Laravel- How to Remove a key from collection? - laravel

Question

I have data as below:
[
{
"id": "3",
"title": "Boruto's Photo",
"is_lottery": 1,
"price": 10
},
{
"id": "4",
"title": "Misuki's Photo",
"is_lottery": 0,
"price": 20
}
]
I want to filter which is is_lottery == false remove the price key from this collection. The output is:
[
{
"id": "3",
"title": "Boruto's Photo",
"is_lottery": 1,
"price": 10
},
{
"id": "4",
"title": "Misuki's Photo",
"is_lottery": 0,
}
]

Answer 1

You can do this
$json = '[
{
"id": "3",
"title": "Boruto\'s Photo",
"is_lottery": 1,
"price": 10
},
{
"id": "3",
"title": "Misuki\'s Photo",
"is_lottery": 0,
"price": 20
}
]';
$filtered = collect(json_decode($json, true))->map(function ($array) {
if (!$array['is_lottery']) {
unset($array['price']);
}
return $array;
});
For native PHP you can do
$data = json_decode($json, true);
foreach ($data as $index => $array) {
if (!$array['is_lottery']) {
unset($array['price']);
}
$data[$index] = $array;
}

Answer 2

$json = [
{
"id": "3",
"title": "Boruto's Photo",
"is_lottery": 1,
"price": 10
},
{
"id": "4",
"title": "Misuki's Photo",
"is_lottery": 0,
"price": 20
}
];
$filtered = collect(json_decode($json))->map(function($value, $key) {
if (!$value['is_lottery']) {
Arr::except($value, 'price');
}
return $value;
});

Answer 3

you can declare new variable called $newCollection as final collection. Use foreach() to iterate your collection then delete the is_lottery from collection by using unset() then push it to $newCollection, this is example how you can delete it using foreach:
$newCollection = [];
foreach ($photos as $key => $value) {
if ($value["is_lottery"] == 0) {
unset($value["price"]);
}
array_push($newCollection,$value);
}
or you can try using forget to remove it from collection (not tested) from this ref:
How to unset (remove) a collection element after fetching it?