我有以下數(shù)組$priceYear = Array ( [AZ] => Array ( [1] => 2020 [2] => 2020 ) [BY] => Array ( [0] => 2020 [1] => 2020 ) [CX] => Array ( [1] => 2020 [2] => 2020 [3] => 2020 ) [DW] => Array ( [106] => 2019 [107] => 2019 [108] => 2019 ) ) 還有另一個數(shù)組$array = Array ( [0] => Array ( [YEAR] => 2018 [VALUE_AMDON] => 55 ) [1] => Array ( [YEAR] => 2019 [VALUE_AMDON] => 57 ) [2] => Array ( [YEAR] => 2020 [VALUE_AMDON] => 59 ) ) 如果 $priceYear == YEAR 中的值我想替換為 VALUE_AMDON所以輸出應該是這樣的$priceYear = Array ( [AZ] => Array ( [1] => 59 [2] => 59 ) [BY] => Array ( [0] => 59 [1] => 59 ) [CX] => Array ( [1] => 59 [2] => 59 [3] => 59 ) [DW] => Array ( [106] => 57 [107] => 57 [108] => 57 ) ) 但不幸的是它不起作用，它返回初始數(shù)組如果有人可以幫助我，看起來這個錯誤非常愚蠢，但我沒有看到它：c
2 回答
紫衣仙女
TA貢獻1839條經(jīng)驗 獲得超15個贊
您還可以使用數(shù)組函數(shù)（例如 array_column 和 array_search 檢查如下）來完成此操作：
$array_year = array_column($array, "YEAR");
foreach($priceYear as $key => $val){
foreach($val as $innerkey => $innerval){
// Below If year exist in $array_year function return key of $array_year else return false
$isExistKey = array_search($innerval, $array_year);
if($isExistKey !== FALSE){
$priceYear[ $key ][ $innerkey ] = $array[ $isExistKey ]["VALUE_AMDON"];
}
}
}
echo "<pre>";
print_r($priceYear);
在此處檢查輸出：https://paiza.io/projects/gUNihGow6-CWO0eqWpEtxg ?language=php
楊__羊羊
TA貢獻1943條經(jīng)驗 獲得超7個贊
由于數(shù)組的鍵之間沒有直接鏈接，因此最簡單的方法是使用嵌套循環(huán)。
您只需要循環(huán)遍歷$priceYear數(shù)組并檢查每個“年份”值和YEAR中的值$array。如果它們匹配，您可以僅替換$priceYear數(shù)組中的該值。
下面的代碼帶有注釋，可以告訴您每一行的作用：
// 1. loop through the nested arrays in $priceYear
foreach ($priceYear as $key => $price_years_array) {
foreach ($price_years_array as $index => $price_years_value) {
// 2. Create a variable to store the new value for the year in this $priceYear array,
// initialised to 0 (your specified default)
$new_year = 0;
// 3. check each year in your $array
foreach ($array as $replacement_values){
// 4. if $replacement_values has a YEAR and VALUE_AMDON...
// and $price_years_value matches the value in YEAR...
if( $replacement_values['YEAR'] && $replacement_values['VALUE_AMDON']
&& $replacement_values['YEAR'] == $price_years_value){
// 5. store this in our $new_year variable
$new_year = $replacement_values['VALUE_AMDON'];
}
}
// 6. after checking all years in $array, it we found a match it will be in $new_year
// otherwise it will still be 0.
// Now simple set this value - we can access this directly using $key and $index
$priceYear[$key][$index] = $new_year;
}
}
var_dump($priceYear);
使用不存在的年份的示例數(shù)據(jù)：
$priceYear = array(
'AZ' => array( 1 => 2021, 2 => 2020), // <-- 2021 doesn't exist in $array
'BY' => array( 0 => 2020, 1 => 2016), // <-- 2016 doesn't exist in $array
'CX' => array(1 => 2020, 2 => 2020, 3 => 2020),
'DW' => array(106 => 2019, 107 => 2019, 108 => 2019)
);
$array = array(
array('YEAR' => 2018, 'VALUE_AMDON' => 55),
array('YEAR' => 2019, 'VALUE_AMDON' => 57),
array('YEAR' => 2020, 'VALUE_AMDON' => 59)
);
輸出：
Array
(
[AZ] => Array
(
[1] => 0 // <-- value is 0 because year didn't exist in $array
[2] => 59
)
[BY] => Array
(
[0] => 59
[1] => 0 // <-- value is 0 because year didn't exist in $array
)
[CX] => Array
(
[1] => 59
[2] => 59
[3] => 59
)
[DW] => Array
(
[106] => 57
[107] => 57
[108] => 57
)
)
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