1# In
2
3- `v::in(mixed $haystack)`
4- `v::in(mixed $haystack, boolean $identical = false)`
5
6Validates if the input is contained in a specific haystack.
7
8For strings:
9
10```php
11v::in('lorem ipsum')->validate('ipsum'); // true
12```
13
14For arrays:
15
16```php
17v::in(['lorem', 'ipsum'])->validate('lorem'); // true
18```
19
20A second parameter may be passed for identical comparison instead
21of equal comparison.
22
23Message template for this validator includes `{{haystack}}`.
24
25***
26See also:
27
28  * [StartsWith](StartsWith.md)
29  * [EndsWith](EndsWith.md)
30  * [Contains](Contains.md)
31