从动态生成键的多维数组中提取值 [英] Extracting values from multidimensional array where keys are dynamically generated

问题描述

我有一个数组

$array1 = Array (
       [a1] => Array  (
               [a_name] => aaaaa
               [a_value] => aaa
             )

       [b1] => Array (
               [b_name] => bbbbb
               [b_value] => bbb
           )
       [c1] => Array (
               [c_name] => ccccc
               [c_value] => ccc
           )

     )

现在，我要提取$ array1 [b1] [b_name]的值.但是这里的事情是密钥(b1和b_name)将动态生成.这里的情况是我有一个多维数组，并且我想要键的值.那么我该如何获得价值.

Now I want to extract the value of $array1[b1][b_name]. But the thing here is the keys (b1 and b_name) will be generated dynamically. The situation here is I have a multidimensional array and the keys of which i want the value. So how do i get the value.

例如

$array1[b1][b_name] 

应该返回

bbbbb

和

$array1[c1] 

应该返回

array([c_name]=>ccccc
       [c_value]=>ccc
   ) 

以此类推...

编辑

让我们保持这种方式，第二个数组是

Lets keep it this way, The second array is

$array2 = Array (
         [b1] => Array (
               [b_name]=> zzzzz
             )
      )

现在与$ array1和$ array2相交，我想要$ array1的值，即.bbbbb

Now Intersecting $array1 and $array2, I want the value of the $array1 ie. bbbbb

推荐答案

尝试一下

<?php
   //you will have $firstkey and $secondkey as index values of $array1
   if (isset($firstkey) && array_key_exists($firstkey, $array1)) {
       if (isset($secondkey) && array_key_exists($secondkey, $array1[$firstkey])) {
           print_r($array1[$firstkey][$secondkey]);
       }
       else {
           print_r($array1[$firstkey]);
           echo "$secondkey does not exist";           
       }
   }
   else {
       echo "$firstkey does not exist";
   }
?>

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