substr function

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

In SQL Server, I often need to perform some time-type field conversions, but I don't quite remember it. So I collected the following SqlserverConvertDateTime-related materials and posted them on my site, it is convenient for you to search for it

A new feature of OracleDatabase10g greatly improves your ability to search and process character data. This feature is a regular expression used to describe the text mode. It has appeared in many programming languages and a large number of UNIX

The format of the INSTR method is INSTR (source string, target string, start position, matching serial number), for example: INSTR ( The format of the INSTR method is INSTR (source string, target string, start position, matching serial number), for

The following examples illustrate how to use regular expressions to solve common problems in work.1.REGEXP_SUBSTRThe REGEXP_SUBSTR function uses a regular expression to specify the start and end points of the returned string, and returns the same

Php Chinese string truncation method example summary, This example summarizes the php Chinese string truncation method, which is very practical. Share it with you for your reference. The specific method is analyzed as follows: Using the PHP function

Php does not have data (empty) when reading json. When PHP is used to call some json interface files, if file_get_contents is used to obtain the page json data After json_decode () is used for parsing, data cannot be normally output. The returned

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 microseconds. The time_sleep_until () function

With the development of the times, our development technology is also updated, and PHP is still quite common. So I have studied PHP array conversion to string, and I will share it with you here, I hope it will be useful to you. PHP is often used

I found many methods for intercepting Chinese Characters in php on the Internet. The most common method is to use the mb_substr function. This function requires php. expansion support in ini, but I have no permission to modify it. Substr

At the beginning, I started to contact C ++. I don't know much about it. Let's look at the Code provided by the boss. Here year = atoi (dateStr. substr (0, 4). c_str (); it's in the fog.Year = atoi (dateStr. substr (0, 4). c_str ());It contains

The front of each code segment has function annotations, parameter requirements, and other explanatory text, so it is not difficult to make more comments. To make it clear, make a small directory in sequence:Override window. setTimeout,Understand

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.

In php, The substr (), mb_substr (), and mb_strcut functions are character truncation functions. However, when substr intercepts Chinese characters, garbled characters are generated, and the two support Chinese truncation. I will introduce them

In the program, Oracle databases and SQL databases are often supported. Some Oracle built-in functions are mostly used, but the syntax in SQL is somewhat different. I have done some sorting and hope to help you .... 1. built-in functions in oracle:

Methods for prohibiting illegal calls and the introduction of hard path files in PHP There are some common files in PHP for convenience, we will make a common file, so that the unused files are called together. In order to prohibit public files from

1. Although each database supports SQL statements, each database also has operation functions supported by each database. These are single-row functions. If you want to develop a database, in addition to SQL statements, you must learn more functions.

This article mainly introduces several custom PHP functions. This article lists some common functional functions in WEB development, for example, submit and filter, string truncation, anonymization of IP addresses, and hiding the real path of a file.

This article mainly introduces the php Chinese truncation functions mb_strlen and mb_substr, which can be replaced by this function when the server does not have an mbstring library. For more information, see This article mainly introduces the php

Oracle merge query transaction SQL function knowledge learning. For more information, see Oracle merge query transaction SQL function knowledge learning. For more information, see Table query: Merge query: Use the union keyword to remove