Laravel - Collections - Method Diffkeys

The diffKeys method compares the collection against another collection or a plain PHP array based on its keys. This method will return the key / value pairs in the original collection that are not present in the given collection:

    
    $collection = collect([
        'one' => 10,
        'two' => 20,
        'three' => 30,
        'four' => 40,
        'five' => 50,
    ]);
    
    $diff = $collection->diffKeys([
        'two' => 2,
        'four' => 4,
        'six' => 6,
        'eight' => 8,
    ]);
    
    $diff->all();
    
    // ['one' => 10, 'three' => 30, 'five' => 50]