parallel port device while the SATA is a serial port. The objective of SATA development is to replace the IDE;
The physical geometric structure of a hard disk is composed of a disk, a disk surface, a cylindrical disk, and a sector. A hard disk is enclosed by several discs, forming a decent bar; each disc has an upper/lower surface. The head is in contact with the disk surface to read data;
2. Algorithm of hard disk capacity and partition size;
The following information can be found through fd
the code and add other features to it.Use macro definitions in your code to differentiate between different traget1. In the bundle setting set the Proprecessor macros add a kfree kpro parameters to distinguish the end is that traget. In the code for the need to use this macro to determine the code block.2. Add proprecessor macros inside the code inside the macro definition, you will find that before compiling Xcode will intelligently choose different code. This allows you to share a project to
bytes to save it, so there is a 256*256=65536 kind of character can be expressed, it is enough. This is the UCS-2 standard. Later, some people say that not enough, then simply doubled, with four bytes, 256**4=4294967296, even if the future indicates that the alien text can support for some time. Of course, the UCS-2 standard is still used now. The UCS (Unicode
= mb_convert_encoding ($str, $coding, $enc);return $str;}Detection System CodingAt present, there is no suitable method, can only be placed in a Chinese file, and then cycle the use of different encoding detection, can read the file on the code is correctprotected static function _detectoscode () {$codingFile = '/coded-encoding-os-path.html ';$detectPath = __dir__. $codingFile;$allCoding = Mb_list_encodings ();foreach ($allCoding as $coding) {if (False!== stripos (' |byte2be|byte2le|byte4be|byt
linux and Windows is correct;
"Php
// Convert utf8 encoding to the current system encoding
Protected static function _ toOsCode ($ str, $ coding = null ){
$ Enc = 'utf-8 ';
If (empty ($ coding )){
$ Coding = self: $ osPathEncoding;
}
$ Str = mb_convert_encoding ($ str, $ coding, $ enc );
Return $ str;
}
// Detection system code
// Currently, no proper method is found. Only one Chinese file can be stored, and different encoding methods can be used for recycling. if you can read the file, t
Original string: http://www.qdta.cn/xxw/xxInfo.asp?xxlx= Travel Hot News id=12939
Want to convert to: http://www.qdta.cn/xxw/xxInfo.asp?xxlx= Travel Hot News id=12939
what function do you use?
Reply to discussion (solution)
function Unescape ($str) { $str = Rawurldecode ($STR); Preg_match_all ("/(?:%u.{4}) | #x. {4};|#\d+;|.+/u", $str, $r); $ar = $r [0];p Rint_r ($ar); foreach ($ar as $k + $v) { if (substr ($v, 0,2) = = "%u") $ar [$k] = Iconv ("
methods, such as the UTF-16 we talked about above, other UTF-8 we often use, and UTF-32.
Occasionally, we will see UCS-2 and UCS-4, what is their relationship with Unicode? In fact, Unicode Character Set, is called Unicode Character Set, English is Unicode character set, that is, UCOS, then the UCS-2 is to represent two bytes, that is, 16 bits to represent Unico
UNICODE: The encoding mechanism developed by unicode.org should include common texts all over the world.In 1.0, It is a 16-bit code, from u + 0000 to U + FFFF. each 2byte Code corresponds to one character. At the beginning of 2.0, the 16-bit limit was abandoned. The original 16-bit is used as the basic bit plane, and the 16-bit plane is added, which is equivalent to 20-bit encoding, the encoding range is 0 to 0x10ffff.
UCs:The universal character set defined in iso000046 according to ISO, which
I believe you must have met, open a Web page, but show a heap of like garbled, such as "бїяазъся", "????????"? Remember the message header fields Accept-charset, accept-encoding, Accept-language, content-encoding, content-language in HTTP? And that's what we're going to discuss next.
Directory:
1. Basic knowledge
2. Common character set and character encoding
2.1. ASCII character set encoding 2.2. Gbxxxx Character Set encoding 2.3. BIG5 Character Set encoding
3. The g
>
Unicode is commonly used in the UCS-2, it uses two bytes to encode a character, such as the Chinese character "warp" encoding is 0X7ECF, 0X7ECF converted to decimal is 32463,ucs-2 with two bytes to encode characters, 2 16 is equal to 65536, so ucs- 2 can encode a maximum of 65,536 characters. Encoding from 0 to 127 characters like ASCII-encoded characters, suc
vvvv 10 vvvvvv 10 vvvvvv00010000 001 fffff 11110vvv 10 vvvvvv 10 vvvvvv 10 vvvvvv00200000 03 ffffff 111110vv 10 vvvvvv 10 vvvvvv 10 vvvvvv 10 vvvvvv04000000 7 fffffff 1111110 V 10 vvvvvv 10 vvvvvv 10 vvvvvv 10 vvvvvv 10 vvvvvvvv
This looks good. The English characters are the same as those in ASCII. So Americans are not aware of any mistakes. Only other countries in the world need high bytes.Specifically, the Unicode code point of the "hello" string is u + 0048 U + 0065 U + 006c U + 006c U + 00
ASCII codes)
NT/2000:
Len ("ABC China") returns 5 (because each character is considered Unicode)
Uft8
Utf8 is a storage and transfer format. As mentioned above, each Unicode/UCOS character is stored in 2 or 4 bytes. Let's take a look at the comparison below:
Take "I am Chinese" as an ExampleStorage with ANSI: 12 bytesSave with Unicode/ucs2: 24 bytes + 2Bytes (header)Stored with ucs4: 48 bytes + 4 bytes (header)
Take "I am a Chinese" as an ExampleStorage in ANSI: 10 bytesSave with Uni
decoding failures when the file is not encoded, put the loose encoding method at the end. For example, Latin1 is a very loose encoding method. The text obtained by any encoding method is decoded using Latin1 and will not fail to be decoded.-Of course, the decoded results are naturally "garbled ". Therefore, if you put Latin1 at the top of fileencodings, opening any Chinese file is garbled.
The following is a fileencodings setting recommended on the Internet:Set fileencodings =
Unicode only has one character set. The three characters in Chinese, Japanese, and Korean occupy part of Unicode 0 x to 0x9 fff Unicode is currently widely used in UCS-2, it uses two bytes to encode a character, for example, the Chinese character "jing" is encoded as 0x7ecf. Note that the character encoding is generally expressed in hexadecimal notation. to distinguish it from decimal notation, hexadecimal notation starts with 0x, and 0x7ecf is conver
Character Set and encoding
Abbreviations:
ASCII: American Standard Code for information interchange
UCs: Universal Character Set
UTF: Unicode/UCOS Transformation Format
ASCII code
The ASCII code is a 7-bit code with the encoding range of 0x00-0x7f. The ASCII character set includes English letters, Arabic numerals, punctuation marks, and other characters. 0x00-0x20 and 0x7f contain 33 control characters.
The system that only supports ASCII Code ignor
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.