respect-validation/docs/validators/LessThan.md
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<!--
SPDX-FileCopyrightText: (c) Respect Project Contributors
SPDX-License-Identifier: MIT
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# LessThan
- `LessThan(mixed $compareTo)`
Validates whether the input is less than a value.
```php
v::lessThan(10)->assert(9);
// Validation passes successfully
v::lessThan(10)->assert(10);
// → 10 must be less than 10
```
Validation makes comparison easier, check out our supported
[comparable values](../comparable-values.md).
Message template for this validator includes `{{compareTo}}`.
## Templates
### `LessThan::TEMPLATE_STANDARD`
| Mode | Template |
| ---------: | :---------------------------------------------- |
| `default` | {{subject}} must be less than {{compareTo}} |
| `inverted` | {{subject}} must not be less than {{compareTo}} |
## Template placeholders
| Placeholder | Description |
| ----------- | ---------------------------------------------------------------- |
| `compareTo` | Value to be compared against the input. |
| `subject` | The validated input or the custom validator name (if specified). |
## Categorization
- Comparisons
## Changelog
| Version | Description |
| ------: | :---------- |
| 2.0.0 | Created |
## See Also
- [Between](Between.md)
- [BetweenExclusive](BetweenExclusive.md)
- [GreaterThanOrEqual](GreaterThanOrEqual.md)
- [Length](Length.md)
- [LessThanOrEqual](LessThanOrEqual.md)
- [Max](Max.md)
- [Min](Min.md)