How do I find out how many bytes a character has?

Question

I was wondering how do I find out how many bytes does a character have?

Answer 1

If you want to find out how many UTF-8 bytes a letter in a PHP string has then:

print strlen(mb_substr($string, 0, 1, "utf-8"));

strlen() returns the raw byte length, while mb_substr() returns a "character" according to the charset/encoding. In this example from position 0.