How to convert a utf-8 string to a utf-16 string in PHP
问题 How do I convert a utf-8 string to a utf-16 string in PHP? 回答1: mbstring supports UTF-16, so you can use mb_convert_encoding. 回答2: You could also use iconv. It's native in PHP, but require that all your text is one charset. Else it could discard characters. 来源: https://stackoverflow.com/questions/155514/how-to-convert-a-utf-8-string-to-a-utf-16-string-in-php