Home Backend Development PHP Tutorial PHP使用正则表达式匹配中文,有部分匹配不出来的解决方法

PHP使用正则表达式匹配中文,有部分匹配不出来的解决方法

Jun 13, 2016 pm 12:23 PM
dump match pattern php

PHP使用正则表达式匹配中文,有部分匹配不出来的解决办法

今天在开发的时候有个需要,就是匹配出一条计价公式里的材料文本,示例:[羊脂玉价格]*[羊脂玉重量]+[白金价格]*[白金重量]+[皓石价格]*[皓石重量]+[钻石价格]*1.5*[钻石重量]+[硬金价格]*1.67*[硬金重量],要匹配出[***_价格],就是中括号内,以_价格结尾的字符串(代表材料的名称),我用的语言是PHP,写了一条正则表达式出来,代码如下:

<code class=" hljs bash"><span class="hljs-variable">$pattern</span> = <span class="hljs-string">"/\\[([^_价格]+)_价格\\]/"</span>;<span class="hljs-variable">$res</span> = preg_match_all(<span class="hljs-variable">$pattern</span>, <span class="hljs-variable">$s</span>, <span class="hljs-variable">$matches</span>);var_dump(<span class="hljs-variable">$matches</span>);</code>
Copy after login

,前面三个能匹配出来,但“钻石”一直匹配不到,非常奇怪,后面测试了一下,跟匹配的数量没有关系,因为如果把“钻石”也改成“白金”的话是能匹配出来的,改成“石”字的话也可以匹配出来,根据这种现象判断,感觉有可能是字符集的问题,有可能是默认的字符集中是没有“钻”这个字的,所以匹配不到,后面搜索了很多网友关于PHP使用正则匹配中文的文章,发现最全面的匹配方式是使用16进制的,换过来后,果然成功了,故分享出来,以飨大家,最终的代码如下:
$s = ‘[羊脂玉价格]*[羊脂玉重量]+[白金价格]*[白金重量]+[皓石价格]*[皓石重量]+[钻石价格]*1.5*[钻石重量]+[硬金价格]*1.67*[硬金重量]’;

<code class=" hljs bash"><span class="hljs-variable">$pattern</span> = <span class="hljs-string">"/\\[([\x{4e00}-\x{9fa5}]+)_价格\\]/u"</span>;<span class="hljs-variable">$res</span> = preg_match_all(<span class="hljs-variable">$pattern</span>, <span class="hljs-variable">$s</span>, <span class="hljs-variable">$matches</span>);var_dump(<span class="hljs-variable">$matches</span>);</code>
Copy after login

这样就能把羊脂玉/白金/皓石/钻石/硬金全部提取出来啦

版权声明:本文为博主原创文章,未经博主允许不得转载。

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)

Hot Topics

Java Tutorial
1662
14
PHP Tutorial
1262
29
C# Tutorial
1236
24
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 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,

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.

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

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.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

See all articles