PHP

Question

我有一个多维关联数组，我使用两个 foreach 来迭代它们，我需要从原始数组更改一个值，这里是我的代码的表示和我尝试过的内容：

$array = [
  ['id' => 1, 'customers' => [['customerName' => 'Daniel', 'age' => 20, 'isYoung' => false], ['customerName' => 'Patrick', 'age' => 56, 'isYoung' => false]]],
  ['id' => 4, 'customers' => [['customerName' => 'Paul', 'age' => 41, 'isYoung' => false]]]
];

foreach($array as $key => $value) {
  foreach($value['customers'] as $sKey => $sValue {
    if($sValue['age'] < 35) {
      $array[$key]['customers'][$sKey]['isYoung'] = true; //Doesnt Work
      $value['customers'][$sKey]['isYoung'] = true; //Doesnt Work
    }
  }
}

有线索吗？

Answer 1

第一个作业适合我。但是你可以通过使用迭代变量的引用变量来简化它。

foreach($array as &$value) {
  foreach($value['customers'] as &$sValue) {
    if($sValue['age'] < 35) {
      $sValue['isYoung'] = true;
    }
  }
}

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