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$collection = collect([
    ['product_id' => '100', 'name' => 'Desk'],
    ['product_id' => '200', 'name' => 'Chair'],
]);

//1. delete using filter, return only product_id not equal to 200, we filter unwanted data

$collection = $collection->filter(function($item) {
    return $item->product_id != '200';
});


//2. delete by id

$collection = collect([
    ['product_id' => '100', 'name' => 'Desk'],
    ['product_id' => '200', 'name' => 'Chair'],
]);

$keyed = $collection->keyBy('product_id');

/*
    [
        '100' => ['product_id' => '100', 'name' => 'Desk'],
        '200' => ['product_id' => '200', 'name' => 'Chair'],
    ]
*/

//remove item with key 200

$keyed->forget(200);