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<?php // \u0130 var_dump(utf8_decode('ü')); var_dump(mb_convert_encoding('&#x0130;', 'UTF-8', 'HTML-ENTITIES') );
Output for 5.2.11 - 5.2.17, 5.3.1 - 5.6.38, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.3.0rc4
string(1) "�" string(2) "İ"
Output for 4.3.0 - 5.2.10, 5.3.0
string(1) "�" string(4) "򯴂"