假設我有一個如下所示的陣列：
$array = [
0 => [
"label" => "Radiator",
"details" => 0 => [
"label" => "Condition",
"value" => "New",
],
1 => [
"label" => "Type",
"value" => "Wall",
],
],
1 => [
"label" => "Airco",
"details" => 0 => [
"label" => "Condition",
"value" => "New",
],
1 => [
"label" => "Type",
"value" => "",
],
],
2 => [
"label" => "Refrigerator",
"details" => 0 => [
"label" => "Condition",
"value" => "Bad",
],
1 => [
"label" => "Type",
"value" => "Wall",
],
],
];
我想過濾這個數組，所以它只包含值不為空的詳細資訊。 Airco 的 type 值為空，因此它不應傳回詳細的 type。在這種情況下，傳回的陣列應如下所示：
$array = [
0 => [
"label" => "Radiator",
"details" => 0 => [
"label" => "Condition",
"value" => "New",
],
1 => [
"label" => "Type",
"value" => "Wall",
],
],
1 => [
"label" => "Airco",
"details" => 0 => [
"label" => "Condition",
"value" => "New",
],
],
2 => [
"label" => "Refrigerator",
"details" => 0 => [
"label" => "Condition",
"value" => "Bad",
],
1 => [
"label" => "Type",
"value" => "Wall",
],
],
];
我知道我可以使用以下程式碼（如此處找到的）基於空列過濾數組：
$result = array_filter($array, function($o) use($column) {
return trim( $o[$column] ) !== '' && $o[$column] !== null;
});
但是由於我有一個巢狀數組details，我不太確定如何調整此程式碼以使其適合我的情況。
P粉4587250402023-09-09 09:24:13
您的array_filter僅在第一層運作。您也希望在 details 陣列上進行循環，您可以使用簡單的 foreach 循環來完成此操作。外部循環將遍歷所有行，內部循環將遍歷每行的詳細資訊。
<?php
foreach($array as &$row){
foreach($row['details'] as $key => $record){
if(strlen($record['value']) == 0){
unset($row['details'][$key]);
}
}
}