Number
February 3, 2026 · View on GitHub
Number()
Validates if the input is a number.
v::number()->assert(42);
// Validation passes successfully
v::number()->assert(acos(8));
// → `NaN` must be a number
"In computing, NaN, standing for not a number, is a numeric data type value representing an undefined or unrepresentable value, especially in floating-point calculations." Wikipedia
Templates
Number::TEMPLATE_STANDARD
| Mode | Template |
|---|---|
default | {{subject}} must be a number |
inverted | {{subject}} must not be a number |
Template placeholders
| Placeholder | Description |
|---|---|
subject | The validated input or the custom validator name (if specified). |
Categorization
- Numbers
Changelog
| Version | Description |
|---|---|
| 3.0.0 | Templates changed |
| 2.0.0 | Created |