Laravel - Collections - Method Contains

The contains method determines whether the collection contains a given item. You may pass a closure to the contains method to determine if an element exists in the collection matching a given truth test:

    
    $collection = collect([1, 2, 3, 4, 5]);
    
    $collection->contains(function ($value, $key) {
        return $value > 5;
    });
    
    // false
	

Alternatively, you may pass a string to the contains method to determine whether the collection contains a given item value:

    
    $collection = collect(['name' => 'Desk', 'price' => 100]);
    
    $collection->contains('Desk');
    
    // true
    
    $collection->contains('New York');
    
    // false
	

You may also pass a key / value pair to the contains method, which will determine if the given pair exists in the collection:

    
    $collection = collect([
        ['product' => 'Desk', 'price' => 200],
        ['product' => 'Chair', 'price' => 100],
    ]);
    
    $collection->contains('product', 'Bookcase');
    
    // false
	

The contains method uses "loose" comparisons when checking item values, meaning a string with an integer value will be considered equal to an integer of the same value. Use the containsStrict method to filter using "strict" comparisons.