通过另一个键和值在多维数组中查找值 - Find value in multidimensional array by another key and value

Find value in multidimensional array by another key and value

我有以下数组：

$array = array(
   'item-img-list' => array(
      array(
         'image-type' => 1,
         'image-url' => 'http://img07.allegroimg.pl/...'
      ),
      array(
         'image-type' => 2,
         'image-url' => 'http://img07.allegroimg.pl/...'
      ),
      array(
         'image-type' => 3,
         'image-url' => 'http://img07.allegroimg.pl/...'
      )
   )
)

如何获取第一个"图像网址"值，其中"图像类型"= "2"？我正在尝试通过此代码执行此操作，但没有任何内容：

$zdjecia = $item['item-img-list'];
foreach($zdjecia as $zdjecie) {
   foreach($zdjecie as $key=>$value) {
      if($key == "image-type" && $value == "2") {
         $zdjecie_aukcji = $key['image-url'];
      }
   }
}

感谢您的任何帮助！

工程！

$searchKey = 2;
foreach($zdjecia as $zdjecie) {
    if (**$zdjecie->{'image-type'}** == $searchKey){
        $zdjecie_aukcji = **$zdjecie->{'image-url'}**;
        break;
    }
}

$zdjecia = $item['item-img-list'];
$searchKey = 2;
foreach($zdjecia as $zdjecie) {
    if ($zdjecie['image-type'] == $searchKey)
        $zdjecie_aukcji = $zdjecie['image-url'];
        break;
    }
}

或（PHP>=5.5）

$zdjecia = $item['item-img-list'];
$searchKey = 2;
$results = array_column(
    $zdjecia,
    'image-url',
    'image-type'
);
$zdjecie_aukcji = $results[$searchKey];

foreach($zdjecia as $zdjecie) {
   foreach($zdjecie as $key=>$value) {
      if($key == "image-type" && $value == "2") {
         $zdjecie_aukcji = $zdjecie['image-url'];
      }
   }
}

一个带有自定义函数的建议，我用于我的项目在多维数组中按键查找值：

function array_search_multi($array, $key, $value)
{
    $results = array();
    if (is_array($array))
    {
        if (isset($array[$key]) && $array[$key] == $value)
            $results[] = $array; 
        foreach ($array as $subarray)
            $results = array_merge($results, array_search_multi($subarray, $key, $value));
    }
    return $results;
}

用法：

$results = array_search_multi($array, 'image-type', '2');
echo $results[0]['image-url'];

输出：

http://img07.allegroimg.pl/...

工作示例

为什么不简单地这样：-

    $array = array(
       'item-img-list' => array(
          array(
             'image-type' => 1,
             'image-url' => 'http://img07.allegroimg.pl/...'
          ),
          array(
             'image-type' => 2,
             'image-url' => 'http://img07.allegroimg.pl/...'
          ),
          array(
             'image-type' => 3,
             'image-url' => 'http://img07.allegroimg.pl/...'
          )
       )
    );
    $newArray = array();
    foreach($array['item-img-list'] as $k=>$v){
      $newArray[$v['image-type']] = $v['image-url'];
    }

输出：-

     Array
    (
        [1] => http://img07.allegroimg.pl/...
        [2] => http://img07.allegroimg.pl/...
        [3] => http://img07.allegroimg.pl/...
    )

或

    echo $newArray[2];

您也可以像这样检查密钥：

 if (array_key_exists(2, $newArray)) {
   // Do whatever you want
 }

工作演示

在后面添加break;

$zdjecie_aukcji = $key['image-url'];

修改为：

$zdjecia = $array['item-img-list'];
foreach($zdjecia as $zdjecie) {
  if($zdjecie['image-type'] == '2') {
     $zdjecie_aukcji = $zdjecie['image-url'];
  }
}