How to check if letter is upper or lower in PHP?

Posted by tomaszs on Stack Overflow See other posts from Stack Overflow or by tomaszs
Published on 2010-05-11T22:29:59Z Indexed on 2010/05/11 22:34 UTC
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I have texts in UTF-8 with diacritic characters also, and would like to check if first letter of this text is upper case or lower case. How to do this?

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