寻找在关联数组最高价值 [英] Finding Highest Value in Associative Array

问题描述

有一个比较简单的方法来找到自己的关联数组每个按键的最高价值？

 阵列（    0 =＆GT;阵列（
        avgtime=＆GT; 19.75，
        反弹=＆GT; 3，
        浏览量=＆GT; 14，
        游客=＆GT; 4
    ）    1 =＆GT;阵列（
        avgtime=＆GT; 1.125，
        反弹=＆GT; 7，
        浏览量=＆GT; 9，
        游客=＆GT; 8
    ）    2 =＆GT;阵列（
        avgtime=＆GT; 111，
        反弹=＆GT; 18，
        浏览量=＆GT; 32，
        游客=＆GT; 20
    ）    3 =＆GT;阵列（
        avgtime=＆GT; 6.9375，
        反弹=＆GT; 14，
        浏览量=＆GT; 18，
        游客=＆GT; 10
    ）    4 =＆GT;阵列（
        avgtime=＆GT; 191，
        反弹=＆GT; 11，
        浏览量=＆GT; 57，
        游客=＆GT; 24
    ）
）;
 

我要创建一个数组保存每个键的最高值，因此最终结果将是。

 阵列（    avgtime=＆GT; 191，
    反弹=＆GT; 18，
    浏览量=＆GT; 57，
    游客=＆GT; 24
）;
 

解决方案

遍历数组，并存储最大值为每个键

  $ TEMP =阵列（）;
的foreach（$为$项数据）{
    的foreach（$项目作为重点$ = GT; $值）{
        $临时[$关键] = MAX（
                使用isset（$临时[$关键]）？ $临时[$关键]：$值，
                $值）;
    }
}
 

Is there a relatively easy way to find the highest values for each of the keys in my associative arrays?

Array(

    0 => Array(
        "avgtime"   => 19.75,
        "bounces"   => 3,
        "pageviews" => 14,
        "visitors"  => 4
    )

    1 => Array(
        "avgtime"   => 1.125,
        "bounces"   => 7,
        "pageviews" => 9,
        "visitors"  => 8
    )

    2 => Array(
        "avgtime"   => 111,
        "bounces"   => 18,
        "pageviews" => 32,
        "visitors"  => 20
    )

    3 => Array(
        "avgtime"   => 6.9375,
        "bounces"   => 14,
        "pageviews" => 18,
        "visitors"  => 10   
    )

    4 => Array(
        "avgtime"   => 191,
        "bounces"   => 11,
        "pageviews" => 57,
        "visitors"  => 24
    )
);

I want to create one array that holds the highest value for each key so the end result would be.

Array(

    "avgtime"   => 191,
    "bounces"   => 18,
    "pageviews" => 57,
    "visitors"  => 24
);

解决方案

Iterate over the Array and store the max values for each key

$temp = array();
foreach ($data as $item) {
    foreach ($item as $key => $value) {
        $temp[$key] = max(
                isset($temp[$key]) ? $temp[$key] : $value,
                $value);
    }
}

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