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run code in 150+ php & hhvm versions
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<?php echo mb_strtoupper("ı ğ"); echo "\n"; echo strtoupper("ı ğ"); ?>
Output for 5.6.7 - 7.1.0
I Ğ ı ğ
Output for 4.3.0 - 5.5.35
ı ğ ı ğ