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<?php $test = "some\xc2\xa0 text"; var_dump($test); var_dump(mb_convert_encoding($test, 'UTF-7', 'UTF-8')); var_dump(mb_convert_encoding($test, 'UCS-2', 'UTF-8')); var_dump(mb_detect_encoding($test, ['UTF-7', 'UCS-2', 'UTF-8']));

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