Question

我将$ _SESSION [＆＃39; items＆＃39;]存储为购物车商品，结构如下：

的print_r（$ _ SESSION [＆＃39;项目＆＃39;]）：

Array
(
[0] => Array
    (
        [p_name] => Germany Fully Synthetic Engine Oil 5w40, 4L
        [p_code] => 15177651
        [p_coverImg] => 13-1460446338-kMTXa.jpg
        [p_id] => 13
        [p_price] => 126.00
        [p_qty] => 2
    )

[1] => Array
    (
        [p_name] => BetterBody Foods Organic Cold Pressed Extra Virgin Coconut Oil
        [p_code] => 15599414
        [p_coverImg] => 9-1460445708-6XlfS.jpg
        [p_id] => 9
        [p_price] => 278.40
        [p_qty] => 5
    )

[2] => Array
    (
        [p_name] => X-Dot Motorbike Helmet G88 + Bogo Visor (Tinted)
        [p_code] => 2102649
        [p_coverImg] => 12-1460446199-wI5qx.png
        [p_id] => 12
        [p_price] => 68.00
        [p_alt-variation-1] => Blue
        [p_alt-variation-2] => L
        [p_qty] => 2
    )

）

所以删除项目我使用unset($_SESSION['items'][$arr_key]);

从上面的数组中我说unset($_SESSION['items'][0]);，在所有I print_r($_SESSION['items'])之后，数组键不再以[0]开头：

Array
(
[1] => Array
    (
        [p_name] => BetterBody Foods Organic Cold Pressed Extra Virgin Coconut Oil
        [p_code] => 15599414
        [p_coverImg] => 9-1460445708-6XlfS.jpg
        [p_id] => 9
        [p_price] => 278.40
        [p_qty] => 5
    )

[2] => Array
    (
        [p_name] => Wonder Belt Set (2pcs)
        [p_code] => 33134567
        [p_coverImg] => 2-1460445193-vZwGV.jpg
        [p_id] => 2
        [p_price] => 199.00
        [p_qty] => 1
    )

)

如何在删除某个项目后再次使用键0恢复这些会话数组？

Answer 1

建议您使用array_values()来求助键。一个例子：

$array = [1, 2, 3];
unset($array[0]);

print "<pre>";
print_r($array);
print "</pre>";

<强>输出：

Array
(
    [1] => 2
    [2] => 3
)

// Resort keys using array_values
$array = array_values($array);
print "<pre>";
print_r($array);
print "</pre>";

使用array_values后的输出：

Array
(
    [0] => 2
    [1] => 3
)

Answer 2

使用array_values（）

array_values() returns all the values from the array and indexes the array numerically.

http://php.net/manual/en/function.array-values.php

Answer 3

您应该使用array_values作为

array_values($_SESSION['items']);

从会话数组中删除项后，php重新排序数组键

3 个答案: