How to get the common values from 2 Laravel collections - laravel

Question

I have 2 Collections in Laravel, and I want only common values in my $result object. I see that $collection->intersect() works only for 1D array.
Below are the collections
Collection {#1086 ▼
#items: array:5 [▼
0 => {#1115 ▼
+"name": "Light"
+"class": "ABC"
+"id": 4
}
1 => {#1113 ▼
+"name": "Milo"
+"class": "XYZ"
+"id": 10
}
2 => {#1120 ▼
+"name": "Milo Test"
+"class": "ABC"
+"id": 12
}
3 => {#1102 ▼
+"name": "KMSMiloCow"
+"class": "ABC"
+"id": 16
}
4 => {#1106 ▼
+"name": "MiloCows"
+"class": "XYZ"
+"id": 18
}
]
}
Collection {#1086 ▼
#items: array:5 [▼
0 => {#1115 ▼
+"name": "Light"
+"class_name": "ABC"
+"id": 4
}
]
}
Now in my result, I just need this
Collection {#1086 ▼
#items: array:5 [▼
0 => {#1115 ▼
+"name": "Light"
+"class": "ABC"
+"id": 4
}
]
}

Answer 1

I have no idea this would help you or not but these will be useful
$common_collection = $collection_1->whereIn('id', $collection_2->pluck('id')->toArray())
->unique('id')
->sortBy('id');

Answer 2

To get a collection with common elements, you can use filter():
The filter method filters the collection using the given callback, keeping only those items that pass a given truth test
$commonCollection = $collection1->filter(function ($value, $key) use ($collection2){
return $collection2->contains($value);
});

Answer 3

I think using collection method each and contains, it can be done like this
$collection1->each(function ($value, $key) use ($collection2){
return $collection2->contains($value);
});
dd($collection1);
I test it in routes file web.php like
use Illuminate\Support\Collection;
Route::get('test', function(){
$collection1 = new Collection([
'bear',
'whale',
'chicken',
'tardigrade'
], [[
'bear8',
'whale44',
'chicken45',
'tardigrade445'
]]);
$collection2 = new Collection([
'bear1',
'whale2',
'chicken3',
'tardigrade4'
], [[
'bear',
'whale',
'chicken',
'tardigrade'
]]);
$collection1->each(function ($value, $key) use ($collection2){
return $collection2->contains($value);
});
dd($collection1);
});

Answer 4

use intersect https://laravel.com/docs/9.x/collections#method-intersect
for example:
$commonValues = $collection1->pluck("id")->intersect($collection2->pluck("id"));
dd($commonValues);
Then get common collections
dd($collection1->whereIn("id", $commonValues));

Answer 5

try this
$a1 = array(
array('name' => 'asdfjkl;', 'class' => 'foo'),
array('name' => 'qwerty', 'class' => 'bar'),
array('name' => 'uiop', 'class' => 'baz'),
);
$a2 = array(
array('name' => 'asdfjklk;', 'class' => 'foo'),
array('name' => 'qwertyxs', 'class' => 'bar'),
array('name' => 'uiop', 'class' => 'baz'),
);
$cc = array_uintersect($a1, $a2, 'cmp');
print_r($cc);
function cmp($a1, $a2){
return strcasecmp($a1['name'] , $a2['name']);
}