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@ 2014-06-01T16:34:17Z

<?php

$str = 'привет';
$str2 = 'Hello';

echo $str;
echo strtoupper($str);
echo $str2;
echo strtoupper($str2);
echo $str.$str2;

Output
Performance
VLD
References
Branches

strtoupper: documentation ( source)

preferences:dark modelive preview

39.34 ms | 402 KiB | 5 Q