假设我有一个多维数组:
Array
(
[0] => Array
(
[7,14] => 0.0,3.0
[5,11] => 0.0,5.0
[8,6] => 0.0,6.0
)
[1] => Array
(
[7,14] => 0.0,1.0
[5,11] => 1.0,3.0
[11,13] => 1.0,1.0
[6,8] => 1.0,0.0
)
我想形成一个新数组,其中键作为每个数组中所有键的并集,值是这些联合键的对应值。如果只在一个子数组中找到某个键,则用逗号填充将要数据
即结果----------
Array
(
[7,14] => 0.0,3.0,0.0,1.0 // <--- union 0.0,3.0 and 0.0,1.0
[5,11] => 0.0,5.0,1.0,3.0
[8,6] => 0.0,6.0,,
[11,3] => 1,0,1.0,,
[6,8] => 1.0,0.0,,
)
这是我尝试过的。我非常接近正确答案!
function combineValues($bigArray){
$combinedArray = array();
for($i = 0; $i < (count($bigArray) - 1); $i++) {
$keys = array_keys($bigArray[$i]);
for($j = 0; $j < count($keys); $j++){
$currentKey = $keys[$j];
if (isset($bigArray[$i+1][$currentKey]){
$combinedArray[$currentKey] = $bigArray[$i][$currentKey] + "," + $bigArray[$i+1][$currentKey];
} else {
}
}
}
return $combinedArray;
}
答案 0 :(得分:2)
$array2 = [[1, 2, 3, 4], [2 => 7, 8, 9]];
$return_array = array();
foreach ($array2 as $array1)
{
foreach ($array1 as $key => $value)
{
if (isset($return_array[$key]))
$return_array[$key].=',' . $value;
else
$return_array[$key] = $value;
}
}
var_dump($return_array);
您也可以使用语言的功能特性。 array_walk_recursive
$array2 = [[1, 2, 3, 4], [2 => 7, 8, 9]];
$return_array = array();
array_walk_recursive($array2, function ($value, $key)use(&$return_array)
{
if (isset($return_array[$key]))
$return_array[$key].=',' . $value;
else
$return_array[$key] = $value;
});
var_dump($return_array);