PHP多维数组 - 搜索值并获取子数组

Question

给出类似

的数组

$clusters = array(
"clustera" => array(
    '101',
    '102',
    '103',
    '104'
),
"clusterb" => array(
    '201',
    '202',
    '203',
    '204'
),
"clusterc" => array(
    '301',
    '302',
    '303',
    '304'
)
);

如何搜索服务器（例如202）并获取其群集？即搜索202并且响应是“clusterb”我尝试使用array_search但似乎只适用于单维数组吗？ （即如果我给它$ clusters，则抱怨第二个参数是错误的dataype）

非常感谢！

Answer 1

$search=202;

$cluster=false;

foreach ($clusters as $n=>$c)
  if (in_array($search, $c)) {
    $cluster=$n;
    break;
  }

echo $cluster;

Answer 2

function array_multi_search($needle,$haystack){
foreach($haystack as $key=>$data){

if(in_array($needle,$data))
return $key;
}
}
$key=array_multi_search(202,$clusters);
echo $key;
$array=$clusters[$key];

尝试使用此功能。它返回$ haystack（cluster）的直接子数组中$ needle（202）的键。没有经过测试，请告诉我这是否有效

Answer 3

$arrIt = new RecursiveArrayIterator($cluster);
$server = 202;

foreach ($arrIt as $sub){
    if (in_array($server,$sub)){
        $clusterSubArr = $sub;
        break;
        }
    }

$clusterX = array_search($clusterSubArr, $cluster);

Answer 4

function getCluster($val) {
   foreach($clusters as $cluster_name => $cluster) {
      if(in_array($val, $cluster)) return $cluster_name;
   }
   return false;
}