Home Backend Development PHP Tutorial Solution to using emoji expressions in php projects

Solution to using emoji expressions in php projects

Jan 02, 2018 pm 01:14 PM
emoji php solve

In daily life, it often happens that the content sent by users contains emoji expressions. Without processing, the content will be garbled when displayed. Therefore, this article introduces several processing methods involving emoji expressions in PHP WeChat development. I hope to be helpful.

Background

When you are doing WeChat development, you will find that storing WeChat nicknames is essential.

But the evil WeChat supports emoji expressions as nicknames, which is a bit painful

Generally, when designing Mysql tables, the UTF8 character set is used. When you insert the nickname field with emoji inside, it disappears and the entire field becomes an empty string. What's going on?

It turns out that the utf8 character set of Mysql is 3 bytes, and emoji is 4 bytes, so the entire nickname cannot be stored. What to do? Let me introduce several methods

Solution

1. Use utf8mb4 character set

If your mysql version>=5.5.3, you can directly upgrade utf8 to utf8mb4 character set
This 4-byte utf8 encoding is perfectly compatible The old 3-byte utf8 character set, which can directly store emoji expressions, is the best solution.
As for the performance loss caused by the increase in bytes, I have read some reviews and it is almost negligible

2. Use base64 encoding

If you cannot use utf8mb4 for some reason, you can also use base64 to save the country
Use For example, the emoji encoded by functions such as base64_encode can be directly stored in the data table of the utf8 byte set, and can be decoded when taken out.

3. Get rid of emoji expressions

Emoji expressions are a troublesome thing. Even if you can store them, they may not be displayed perfectly. On platforms other than iOS, such as PC or android. If you need to display emoji, you have to prepare a lot of emoji images and use a third-party front-end library. Even so, it may still be impossible to display because emoji images are not complete enough. In most business scenarios, emoji is not necessary. We can consider getting rid of it appropriately and save various costs

After a lot of hard google, I finally found a reliable and usable code:

// 过滤掉emoji表情
function filterEmoji($str)
{
 $str = preg_replace_callback(
   '/./u',
   function (array $match) {
    return strlen($match[0]) >= 4 ? '' : $match[0];
   },
   $str);

  return $str;
 }
Copy after login

Related recommendations:

How to generate mysql data dictionary in php

php implements word statistics function

How PHP handles binary data

The above is the detailed content of Solution to using emoji expressions in php projects. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

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

7 PHP Functions I Regret I Didn't Know Before 7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

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

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

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

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

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,

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

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

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

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

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

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 PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

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.

See all articles