-2147483648
2147483647
0
4294967295
BIGINT
8
-9223372036854775808
9223372036854775807
0
18446744073709551615
What is the maximum length of varchar in MySQL? One. VarChar Storage rules: 4.0 versions, varchar (20), refers to a byte , if stored UTF8 kanji, can only save 6 (3 bytes per kanji)
( ' Qs_street ', $_get); $htm. = " }; if (empty ( $htm)) { $htm = " exit ( $htm); } /span>
Here the analysis finds that the page returns the results of the query and constructs some union query statements to get the sensitive information of the database.0x04 Vulnerability ProofWe use inject two (with Echo) to do the prooffound that the 74CMS category table has 9 fields, so construct a POC that gets the database user and related information: http:
:/* some comments */Garbled instances:Normal code:/* Three kanji */Caused by garbled:/* Juan Corporation 眽 Ying?Browser Environment: IE6html:gb2312CSS: No coding is specified, the actual parsing is utf-8.DOCTYPE HTML>HTML>Head> MetaCharSet= "gb2312" /> styletype= "Text/css">P{/*three kanji*/Color:#f00;} style>Head>Body>P>TestP>Body>HTML>IE7 view the source file.In IE6 the following versions of the
;addchild ($key )); }else{ //$value =utf8_encode ($value); if (Preg_match ("/([X81-xfe][x40-xfe])/", $value, $match)) { $value = iconv (' GBK ', ' utf-8 ', $value); //Determine if a Chinese character appears } $xml->addchild ($key, $value); } } return $xml->asxml (); }
Back to everyone else on the Chinese regular example
1. Determine if the strings are all Chinese characters
The code is as follows
Copy Code
$str = ' All are
Sun.unicode value is Uncodelittle,aix and its value is unicodebig. Too much TM mess. Why is little in Windows? Is Big in AIX? Just because of "Microsoft"? Too TM has the only. Oh, I ' m a Big man!BTW: Kim Jong Il is the son of Kim Il Sung. It is said to have been translated into E: The king who was Fxxking is the son of the king who had fxxked.3.2.2 Download and install the IBM JDKTemporarily ruled out the Oracle JDBC driver suspect, when tracking code, found that before calling JdbcTemplate sa
keywords with", "pointsorderway= ' desc ' value is DESC or ASC, specifying whether the sort is descending or a forward sort, the default is descendingWorking with instancesInvoke Recommended Articles {dede:arclist flag= "C" channelid= ' row= ' titlelen= ' ' orderby= ' {/dede:arclist} row= ' 10 ' calls 10, titlelen= ' 60 ' title length 30 kanji flag= "C" recommended article orderby= "Default to sort by publication time flag = ' C ' custom at
The analog keyboard input is implemented using the following 2 syntaxes.Sendkeys.send (string keys); Analog kanji (text) inputSendkeys.sendwait (string keys); Analog Key inputLet's take a look at the usage of the 2 syntax! Post the code later to see if you can read it.(1) Each key is represented by one or more characters. In order to specify a single keyboard character, you must press the key of the character itself. For example, to represent the lett
As for the wide-byte injection, someone wrote it, and I don't write more:Https://www.91ri.org/8611.htmlHttp://netsecurity.51cto.com/art/201404/435379_4.htmFor the Iconv () function, I tried to write a URL-encoding conversion for UTF-8 and GBKImportos,urllibprint "" "Ifuwantchangegbktoutf-8,pleaseinput gbk,soasinpututf-8.inputexitandexit,othersmakeutry agin "" "St=raw_input () DEFNBSP;UTF8CWGBK (ST): ifst==" Utf-8 ": print "Inputstring" url1=raw_input () st1= Urllib.unquote (URL1) st2=st1.decode
Built-in functions are much more, just record the next part today.ABS ()Seek absolute value>>> ABS ( -10.1)All () is true, parameters are iterative>>> All ([12,3,4,5, None]) FalseAny () is true, it is true>>> any ([12,3,4,5, None]) TrueBOOL () Boolean value>>> bool (1) True>>> bool (0) FalseASCII () automatic execution of __repr__ objectsChestnuts:class Foo: def __repr__ (self): return " 444 " = ASCII (Foo ())print(n)print(Bin (5))print (Oct (9))print(hex) Result:4440b1010o110xfBin
ObjectiveOn the internet about JS to achieve the Chinese character and Pinyin cross-transfer of the article a lot, but more messy, are copied to each other to copy, and some do not support polyphone, some do not support the tone, some dictionary file is too large, also such as sometimes I just need to get Chinese pinyin initials but to introduce 200KB dictionary file, Cannot meet the needs according to actual needs.In conclusion, I have carefully collated and modified several common dictionary f
PHP Judging Chinese, English, digital
$str = ' ASB Tianshui 12 ';
if (Preg_match ("/^[\x7f-\xff]+$/", $str)) {Echo ' All is Kanji ';}else {Echo ' is not all Chinese characters ';}
/**
PHP comes with the judgment whether it is Chinese,
Eregi (' [^\x00-\x7f] ', $str)//Chinese
Eregi (' [0-9] ', $STR)//number
Eregi (' [a-za-z] ', $STR)//English
*/
if (eregi (' [^\x00-\x7f] ', $str) | | eregi (' [0-9] ', $str) | | eregi (' [a-za-z] ', $str)) {
Echo ' You
: Determines what type of value the object can hold, what action to perform, what rules to follow, and the type () to get
Value: Real data saved by the object
Standard data types: numbers, strings, lists, tuples, dictionariesOther data types: collections, Functions/methods, modules, NULL, type types, classes, files4.1 Number typesDefinition: a=1Characteristics:1. Only one value can be stored2. Once defined, cannot be changed3. Direct AccessCategories: Integer, Long, Boolean, floating po
"Example" Select InStr (' A software company in Chongqing ', ' a ', 1,1 '), INSTRB (' A software company in Chongqing ', ' a ', 1,1) instring from dual; return: 3,5
?
1
INSTRB (C1,c2[,i[,j]]) "function" searches for a specified character in a string, returning the location of the specified character; "description" Multibyte characters (kanji, full-width characters, etc.) computes the "parameter" by 2 characters C1 the searc
Tags: serve string union all else Lin Sha BSP ext NIOThe function passes in a string and returns the data: if it is a kanji character, the first letter of the character is returned, and if it is a non-kanji character, it returns itself.Second, the use of the knowledge Point: The Chinese character corresponding to the Unicode value, the Chinese character collation rules.Third, database functions:CREATE FUNCT
The database current character set is Al32utf8, if you intend to change the character set to ZHS16GBK, execute the following command:"ALTER DATABASE national CHARACTER SET internal_use ZHS16GBK"Can you achieve the desired goal?Let's take a look at what happens at the database level by executing the above command.In a database with a character set of Al32utf8, create a table that inserts some Chinese characters and some printable characters into two fields, respectively.1. Create a tableCREATE TA
the binary representation of the name corresponding value #operation on binary representation of name corresponding value
#Parameters:
#Name,redis's name
#offset, the index of the bit (converting the value to binary before indexing)
#value, which can only be 1 or 0
#Note: If there is a corresponding in Redis: N1 = "Foo",Then the binary representation of String Foo is: 01100110 01101111 01101111So, if you execute Setbit ('N1', 7, 1), the 7th bit is set to 1, then the final b
Tags: hint strong and denotes maximum information judgment field conversionThe difference between varchar and char in MySQL (GO)What is the maximum length of varchar in MySQL?one. VarChar Storage rules:4.0 versions, varchar (20), refers to a byte , if stored UTF8 kanji, can only save 6 (3 bytes per kanji)More than 5.0 versions, varchar (20), refers to the number of characters , whether it is stored in numbe
)) { $htm = " exit ( $htm); } /span>
Here the analysis finds that the page returns the results of the query and constructs some union query statements to get the sensitive information of the database.0x04 Vulnerability ProofWe use inject two (with Echo) to do the prooffound that the 74CMS category table has 9 fields, so construct a POC that gets the database user and related information: http://localhost/74cms(20140310)/plus/ajax_street.php?act=keykey=%E
Chinese character display mainly has ZHS16CGB231280,US7ASCII,WE8ISO8859P1 and so on. Character sets need to be present not only on the server side, but also in the character set registration. On the server side, the character set is specified when Oracle is installed, the character set registration information is stored in the V$nls_parameters table of the Oracle database dictionary, the client, the character set in two cases, one case is Sql*net 2.0 or less, The character set is registered in
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