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# ctype_upper

(PHP 4 >= 4.0.4)

ctype_upper -- Check for uppercase character(s)

## Description

``bool ctype_upper` (string c)`

Warning
This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change in a future release of PHP without notice. Be warned and use this function at your own risk.

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