doujiunai2169 2014-10-06 17:41
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在PHP中组合和添加数组值

I have an array structured like this:

Array
(
    [0] => Array
        (
            [0] => cmi.interactions.0.result
            [1] => 1
            [2] => 0
        )

    [1] => Array
        (
            [0] => cmi.interactions.0.result
            [1] => 0
            [2] => 1
        )

    [2] => Array
        (
            [0] => cmi.interactions.0.result
            [1] => 0
            [2] => 1
        )

    [3] => Array
        (
            [0] => cmi.interactions.1.result
            [1] => 1
            [2] => 0
        )

    [4] => Array
        (
            [0] => cmi.interactions.1.result
            [1] => 1
            [2] => 0
        )

    [5] => Array
        (
            [0] => cmi.interactions.1.result
            [1] => 1
            [2] => 0
        )
)

What I would like is the following:

Array
(
    [0] => Array
        (
            [0] => cmi.interactions.0.result
            [1] => 1
            [2] => 2
        )

    [1] => Array
        (
            [0] => cmi.interactions.1.result
            [1] => 3
            [2] => 0
        )
)

Basically I want to know how to find where the first value in each subarray match and add the second and third value accordingly?

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3条回答 默认 最新

  • douwen7475 2014-10-06 17:45
    关注

    Something like this, did not check it

    $out = array();
    foreach($arr as $el)
      if (!isset($out[$el[0]]))
         $out[$el[0]] = $el;
      else
         for($i = 1; $i < count($el); $i++)
            $out[$el[0]][$i] += $el[$i];
    

    You can remove keys after that, like $out = array_values($out);

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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