
        }

谁能告诉我我现在在做什么吗。。感谢：D

实际上，您需要从实际数组中unset数据，该数组是$_SESSION["cart_products"]而不是$cart_itm。

因此，将unset($cart_itm[$key]);更改为unset($_SESSION["cart_products"][$key])

作为替代方案，您可以使用带有匿名函数的array_filter()：

$removable_id = 1;
$_SESSION["cart_products"] = array_filter
( 
    $_SESSION["cart_products"], 
    function( $row ) use( $removable_id )
    {
        return $row['dish_id'] != $removable_id; 
    }
);
print_r( $_SESSION["cart_products"] );

将打印：

Array
(
    [0] => Array
        (
            [qty] => 1
            [id] => 2
            [name] => sallate me gjera plot 
            [price] => 8
            [category_id] => 25
            [dish_name] => sallate me gjera plot 
            [dish_id] => 2
            [dish_category_id] => 25
            [dish_qty] => 1
            [dish_price] => 8
        )
)