ucs c240

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

function unescape ( $str ) { $str = Rawurldecode ( $str ); Preg_match_all ("/(?:%u. { 4}) | #x. {4};|#\d+;|.+/u ",$str,$r);$ar=$r[0];//print_r ($ar);foreach($arAs$k=$v) {if(substr($v,0,2) =="%u"){$ar[$k] = Iconv ("Ucs-2be","UTF-8",Pack("H4",substr($v,-4))); } elseif (substr($v,0,3) ==" #x"){$ar[$k] = Iconv ("Ucs-2be","UTF-8",Pack("H4",substr($v,3,-1))); } elseif (substr($v,0,2) ==" A") {$ar[$k] = Iconv ("

In the past two days, I took the time to summarize/sort out the actual encoding methods and usage of various encodings in Java applications. I will record them here for future reference. In order to form a complete understanding and in-depth understanding of text encoding, in order to deal with various problems encountered during Java development, especially the garbled problem, I think it is better to make up a series to describe and analyze, including three articles: First Article: Java charac

: This article mainly introduces how to use PHP to convert Unicode to a UTF-8, for PHP tutorials interested in students can refer. Function unescape ($ str) {$ str = rawurldecode ($ str ); Preg_match_all ("/(? : % U. {4}) | # x. {4}; | # \ d +; |. +/U ", $ str, $ r); $ ar = $ r [0]; // print_r ($ ar ); foreach ($ ar as $ k = >$ v) {if (substr ($ v,) = "% u ") {$ ar [$ k] = iconv ("UCS-2BE", "UTF-8", pack ("H4", substr ($ v,-4 )));} elseif (substr (

Abstract: This article describes the conversion algorithms of common encodings in detail after sorting out various types of data. I. general character set (UCS) ISO/IEC 10646-1 [ISO-10646] defines a character set of more than 8 bits, known as the general character set (UCS), which contains most of the world's writeable character systems. Two types of multi-8-bit encoding have been defined, and each charact

The following small series for everyone to bring an article with How PHP converts Unicode to UTF-8 (recommended)。 Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting. Examples are as follows: function Unescape ($str) { $str = Rawurldecode ($STR); Preg_match_all ("/(?:%u.{4}) |. {4};|\d+;|.+/u ", $str, $r); $ar = $r [0]; Print_r ($ar); foreach ($ar as $k + $v) { if (substr ($v, 0,2) = = "%u") {$ar

Explanation of common codesAuthor: Li JinnanAbstract: This article describes the conversion algorithms of common encodings in detail after sorting out various types of data.I. general character set (UCS)ISO/IEC 10646-1 [ISO-10646] defines a character set of more than 8 bits, known as the general character set (UCS), which contains most of the world's writeable character systems. Two types of multi-8-bit enc

the Ubuntu Chinese forum and configured it directly. AllCodePaste it directly to the terminal to run it!InstallProgramCode:Sudo apt-Get install vim-GTK vim-Doc cscope Create a startup ItemCode: Cat>/usr/share/applications/gvim. Desktop "========================================================== =========================================="Project: gvim configuration fileBy yonsan [QQ: 82555472]"Installation: sudo apt-Get install vim-GTK"Usage: Copy this file (. vimrc) to $ home/"============

using the 51 Series C language, you have noticed that the C language of the controller and the C language used on the PC are significant. Features: hardware operations are often required. The program has a large number of statements that operate on the internal resources of the controller. Therefore, open The sender should understand how to use the C language to manipulate the internal resources of the controller, that is, how to use the C statement to operate registers and internal memory Stor

Linux system Introduction Vim encoding and font details Like all popular text editors, VIM can well edit a variety of character encoding files, which of course include popular unicode encoding methods such as UCS-2 and UTF-8. Unfortunately, like a lot of software from the Linux world, you need to set it yourself.Vim has four options related to the character encoding method: encoding, fileencoding, fileenc

multilingual plane, The code segment from D800 to DFFF is permanently reserved and is not mapped to characters, so the UTF-16 encoding cleverly leverages this retained code point to encode characters in the auxiliary plane, which is explained later. Unicode is just a set of symbols, only the code points corresponding to the specified characters, and does not specify how to store, how to store there is a different encoding scheme, about the Unicode encoding scheme has two main main lines:

high byte from 81 to FE, low byte from 40 to 7E and 80 to FE; 4 byte first three byte from 81 to FE, the second and fourth bytes are from 30 to 39. UNICODE Unicode name "Universal Multiple-Octet Coded Character Set", short for UCS, is a Set of Character encodings maintained by international organizations. The UCOS assigns a unique code point (code point) to each character, which is usually expressed as U + xxxx, where xxxx is the corresponding hexade

This statement can be reproduced at will, but the original author charlee and original link http://tech.idv2.com/2008/02/21/unicode-intro/must be indicated during reprinting. Basic knowledge Differences between byte and character Big endian and little endian UCS-2 and UCS-4 UTF-16 and UTF-32 UTF-16 UTF-32 UTF-8 Basic knowledge Before int

a character, it is an auxiliary plane character, the code point is u+1d306, and the calculation process of converting it to UTF-16 is as follows. H= Math.Floor (0x1d306-0x10000) /0x400) +0xd800 = 0xd834l = (0x1d306-0x10000) % 0x400+ 0XDC00 = 0xdf06 Therefore, the UTF-16 encoding of the character is 0xd834 DF06, which is four bytes in length.V. What encoding does JavaScript use?The JavaScript language uses the Unicode character set, but only one encoding method is supported.This co

point is u+1d306, and the calculation process of converting it to UTF-16 is as follows. H = Math.floor ((0x1d306-0x10000)/0x400) +0xd800 = 0xd834l = (0x1d306-0x10000)% 0X400+0XDC00 = 0xDF06 Therefore, the UTF-16 encoding of the character is 0xd834 DF06, which is four bytes in length.V. What encoding does JavaScript use?The JavaScript language uses the Unicode character set, but only one encoding method is supported.This code is neither UTF-16, nor UTF-8, nor UTF-32. The coding met

permanently reserved and is not mapped to characters, so the UTF-16 encoding cleverly leverages this retained code point to encode characters in the auxiliary plane, which is explained later. Unicode is just a set of symbols, only the code points corresponding to the specified characters, and does not specify how to store, how to store there is a different encoding scheme, about the Unicode encoding scheme has two main main lines: UCS and UTF. UTF ma