如果addon_id key不存在，如何从多维数组中删除

Question

在此之前，我已经自己解决了所有的问题。到目前为止，我得到了这个工作点，我能够正确地保存数据。我唯一的问题是，我如何删除数组addon_id不存在?

我想删除最后两个"addon_price">

[
{"addon_id":"7","addon_price":"12"},
{"addon_id":"8","addon_price":"45"},
{"addon_id":"9","addon_price":"66"},
{"addon_price":null}, <- remove
{"addon_price":null} <- remove
]

这是我的代码

$p = ItemsAddon::where('item_id', $request->item_id)->pluck('addon_id');

if($request->addon_id) {

$addons = [
'addon_id' => $request->addon_id,
'addon_price' => $request->addon_price
];


$values = [];
foreach($addons as $key => $addon) {

foreach($addon as $subkey => $subvalue) {

$values[$subkey][$key] = $subvalue;

}

}

foreach($values as $vkey => $value) {

$item_addon = new ItemsAddon;

if(!$p->contains($value['addon_id'])) {

$item_addon->item_id = $request->item_id;
$item_addon->addon_id =  $value['addon_id'];
$item_addon->addon_price = $value['addon_price'];

$item_addon->save();

} else {

$item_addon->where(
[
'item_id' => $request->item_id,
'addon_id' => $value['addon_id'],
])->update([
'addon_id' => $value['addon_id'],
'addon_price' => $value['addon_price'],
]);

}

}

}

Answer 1

如果你有一个像这样的数组

$a = [
["addon_id" => "7", "addon_price" => "12"],
["addon_id" => "8", "addon_price" => "45"],
["addon_id" => "9", "addon_price" => "66"],
["addon_price" => null],
["addon_price" => null]
];

则可以这样过滤空值:

$b = collect($a)->filter(function ($r) {
return isset($r["addon_id"]);
})->toArray();