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be72a54845They only know what message a rule produces when they try running it. Including the messages in the documentation will make it easier for people to know what to expect. There are a couple of undocumented placeholders, but I can live with that for now.
56 lines
1.6 KiB
Markdown
56 lines
1.6 KiB
Markdown
# IterableVal
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- `IterableVal()`
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Validates whether the input is an iterable value, in other words, if you can iterate over it with the [foreach][] language construct.
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```php
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v::iterableVal()->isValid([]); // true
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v::iterableVal()->isValid(new ArrayObject()); // true
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v::iterableVal()->isValid(new stdClass()); // true
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v::iterableVal()->isValid('string'); // false
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```
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## Note
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This rule doesn't behave as PHP's [is_iterable() function because it considers that you can iterate over any object.
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## Templates
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`IterableVal::TEMPLATE_STANDARD`
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| Mode | Template |
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|------------|----------------------------------------|
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| `default` | {{name}} must be an iterable value |
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| `inverted` | {{name}} must not be an iterable value |
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## Template placeholders
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| Placeholder | Description |
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|-------------|------------------------------------------------------------------|
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| `name` | The validated input or the custom validator name (if specified). |
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## Categorization
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- Types
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## Changelog
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| Version | Description |
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|--------:|----------------------------------------------|
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| 3.0.0 | Renamed from `IterableType` to `IterableVal` |
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| 1.0.8 | Renamed from `Iterable` to `IterableType` |
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| 1.0.0 | Created as `Iterable` |
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***
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See also:
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- [ArrayType](ArrayType.md)
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- [ArrayVal](ArrayVal.md)
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- [Countable](Countable.md)
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- [Each](Each.md)
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- [Instance](Instance.md)
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- [IterableType](IterableType.md)
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[is_iterable()]: https://www.php.net/is_iterable
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[foreach]: http://php.net/foreach
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