19 lines
287 B
Markdown
19 lines
287 B
Markdown
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# Cntrl
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- `v::cntrl()`
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- `v::cntrl(string $additionalChars)`
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This is similar to `v::alnum()`, but only accepts control characters:
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```php
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v::cntrl()->validate("\n\r\t"); // true
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```
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***
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See also:
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* [Alnum](Alnum.md)
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* [Prnt](Prnt.md)
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* [Punct](Punct.md)
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* [Space](Space.md)
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