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run code in 150+ php & hhvm versions
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<?php $string = '測試'; var_dump($string{0}); var_dump(ord($string{0})); var_dump(dechex(ord($string{0})));
based on YBjWX
Output for 4.3.0 - 7.1.0
string(1) "�" int(230) string(2) "e6"