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# StringVal

- `StringVal()`

Validates whether the input can be used as a string.

```php
v::stringVal()->assert('6');
// Validation passes successfully

v::stringVal()->assert('String');
// Validation passes successfully

v::stringVal()->assert(1.0);
// Validation passes successfully

v::stringVal()->assert(42);
// Validation passes successfully

v::stringVal()->assert(false);
// Validation passes successfully

v::stringVal()->assert(true);
// Validation passes successfully

v::stringVal()->assert(new ClassWithToString());
// Validation passes successfully
```

## Templates

### `StringVal::TEMPLATE_STANDARD`

|       Mode | Template                         |
| ---------: | :------------------------------- |
|  `default` | {{subject}} must be a string     |
| `inverted` | {{subject}} must not be a string |

## Template placeholders

| Placeholder | Description                                                      |
| ----------- | ---------------------------------------------------------------- |
| `subject`   | The validated input or the custom validator name (if specified). |

## Categorization

- Strings
- Types

## Changelog

| Version | Description       |
| ------: | :---------------- |
|   3.0.0 | Templates changed |
|   2.0.0 | Created           |

## See Also

- [Alnum](Alnum.md)
- [BoolType](BoolType.md)
- [CallableType](CallableType.md)
- [FloatType](FloatType.md)
- [IntType](IntType.md)
- [NullType](NullType.md)
- [ObjectType](ObjectType.md)
- [ResourceType](ResourceType.md)
- [StringType](StringType.md)