What are the php mb extension functions?
Commonly used php mb extension functions include "mb_strlen", "mb_strpos", "mb_substr", "mb_convert_encoding", "mb_convert_case", "mb_strtoupper", "mb_strtolower", "mb_detect_encoding", "mb_internal_encoding" and " mb_http_output" etc.
The operating environment of this tutorial: windows10 system, php8.1.3 version, DELL G3 computer.
In PHP, the mb extension function is a set of functions for processing multi-byte strings. These functions can handle various different character encodings, such as UTF-8, GBK, etc. Using the mb extension function, strings containing multi-byte characters such as Chinese, Japanese, Korean, etc. can be easily processed.
The following are some commonly used mb extension functions:
1. mb_strlen(string $str, string $encoding = null): Returns the length of the specified string. You can specify the encoding method of the string. If not specified, the internal encoding method will be used by default.
2. mb_strpos(string $haystack, string $needle, int $offset = 0, string $encoding = null): Search the given string for the specified substring and return the first occurrence. You can specify the starting position and encoding of the search.
3. mb_substr(string $str, int $start, int $length = null, string $encoding = null): Returns the substring of the specified string. You can specify the starting position, length and encoding of the substring.
4. mb_convert_encoding(string $str, string $to_encoding, mixed $from_encoding = null): Convert the encoding of a string to the specified encoding.
5. mb_convert_case(string $str, int $case = MB_CASE_UPPER, string $encoding = null): Converts the character case in the specified string to the specified case. You can specify the case and encoding of the conversion.
6. mb_strtoupper(string $str, string $encoding = null): Convert characters in the specified string to uppercase. Encoding method can be specified.
7. mb_strtolower(string $str, string $encoding = null): Convert characters in the specified string to lowercase. Encoding method can be specified.
8. mb_detect_encoding(string $str, mixed $encoding_list = null, bool $strict = false): Detect the encoding of a string. You can specify a list of encoding methods and whether to use strict mode.
9. mb_internal_encoding([string $encoding = null]): Gets or sets the internal encoding method. If the encoding method is specified, the internal encoding method will be set; if the encoding method is not specified, the current internal encoding method will be returned.
10. mb_http_output([string $encoding = null]): Gets or sets the HTTP output encoding method. If the encoding method is specified, the HTTP output encoding method will be set; if the encoding method is not specified, the current HTTP output encoding method will be returned.
The above are some commonly used mb extension functions. By using these functions, you can handle multi-byte strings more flexibly and ensure correct character encoding. This is very useful for processing strings containing non-ASCII characters, such as in international website development where content in different languages often needs to be processed. .
The above is the detailed content of What are the php mb extension functions?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
