Usually we say the word is actually refers to the character, the character refers to the computer use of letters, numbers, words and symbols, including: 1, 2, 3, A, B, C, ~! #￥%......-* ()--+ and so on. The characters in different encoding formats are different, such as 2 bytes in GBK, 3 bytes in Utf-8, and iso8859-1 strictly for Chinese characters. Utf-8 is only an implementation of the Unicode Word table (all text has a uniform, unique encoding), and the number of bytes is longer. The basic universal utf-8 in the Internet can represent characters worldwide. Page Submission Form input box The length of the limit refers to the character length is not related to the byte, that is, English, symbols, Chinese characters, numbers are the same, check a few characters on the line.
Byte characters utf-8 Unicode and submit form validation character length ....
