I have some text coming into a database that apparently has some sort of Unicode issue. the literal text coming in is “5 mï ¿ ½ in area”, which appears to be some sort of unit of measure, but I can’t sort out what the meaning is in context. Searching Google shows many similar results, so this is apparently a common set of symbols.
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It’s the Unicode replacement character, 0xFFFD (
�); see also How to replace � in a stringSo I guess the text used to be
5m² in area, and the²was garbled into�before it arrived in your database.