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


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



Source: Tips4allCCNA FINAL EXAM

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  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.

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  2. ASCII is 7 bits.
    Most other languages use 8 bits (1 byte).
    Many easter languages (Chinese, Japanese) use 16 bits (2 bytes).
    Unicode is usually 32 bits (4 bytes).


    How a character is stored and represented depends on the programming language and the platform you are using.

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