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如何制造从使用这种双层阵列分离的 com?
原标题:How to create comma separated string from using this kind of a two dimensional array?

我有两个方面。

$FrstArr = Array(
    [0]= array(
                [0]=>101,
                [1]=>ename1,
                [2]=>1110
            ),

    [1]= array(
                [0]=>102,
                [1]=>ename2,
                [2]=>1111
            ),

    [2]= array(
                [0]=>103,
                [1]=>ename3,
                [2]=>1112
             )
)

从这个阵列 我需要创建像这种单一层面阵列。

$secondArr = array([0]=>1110,[1]=>1111,[2]=>1112);

With out using any loops how can I create $secondArr array using $FrstArr multidimensional array? Any php built in functionality is available for that?

最佳回答
$secondArr = array_map(function ($i) { return $i[2]; }, $FrstArr);

这 lo,但幕后。

问题回答
$secondArr = array_map(
  function ($item) { return $item[2]; },
  $firstArr
);

值得一提的是,这也(通常)将超越阵列。





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