substr function

Oralce functions substr and mysql functions substring_index note ???? Recently, I occasionally saw the substring_index function in the mysql database. First, I would like to briefly introduce the substring_index function of mysql .???

Oracle supports the following four regular expression functions: 1, REGEXP_LIKE: similar to LIKE, which is much more powerful than LIKE. 2, REGEXP_INSTR: With INSTR Oracle supports the following four regular expression functions: 1, REGEXP_LIKE:

This article provides a detailed analysis of common PHP5 functions. For more information, see This article provides a detailed analysis of common PHP5 functions. For more information, see As follows: The Code is as follows: The usleep ()

Oraclesubstr function usage Oracle substr function usageObtain the string substr (string, start_position, [length]) with the specified start position and length in the string.For example:Substr ('this is a test ',6,2) Wocould return 'is'Substr

[ORACLE] processing of oracle string objects 2.1 char field, varchar2 Field (1) Defining the field length char (10) indicates that the field can contain 10 English characters (regardless of the encoding method, do English characters occupy 10 bytes ?

Some Oracle database query optimization suggestions are comprehensive, oracle Database 1. To optimize the query, try to avoid full table scanning. First, consider creating an index on the columns involved in where and order. 2. Try to avoid null

As follows:Copy codeThe Code is as follows:The usleep () function delays code execution in several microseconds.The unpack () function unpacks data from binary strings.The uniqid () function generates a unique ID based on the current time in

Php string function learning substr () This article mainly introduces substr () in php string function learning. This article describes its definition and usage, parameter descriptions, prompts and comments, and multiple examples, for more

Today, I encountered a problem of intercepting Chinese and English strings. in gbk, each word occupies two bytes in Chinese. if it is all Chinese, use the substr () function, however, if both Chinese and English are available, it will be troublesome.

This article mainly introduces some string operation functions in PHP that can replace regular expression functions. This article summarizes some special string operation functions. For more information, see 0x01: perform lexical analysis on strings

In PHP, the substr function to capture the last character string will appear garbled, because of the Chinese UTF-8 encoding, each Chinese character occupies 3 bytes, while GB2312 occupies 2 bytes, English occupies 1 byte, the truncation bit is

SUBSTR () function can be used to split the text, but the text to be divided if the inclusion of Chinese characters tend to encounter problems, you can use MB_SUBSTR ()/mb_strcut This function, Mb_substr ()/mb_strcut usage and substr () similar,

How to get the size of a disk partition via PHP file system functions Through the file system function not only can the directory, the file operation, but also can obtain the directory, the file related information, then can obtain the disk

My database storage may contain time and seconds of the timestamp, now there is a time only years and days need to be compared if the equality of the query out, which God guidance how to judge the query, thank you very much. Reply content: My

PHP function is very powerful, presumably the students should know that in our PHP development to apply to PHP functions is unavoidable, and we commonly used PHP functions you know what, we have to see what it is! Array_intersect ()

The following code can be used to determine the length of a Chinese string in a mixed string. because php does not support Chinese computing, we have customized a function. The following code can be used to determine the length of a Chinese string

In the previous article we gave you the implementation of the PHP intercept string, and PHP interception of the use of Chinese strings, then we in the interception of Chinese strings, a lot of time will appear garbled problem, then we will introduce

65279; 65279; mysql stored procedure error debugging records the company's platform runs on the mysql database, some stored procedures report errors, debugging process pain, recording errors and solutions for reference. Debugging environment:

Annotation symbol: single-line annotation using single quotation marks for multi-line annotation. it is a simple string and can be taken directly without any processing. & quot; double quotation marks, php dynamic processing and output, it is

This article mainly introduces PHP to get the current execution of the PHP file name code, the need for friends can refer to the next day to write the wall when the navigation judgment encountered this problem. My solution is this: judge the current