我有一系列值：
Array
(
[0] => Array
(
[product_colour_sizes_id] => 37105
[product_colour_sizes_product_id] => 810
[product_colour_sizes_option_value_colour_id] => 61
[product_colour_sizes_option_value_size_id] => 904
[quantity] => 999
[product_colour_sizes_name_sizes] => 16-165
[product_colour_sizes_name_colours] => Red
)
[1] => Array
(
[product_colour_sizes_id] => 37104
[product_colour_sizes_product_id] => 810
[product_colour_sizes_option_value_colour_id] => 61
[product_colour_sizes_option_value_size_id] => 905
[quantity] => 999
[product_colour_sizes_name_sizes] => 17-175
[product_colour_sizes_name_colours] => Red
)
[2] => Array
(
[product_colour_sizes_id] => 37103
[product_colour_sizes_product_id] => 810
[product_colour_sizes_option_value_colour_id] => 61
[product_colour_sizes_option_value_size_id] => 906
[quantity] => 999
[product_colour_sizes_name_sizes] => 185-19
[product_colour_sizes_name_colours] => Red
)
[3] => Array
(
[product_colour_sizes_id] => 37102
[product_colour_sizes_product_id] => 810
[product_colour_sizes_option_value_colour_id] => 61
[product_colour_sizes_option_value_size_id] => 907
[quantity] => 999
[product_colour_sizes_name_sizes] => 19.5
[product_colour_sizes_name_colours] => Red
)
)
然后我有一个foreach循环，它迭代上面的数据并将每个数组减少到对应于不同[product_colour_sizes_name_sizes]的单个行。但是我有一个问题，即没有比较最后一个数组。这是我的循环：
foreach($product_combinations as $key => $product_combination){
if($key > -1){
if($product_combinations[$key+1]['product_colour_sizes_name_colours']
== $product_combinations[$key]['product_colour_sizes_name_colours']
){
$color = $product_combinations[$key]['product_colour_sizes_name_colours'];
$color['name'] = $color;
$id = $product_combinations[$key]['product_colour_sizes_option_value_size_id'];
$sizes[$id] = $product_combinations[$key]['product_colour_sizes_name_sizes'];
$quantity = $product_combinations[$key]['quantity'];
$sizes['quantity'] = $quantity;
/* Dont forget theses*/
$sizes['product_colour_sizes_id'] = $product_combination['product_colour_sizes_id'];
$sizes['product_colour_sizes_product_id'] = $product_combination['product_colour_sizes_product_id'];
$sizes['product_colour_sizes_option_value_colour_id'] = $product_combination['product_colour_sizes_option_value_colour_id'];
$sizes["product_colour_sizes_option_value_size_id$x"] =$product_combination['product_colour_sizes_option_value_size_id'];
$x++;
} else {
array_push($colours,
array(
$color => $sizes
));
unset($sizes);
$x = 0;
}
}
}
基本上现在，我的第四个（[3]）数组被比较为
$product_combinations[$key+1] == $product_combinations[$key]['product_colour_sizes_name_colours'] $key+1为空值。
我知道如上所述的问题，但是不能想出用我现在的逻辑克服它的好方法，有人能想到解决方案吗？
修改 我试图做的是将行减少到这个确切的数组结构（包括当前未添加的最后一个数组）：
Array
(
[0] => Array
(
[Red] => Array
(
[904] => 16-165
[quantity] => 999
[product_colour_sizes_id] => 37103
[product_colour_sizes_product_id] => 810
[product_colour_sizes_option_value_colour_id] => 61
[product_colour_sizes_option_value_size_id0] => 904
[905] => 17-175
[product_colour_sizes_option_value_size_id1] => 905
[906] => 185-19
[product_colour_sizes_option_value_size_id2] => 906
)
)
)
答案 0 :(得分：1)
您的原始核心逻辑有点不清楚，但根据您的示例输出数据，我相信下面的解决方案应该有效。
关键是真正理解你最终所需的输出，因为只需使用关联数组的魔力就可以消除原始代码所经历的许多逻辑循环。这解决了整个$key+1匹配$key问题 - 由于$key+1逻辑中的固有缺陷以及其他一些问题，它永远不会得到最后一个值。
无论如何，这里有一系列测试值，除了Blue之外还包括Red颜色的额外值;清理了代码：
// Test data array.
$product_combinations = array();
$product_combinations[0][product_colour_sizes_id] = 37105;
$product_combinations[0][product_colour_sizes_product_id] = 810;
$product_combinations[0][product_colour_sizes_option_value_colour_id] = 61;
$product_combinations[0][product_colour_sizes_option_value_size_id] = 904;
$product_combinations[0][quantity] = 999;
$product_combinations[0][product_colour_sizes_name_sizes] = '16-165';
$product_combinations[0][product_colour_sizes_name_colours] = 'Red';
$product_combinations[1][product_colour_sizes_id] = 37104;
$product_combinations[1][product_colour_sizes_product_id] = 810;
$product_combinations[1][product_colour_sizes_option_value_colour_id] = 61;
$product_combinations[1][product_colour_sizes_option_value_size_id] = 905;
$product_combinations[1][quantity] = 999;
$product_combinations[1][product_colour_sizes_name_sizes] = '17-175';
$product_combinations[1][product_colour_sizes_name_colours] = 'Red';
$product_combinations[2][product_colour_sizes_id] = 37103;
$product_combinations[2][product_colour_sizes_product_id] = 810;
$product_combinations[2][product_colour_sizes_option_value_colour_id] = 61;
$product_combinations[2][product_colour_sizes_option_value_size_id] = 906;
$product_combinations[2][quantity] = 999;
$product_combinations[2][product_colour_sizes_name_sizes] = '185-19';
$product_combinations[2][product_colour_sizes_name_colours] = 'Red';
$product_combinations[3][product_colour_sizes_id] = 37102;
$product_combinations[3][product_colour_sizes_product_id] = 810;
$product_combinations[3][product_colour_sizes_option_value_colour_id] = 61;
$product_combinations[3][product_colour_sizes_option_value_size_id] = 907;
$product_combinations[3][quantity] = 999;
$product_combinations[3][product_colour_sizes_name_sizes] = '19.5';
$product_combinations[3][product_colour_sizes_name_colours] = 'Red';
$product_combinations[4][product_colour_sizes_id] = 37102;
$product_combinations[4][product_colour_sizes_product_id] = 810;
$product_combinations[4][product_colour_sizes_option_value_colour_id] = 61;
$product_combinations[4][product_colour_sizes_option_value_size_id] = 907;
$product_combinations[4][quantity] = 999;
$product_combinations[4][product_colour_sizes_name_sizes] = '19.5';
$product_combinations[4][product_colour_sizes_name_colours] = 'Blue';
$product_combinations[5][product_colour_sizes_id] = 37103;
$product_combinations[5][product_colour_sizes_product_id] = 810;
$product_combinations[5][product_colour_sizes_option_value_colour_id] = 61;
$product_combinations[5][product_colour_sizes_option_value_size_id] = 906;
$product_combinations[5][quantity] = 999;
$product_combinations[5][product_colour_sizes_name_sizes] = '185-19';
$product_combinations[5][product_colour_sizes_name_colours] = 'Blue';
以下是基于原始海报代码和代码的重写代码逻辑。期望的输出：
// Init the colours array.
$colours = array();
// Init the sizes array.
$sizes = array();
// Init the increment array.
$increment = array();
// Main logic.
foreach ($product_combinations as $key => $product_combination){
// Set the color & id.
$color = $product_combinations[$key]['product_colour_sizes_name_colours'];
$id = $product_combinations[$key]['product_colour_sizes_option_value_size_id'];
// Set the sizes array data.
$sizes[$color][$id] = $product_combinations[$key]['product_colour_sizes_name_sizes'];
$sizes[$color]['quantity'] = $product_combinations[$key]['quantity'];
$sizes[$color]['product_colour_sizes_id'] = $product_combination['product_colour_sizes_id'];
$sizes[$color]['product_colour_sizes_product_id'] = $product_combination['product_colour_sizes_product_id'];
$sizes[$color]['product_colour_sizes_option_value_colour_id'] = $product_combination['product_colour_sizes_option_value_colour_id'];
$sizes[$color]['product_colour_sizes_option_value_size_id' . $increment[$color]] = $product_combination['product_colour_sizes_option_value_size_id'];
$increment[$color]++;
// Now place the colours array in the sizes array.
$colours[$color] = $sizes[$color];
} // foreach
输出结果如下：
Array
(
[Red] => Array
(
[904] => 16-165
[quantity] => 999
[product_colour_sizes_id] => 37102
[product_colour_sizes_product_id] => 810
[product_colour_sizes_option_value_colour_id] => 61
[product_colour_sizes_option_value_size_id] => 904
[905] => 17-175
[product_colour_sizes_option_value_size_id1] => 905
[906] => 185-19
[product_colour_sizes_option_value_size_id2] => 906
[907] => 19.5
[product_colour_sizes_option_value_size_id3] => 907
)
[Blue] => Array
(
[907] => 19.5
[quantity] => 999
[product_colour_sizes_id] => 37103
[product_colour_sizes_product_id] => 810
[product_colour_sizes_option_value_colour_id] => 61
[product_colour_sizes_option_value_size_id] => 907
[906] => 185-19
[product_colour_sizes_option_value_size_id1] => 906
)
)