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@ 2014-09-08T18:23:58Z

<?php

var_dump(mb_convert_case('asdf', MB_CASE_UPPER, null));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
mb_convert_case: documentation ( source)

preferences:dark modelive preview

35.54 ms | 402 KiB | 5 Q