Question

我有以下要编辑的数组：

Array
(
    [qty_black_34] => 
    [qty_black_36] => 2
    [qty_black_38] => 
    [qty_black_40] => 
    [qty_black_42] => 
    [qty_black_44] => 
    [qty_black_48] => 
    [qty_powder_34] => 
    [qty_powder_36] => 
    [qty_powder_38] => 
    [qty_powder_40] => 
    [qty_powder_42] => 1
    [qty_powder_44] => 
    [qty_powder_48] => 
    [qty_red_34] => 
    [qty_red_36] => 
    [qty_red_38] => 2
    [qty_red_40] => 
    [qty_red_42] => 
    [qty_red_44] => 
    [qty_red_48] => )

我想要做的是构建另一个数组以仅保存带有值的元素。新数组必须看起来像这样“

Array
    (
        [0] => Array
            (
                [color] => black
                [size] => 36
                [quantity] => 2
            )

        [1] => Array
            (
                [color] => powder
                [size] => 42
                [quantity] => 1
            )

        [2] => Array
            (
                [color] => red
                [size] => 38
                [quantity] => 2
            )

    )

PHP是我正在使用的语言。

Answer 1

循环遍历数组并获取已设置值的元素。对于最终数组中的其他键/值，将用作原始数组中的键的字符串拆分为

$new_array = array();
foreach ($old_array as $key => value) {
    if ($value) {
        $key_split = explode('_', $key);
        $new_array[] = array('color' => $key_split[1], 'size' => $key_split[2], 'quantity' => $value);
    }
}

Answer 2

$products = array();
foreach($quantities as $key => $quantity){
    if($quantity != '') {
        list($q, $color, $size) = explode('_', $key);
        $products[] = array(
            'color' => $color,
            'size' => $size,
            'quantity' => $quantity
        );
    }
}

Demo

如何使用数组键作为派生数组的新值

2 个答案: