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使用php动态多维数组值计数

for-loop codeigniter arrays php

Prashanth · 技术社区 · 7 年前

我正在尝试为以下数组值计算多维数组中的数组值。

$allMultiGridRes = Array
(
    [0] => Array
        (
            [1] => Array
                (
                    [1] => grid multi col1
                    [2] => grid multi col2
                )
            [2] => Array
                (
                    [1] => grid multi col1
                )
        )
    [1] => Array
        (
            [1] => Array
                (
                    [1] => grid multi col1
                    [2] => grid multi col2
                )
            [2] => Array
                (
                    [1] => grid multi col1
                    [2] => grid multi col2
                )
        )
    [2] => Array
        (
            [1] => Array
                (
                    [1] => grid multi col1
                    [2] => grid multi col2
                )
            [2] => Array
                (
                    [1] => grid multi col1
                    [2] => grid multi col2
                )
        )
)

我期待以下输出。

Array
(
    [1] => Array
        (
            [grid multi col1] => 3
            [grid multi col2] => 3
        )
    [2] => Array
        (
            [grid multi col1] => 3
            [grid multi col2] => 2
        )
)

我使用 for loop 但我无法实现上述输出。

$allMultiGridRes =array();
$paramCheck =array();
foreach ($allMultiGridRes as $gMKey => $GMvalue){
    if(!empty($GMvalue)){
        foreach ($GMvalue as $gMKey2 => $gMValue2){
            if(!empty($gMValue2)){
                $allGridCount[$gMKey2] = array_count_values($gMValue2);
                foreach ($gMValue2 as $gMKey3 => $gMValue3){
                    $paramCheck = !empty($allGridCount[$gMKey2])?$allGridCount[$gMKey2]:array();
                    $GMindex1 = $gMValue3;
                    $allGridCount[$gMKey2][$GMindex1] = array_key_exists($GMindex1,$paramCheck) ? $allGridCount[$gMKey2][$GMindex1]++ : 1;
                    }
                }
            }
        }
    }
}

使用此方法,我得到以下输出,但值没有按预期计数。

Array
(
    [1] => Array
        (
            [grid multi col1] => 1
            [grid multi col2] => 1
        )
    [2] => Array
        (
            [grid multi col1] => 1
            [grid multi col2] => 1
        )
)

我愿意接受建议,我也尝试了很多方法,但仍然无法实现。我被困在这里很久了

提前谢谢。

2 回复 | 直到 7 年前

Eddie 7 年前

你可以用 array_reduce 和 foreach

$allMultiGridRes = ;//Your array

$result = array_reduce($allMultiGridRes, function($c, $v){
    foreach ( $v as $key => $value ) {
        if ( !isset( $c[$key] ) ) $c[$key] = array();

        foreach( $value as $o ) {
            if ( !isset( $c[$key][$o] ) ) $c[$key][$o] = 0;
            $c[$key][$o]++;
        }
    }
    return $c;
},array());

print_r( $result );

这将导致:

Array
(
    [1] => Array
        (
            [grid multi col1] => 3
            [grid multi col2] => 3
        )

    [2] => Array
        (
            [grid multi col1] => 3
            [grid multi col2] => 2
        )

)

Death-is-the-real-truth 7 年前

您需要使用second foreach() 迭代 key 区分记录以及适当添加

$allGridCount = [];
foreach ($allMultigridRes as $gMKey => $GMvalue){
    if(!empty($GMvalue)){
        foreach ($GMvalue as $gMKey2 => $gMValue2){
            if(!empty($gMValue2)){
                foreach ($gMValue2 as $gMKey3 => $gMValue3){
                    $allGridCount[$gMKey2][$gMKey3][$gMValue3] = (isset($allGridCount[$gMKey2][$gMKey3][$gMValue3])) ? $allGridCount[$gMKey2][$gMKey3][$gMValue3]+1 : 1;
                }
            }
        }
    }
}
echo "<pre/>";print_r($allGridCount);

输出:- https://eval.in/1004977

注:- 而不是 !empty() 使用 is_array() && count() 检查它是否是一个数组,并在其中包含一些值以迭代furhter

$allGridCount = [];
foreach ($allMultigridRes as $GMvalue){
    if(is_array($GMvalue) && count($GMvalue) >0){
        foreach ($GMvalue as $gMKey2 => $gMValue2){
            if(is_array($gMValue2) && count($gMValue2) >0){
                foreach ($gMValue2 as $gMKey3 => $gMValue3){
                    $allGridCount[$gMKey2][$gMKey3][$gMValue3] = (isset($allGridCount[$gMKey2][$gMKey3][$gMValue3])) ? $allGridCount[$gMKey2][$gMKey3][$gMValue3]+1 : 1;
                }
            }
        }
    }
}
echo "<pre/>";print_r($allGridCount);