php - 如何使用键从数组中删除元素

Question

我有一个数组，里面有其他数组，我想删除具有键“PTemp_C_Avg”的元素

尝试通过创建一个函数来遍历原始数组并消除分配的键(在本例中为 PTemp_C_Avg)。但是，这不会删除特定元素。

//arrProvAvg array
Array
(
[0] => Array
    (
        [PTemp_C_Avg] => 17.28
        [T0_10cm_Avg] => 22.58
        [T1_1m_Avg] => 27.91
        [T2_2m_Avg] => 31.95
        [T3_3m_Avg] => 36.32
        [T4_4m_Avg] => 41.73
        [T5_5m_Avg] => 45.78
        [T6_6m_Avg] => 48.55
        [T7_7m_Avg] => 53.48
        [T7_5_7_5m_Avg] => 47.82
    )

[1] => Array
    (
        [PTemp_C_Avg] => 14.2
        [T0_10cm_Avg] => 20.94
        [T1_1m_Avg] => 27.36
        [T2_2m_Avg] => 32.12
        [T3_3m_Avg] => 36.33
        [T4_4m_Avg] => 41.4
        [T5_5m_Avg] => 46.58
        [T6_6m_Avg] => 48.8
        [T7_7m_Avg] => 52.69
        [T7_5_7_5m_Avg] => 48.9
    )

[2] => Array
    (
        [PTemp_C_Avg] => 11.83
        [T0_10cm_Avg] => 20.23
        [T1_1m_Avg] => 26.9
        [T2_2m_Avg] => 32.39
        [T3_3m_Avg] => 36.95
        [T4_4m_Avg] => 41.48
        [T5_5m_Avg] => 46.41
        [T6_6m_Avg] => 48.82
        [T7_7m_Avg] => 52.58
        [T7_5_7_5m_Avg] => 49.42
    )

)


function eliminaClave($arrOriginal, $key){
    foreach($arrOriginal as $clave => $valor){
        foreach($valor as $c => $v){
            unset($v[$key]);
        }
    }
    return $arrOriginal;
}

//Call the eliminaClave function
$arrPromAvg = eliminaClave($arrPromAvg, "PTemp_C_Avg");

这是我期望的输出

 Array
(
[0] => Array
    (
        [T0_10cm_Avg] => 22.58
        [T1_1m_Avg] => 27.91
        [T2_2m_Avg] => 31.95
        [T3_3m_Avg] => 36.32
        [T4_4m_Avg] => 41.73
        [T5_5m_Avg] => 45.78
        [T6_6m_Avg] => 48.55
        [T7_7m_Avg] => 53.48
        [T7_5_7_5m_Avg] => 47.82
    )

[1] => Array
    (
        [T0_10cm_Avg] => 20.94
        [T1_1m_Avg] => 27.36
        [T2_2m_Avg] => 32.12
        [T3_3m_Avg] => 36.33
        [T4_4m_Avg] => 41.4
        [T5_5m_Avg] => 46.58
        [T6_6m_Avg] => 48.8
        [T7_7m_Avg] => 52.69
        [T7_5_7_5m_Avg] => 48.9
    )

[2] => Array
    (
        [T0_10cm_Avg] => 20.23
        [T1_1m_Avg] => 26.9
        [T2_2m_Avg] => 32.39
        [T3_3m_Avg] => 36.95
        [T4_4m_Avg] => 41.48
        [T5_5m_Avg] => 46.41
        [T6_6m_Avg] => 48.82
        [T7_7m_Avg] => 52.58
        [T7_5_7_5m_Avg] => 49.42
    )

)

带有“PTemp_C_Avg”的元素已被删除

Answer 1

使用单个 foreach() 和 unset() 怎么样？

function eliminaClave($arrOriginal, $key){
    foreach($arrOriginal as $clave => $valor){
        unset($valor['PTemp_C_Avg']);
        $arrOriginal[$clave] = $valor;  
    }
    return $arrOriginal;
}