PHP搜索多维数组以获取值&获得相应的元素值 [英] PHP Search multidimensional array for value & get corresponding element value

问题描述

我正在使用PHP&我有一个多维数组，需要搜索它才能查看键"的值是否存在，如果确实存在，则可以获取字段"的值.这是我的数组:

I am using PHP & I have a multi dimensional array which I need to search to see if the value of a "key" exists and if it does then get the value of the "field". Here's my array:

Array
(
    [0] => Array
    (
        [key] => 31
        [field] => CONSTRUCTN
        [value] => LFD_CONSTRUCTION_2
    )
    [1] => Array
    (
        [key] => 32
        [field] => COOLING
        value] => LFD_COOLING_1
    )
)

我希望能够在数组中搜索键"值31.如果存在，那么我希望能够提取"CONSTRUCTN"的相应字段"值.

I want to be able to search the array for the "key" value of 31. If it exists, then I want to be able to extract the corresponding "field" value of "CONSTRUCTN".

我尝试使用array_search(31，$ myArray)，但是它不起作用...

I've tried using array_search(31, $myArray) but it does not work...

推荐答案

function searchMultiArray($val, $array) {
  foreach ($array as $element) {
    if ($element['key'] == $val) {
      return $element['field'];
    }
  }
  return null;
}

然后:

searchMultiArray(31, $myArray);

应返回"CONSTRUCTN".

Should return "CONSTRUCTN".

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