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Unicode,gbk,utf-8 differencesIn simple terms, UNICODE,GBK and five yards are encoded values, and utf-8,uft-16 is the expression of this value. And the preceding three kinds of coding is a compatible, the same Chinese character, that three code value is completely different. such as "Han" Uncode value and GBK is not the same, assuming that Uncode is A040,GBK for b030, and Uft-8 code, that is, the value of the form of expression. Utf-8 code completely only for Uncode to organize, if GBK to turn UT

Http://www.cnblogs.com/cy163/archive/2007/05/31/766886.htmlUnicode,gbk,utf-8 differencesIn simple terms, UNICODE,GBK and five yards are encoded values, and utf-8,uft-16 is the expression of this value. And the preceding three kinds of coding is a compatible, the same Chinese character, that three code value is completely different. such as "Han" Uncode value and GBK is not the same, assuming that Uncode is A040,GBK for b030, and Uft-8 code, that is, the value of the form of expression. Utf-8 cod

only support GBK. The difference between the codes is explained in detail In short, the UNICODE,GBK and the big five yards are encoded values, and the utf-8,uft-16 is the representation of the value. The previous three codes are compatible, the same characters, and the three yards are completely different. such as "Han" Uncode value and GBK is not the same, assuming that uncode for A040,GBK b030, and Uft-8 code, that is the form of the value expression. Utf-8 code solely for Uncode to organize,

next two bytes as a double-byte if you encounter a byte with a high of 1, regardless of what the low byte high is. 2. Unicode, UCS and UTF Previous coding methods from ASCII, GB2312, GBK to GB18030 are backward-compatible. Unicode is compatible with ASCII only (or, more accurately, iso-8859-1 compatible), and is not compatible with GB code. For example, the Unicode encoding of the word "Han" is 6c49, while the GB code is baba. Unicode is also a me

PHP achieves Unicode and Utf-8 mutual conversion I. coding principles and implementation Unicode encoding is the basis for UTF-8 and gb series encoding (gb2312, gbk, and gb18030) Conversion. although we can also directly create a UTF-8-to-these encoding table, but few people will do this, because the variable encoding of UTF-8 is uncertain, so the general use of unicode and gb encoding in contrast to the table, unicode (UCS-2) is actually the basic

form: 00010110 00101110 is only two bytes. Binary files can also be displayed on the screen, but their contents are unreadable. When processing these files, the C system does not distinguish between types, which are treated as character streams and processed in bytes. The start and end of a stream of input and output characters is controlled only by program control and not by physical symbols such as carriage returns. Therefore, this file is also referred to as a "streaming file".

I. Coding principle and implementationUnicode encoding is the basis for implementing Utf-8 and GB series encoding (GB2312, GBK, GB18030), although we can also directly do a utf-8 to these coded comparison table, but very few people will do so, because the UTF-8 variable encoding has uncertainty, Therefore, the general use of Unicode and GB encoding of the comparison table, Unicode (UCS-2) is actually utf-8 the underlying encoding, Utf-8 is only one of

gb2312 text is still a location code. From the location code to the inner code, you need to add A0 to the high byte and low byte respectively. For any character encoding, the encoding unit sequence is specified by the encoding scheme and is irrelevant to the endian. For example, the GBK encoding unit is byte, and two bytes are used to represent a Chinese character. The order of these two bytes is fixed and is not affected by the CPU's byte order. The encoding unit of the UTF-16 is word (double

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