假设我有一个如下所示的数组：
$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",
],
],
];
我想过滤这个数组，所以它只包含值不为空的详细信息。 Airco 的 type 值为空，因此它不应返回详细的 type。在这种情况下，返回的数组应如下所示：
$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代码（如此处找到的）基于空列过滤数组：
$result = array_filter($array, function($o) use($column) {
return trim( $o[$column] ) !== '' && $o[$column] !== null;
});
但是由于我有一个嵌套数组details，我不太确定如何调整此代码以使其适合我的情况。
P粉4587250402023-09-09 09:24:13
您的array_filter仅在第一级起作用。您还希望在 details 数组上进行循环，您可以使用简单的 foreach 循环来完成此操作。外部循环将遍历所有行，内部循环将遍历每行的详细信息。
<?php
foreach($array as &$row){
foreach($row['details'] as $key => $record){
if(strlen($record['value']) == 0){
unset($row['details'][$key]);
}
}
}