[Oracle] storage length of Chinese Character FieldsIn our system, if the remarks field requires 200 Chinese characters, this field is either set to varchar2 (600) or nvarchar2 (200 ).The following provides a reference for saving the length of Chinese characters in the remarks field of Oracle.Summary:1. Varchar2 field.
the concept of character and character group, \x{hex}, the expression of a 16 binary number, it should be noted that hex can be 1-2 bits or 4 bits, but if it is 4 bits must be added braces,At the same time, if the hex is greater than x{ff}, it must be modified with U connect prompt, otherwise it will be illegal.Only matches full-width characters can be found on the net: ^[\x80-\xff]*^/, here is no more bra
Package WZS. arithmetics; // judge whether the character belongs to Chinese public class ischineseorenglish {// general_punctuation judge Chinese "No. // cjk_symbols_and_punctuation judge Chinese. No. // halfwidth_and_fullwidth_forms to judge Chinese characters. No. Public s
Things are a little funny ... I worked with back-end partners to develop articles commenting on this little feature. During the development process, I have been submitting comments on letters and numbers that have never been submitted in Chinese characters. Until this comment small function basically finished, I accidentally submitted a comment in Chinese, incredibly, form submission failed, reported 500 of
PHP comes with several string truncation functions, including substr and mb_substr. When the former is processing Chinese characters, GBK is two length units, and UTF is three length units. after encoding is specified, a Chinese character is one length unit. PHP comes with several string truncation functions, including substr and mb_substr. When the former is pro
How can I extract a Chinese character and calculate its position? String 1: 1? 2? Nbsp; // Chinese Question Mark string 2 :? I? 2 nbsp; // question mark string in English 3: 1 nbsp; 2 nbsp; // How does php match the Chinese characters in the above strings with spaces in the middle? And find the location of the
PHP formula verification code and Chinese character verification code implementation method
In PHP website development, the verification code can effectively protect our forms from malicious submission. However, if you do not use the formula verification code or Chinese character verification code, you only ne
Provides various official and user-released code examples. For code reference, you are welcome to exchange and learn. You know that simple numbers or letter verification codes are easily cracked, however, the formula verification code or Chinese Character Verification Code cannot be cracked,
Therefore, we recommend that you use the formula verification code or Chinese
Php Chinese character to pinyin example. Copy the code as follows :? Bytes
The code is as follows:
Class Helper_Spell {Public $ spellArray = array ();Static public function getArray (){Return unserialize(file_get_contents('pytable_without_tune.txt '));}/*** @ Desc get the first letter of the string* @ Param $ string the string to be converted* @ Param $ whether isOne is the first letter* @ Param $ wheth
Chinese characters using PHP's own function interception sometimes encounter a question mark, below we have sorted out a few very good Chinese characters accurate interception examples.
PHP in the operation of the string problem time is nothing more than two problems:1. Determine if the string encoding is GBK or Unicode.2. Take the appropriate interception method for the corresponding code.
In general, we u
The string is encoded as GB2312 and a Chinese character takes up two bytes:
The code is as follows
Copy Code
The public static function Chinesesubstr ($str, $start, $len) {//$str refers to a string, $start the starting position of the string, $len the length of the string$strlen = $start + $len; Stores the total length of a string in $strlen, from the start of the string to the
Brief introductionThe previous article introduced the new addition in the class of the first version of the Chinese character function according to pinyin writing algorithm implementation, today said a modified algorithm.After the launch of the 3.2 version of the newsletter, we have improved the Chinese character recog
In PHP website development, the verification code can effectively protect our form is not maliciously submitted, but if not using formula verification code or Chinese character verification code, only the use of simple letters or digital verification code, such a verification code scheme is really safe?
We know that simple numbers or letters to verify the code is very easy to crack, but the formula verific
How can I extract a Chinese character and calculate its position? String 1: 1? 2? Nbsp; Chinese Question Mark string 2 :? I? 2 nbsp; English question mark string 3: 1 nbsp; 2 nbsp; how can php match the Chinese characters in the above strings with spaces in the middle? The location of the
The Chinese Character regular expression is a common expression that people will encounter during development. It is mainly used to obtain Chinese characters using the \ u4e00-\ u9fa5 and regular expressions. If you need it, refer to it. The Chinese Character regular express
We often use the strlen () function in PHP to understand the length of a string. The usage is as follows:PHP strlen () function definition and usageThe strlen () function returns the length of the string.SyntaxStrlen (string)Parameter: stringDescription: required. Specifies the string to be checked.Instance The code is as follows:Copy code Echo strlen ("Hello world! ");?> Output: 12How to handle ChinesePHP built-in functions such as strlen () and mb_strlen () calculate the number
Look at my example first.
Error resolution for character set
The problems that arise:Mysql> Update Users-> set username= ' Guan Yu '-> where userid=2;ERROR 1366 (HY000): Incorrect string value: ' Xb9xd8xd3xf0 ' for column ' UsernAme ' at row 1
An error occurred while inserting Chinese characters into the table. Mysql> select * from users;+--------+----------+| UserID | Username |+--------+----------+|
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