Laravel 5 Collections: Determining if a Collection Contains an Element Using Strict Comparison With containsStrict

The containsStrict method is similar to the contains method; it acts as a shortcut to calling the contains method with a strict comparison operator.

#Signature

1public function containsStrict(
2    $key,
3    $value = null
4);

#Example Use

The following examples demonstrate the behavior of the containsStrict method:

1$prices = collect([
2    '9.99',
3    '19.99',
4    '14.99',
5]);
6
7$contains = $prices->containsStrict(9.99);

After the above code has executed, the value of the $contains variable would be false; this is because our collection contains string values and we are supplying a float value for our comparison value. If we replaced the line with $prices->containsStrict('9.99'), the containsStrict method would have returned true.

The following example demonstrates the containsStrict method when specifying both a key and value:

 1$products = collect([
 2    [
 3        'name' => 'Office Chair',
 4        'price' => 419.99
 5    ],
 6    [
 7        'name' => 'Wooden Desk',
 8        'price' => 699.99
 9    ]
10]);
11
12$contains = $products->containsStrict('price', 699.99);

Since the $products collection does in fact contain a price key with the value 699.99, the $contains variable would contain the value true.

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