多维数组 - 搜索值并获取子数组

问题描述：

给定一个数组

$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)并取回其集群?即搜索 202 并且响应是clusterb"；我尝试使用 array_search 但它似乎只适用于单维数组，对吗?(即抱怨第二个参数是错误的数据类型，如果我给它 $clusters)

How can I search for a server (e.g. 202) and get back its cluster? i.e. search for 202 and the response is "clusterb" I tried using array_search but it seems that is only for monodimensional arrays right? (i.e. complains that second argument is the wrong datatype if I give it $clusters)

答

$search=202;

$cluster=false;

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

echo $cluster;

多维数组 - 搜索值并获取子数组

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