我有一个具有以下格式的多维数组。我正在尝试打印半径最大的数组。该函数应返回最大半径的详细信息。例如，对于Davis，它应返回半径为106（具有最大半径）的第二个内部数组，对于john，应返回半径为50的第二个内部数组。
我尝试使用此link中提供的解决方案。
Array
(
[0] => Array
(
[name] => davis
[data] => Array
(
[0] => Array
(
[xaxis] => 445
[yaxis] => 447
[radius] => 80
)
[1] => Array
(
[xaxis] => 468
[yaxis] => 447
[radius] => 77
)
[2] => Array
(
[xaxis] => 409
[yaxis] => 199
[radius] => 106
)
)
)
[1] => Array
(
[name] => john
[data] => Array
(
[0] => Array
(
[xaxis] => 311
[yaxis] => 383
[radius] => 50
)
[1] => Array
(
[xaxis] => 527
[yaxis] => 310
[radius] => 21
)
[2] => Array
(
[xaxis] => 465
[yaxis] => 431
[radius] => 48
)
[3] => Array
(
[xaxis] => 339
[yaxis] => 326
[radius] => 43
)
)
)
)
答案 0 :(得分：2)
代码段，我认为半径是唯一的，否则它将重叠
$result = [];
foreach ($arr as $key => $value) {
// it will map radius as key and whole array as its value
$temp = array_column($value['data'], null, 'radius');
// I am fetching max key by which I will fetch data in next step
$key = max(array_keys($temp));
// fetching data of max value and saving it for the name
$result[$value['name']] = $temp[$key];
}
print_r($result);die;
Demo。
如果您想保持数组结构原样，
$result = [];
$i = 0;
foreach ($arr as $key => $value) {
$temp = array_column($value['data'], null, 'radius');
$key = max(array_keys($temp));
$result[$i]['name'] = $value['name'];
$result[$i]['data'] = $temp[$key];
$i++;
}
print_r($result);die;
Demo。