16 lines
227 B
Markdown
16 lines
227 B
Markdown
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# Uppercase
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- `v::uppercase()`
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Validates if string characters are uppercase in the input:
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```php
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v::stringType()->uppercase()->validate('W3C'); // true
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```
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***
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See also:
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* [Lowercase](Lowercase.md)
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* [Roman](Roman.md)
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