search
HomeBackend DevelopmentPHP Tutorial这个如果用mysql语句来替换,请问要怎么写 ?

我的问题:
求一个网址截取的正则替换表达式

http://p.yiqifa.com/n?k=2mLErnws6E4H2mLErI6H2mLsWN3OrnDsWN2e6QLs1NDF6ZLErZyH2mLe6n6w3E3LMZqt6cuLUJeH&spm=1.1.1.1&t=http://www.xuansou.com/

这样一个网址,想把第二个http://前面的内容全部替换成空
也就是只想保留http://www.xuansou.com/

需要怎么弄,谢谢,我是菜鸟 
jordan102版主的正确回答我已经结帖了:
$s = 'http://p.yiqifa.com/n?k=2mLErnws6E4H2mLErI6H2mLsWN3OrnDsWN2e6QLs1NDF6ZLErZyH2mLe6n6w3E3LMZqt6cuLUJeH&spm=1.1.1.1&t=http://www.xuansou.com/';
echo preg_replace('/.+?t=/', '', $s);

以上是用于php代码的,
这个如果用mysql语句来替换,请问要怎么写 ?


回复讨论(解决方案)

截取出来就是了
SUBSTRING_INDEX(字段名, 't=', -1)

update alibaba_site set url = replace(url,SUBSTRING_INDEX(url,'t=',-1),'') where id=2452
这样的话整个字段的值全部玩完了

update alibaba_site set url = replace(url,SUBSTRING_INDEX(url,'t=',-1),'') where id=2452
这样的话整个字段的值全部玩完了

update alibaba_site set url = replace(url,SUBSTRING_INDEX(url,'t=',-1),'') where id=2452
这样的话整个字段的值全部玩完了 

update ylmf_site set url = SUBSTRING_INDEX(url,'url=',-1) where id=2452
试了这样是可以的,不过有个问题
就是最后一个网址的前面那些字符串是变化多端的
每替换一批都要修改一次

'前面那些字符串' 是指哪些?

这个最好用php处理,mysql不支持复杂的正则写法,如果觉得存储在字段的值,不满足自己,可以php写个正则替换脚本执行。

'前面那些字符串' 是指哪些?


网址1:http://click.linktech.cn/?m=idaphne&a=A100113464&l=99999&l_cd1=0&l_cd2=1&u_id=88819&tu=http%3A%2F%2Fwww.xuansou.com%2F
网址2:http://p.yiqifa.com/n?k=2mLErnws6E4H2mLErI6H2mLsWN3OrnDsWN2e6QLs1NDF6ZLErZyH2mLe6n6w3E3LMZqt6cuLUJeH&spm=1.1.1.1&t=http://www.xuansou.com/
这二个网址中的http://www.xuansou.com的前面就是指 “'前面那些字符串'  ”

怕种mysql正则好实现不,如果不好实现,用您的那个xxxx_index也是可以的,虽然麻烦了一点

update ylmf_site set url = concat('http', SUBSTRING_INDEX(url,'=http',-1)) where id=2452

Statement
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
Working with Flash Session Data in LaravelWorking with Flash Session Data in LaravelMar 12, 2025 pm 05:08 PM

Laravel simplifies handling temporary session data using its intuitive flash methods. This is perfect for displaying brief messages, alerts, or notifications within your application. Data persists only for the subsequent request by default: $request-

cURL in PHP: How to Use the PHP cURL Extension in REST APIscURL in PHP: How to Use the PHP cURL Extension in REST APIsMar 14, 2025 am 11:42 AM

The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.

Simplified HTTP Response Mocking in Laravel TestsSimplified HTTP Response Mocking in Laravel TestsMar 12, 2025 pm 05:09 PM

Laravel provides concise HTTP response simulation syntax, simplifying HTTP interaction testing. This approach significantly reduces code redundancy while making your test simulation more intuitive. The basic implementation provides a variety of response type shortcuts: use Illuminate\Support\Facades\Http; Http::fake([ 'google.com' => 'Hello World', 'github.com' => ['foo' => 'bar'], 'forge.laravel.com' =>

How to Register and Use Laravel Service ProvidersHow to Register and Use Laravel Service ProvidersMar 07, 2025 am 01:18 AM

Laravel's service container and service providers are fundamental to its architecture. This article explores service containers, details service provider creation, registration, and demonstrates practical usage with examples. We'll begin with an ove

12 Best PHP Chat Scripts on CodeCanyon12 Best PHP Chat Scripts on CodeCanyonMar 13, 2025 pm 12:08 PM

Do you want to provide real-time, instant solutions to your customers' most pressing problems? Live chat lets you have real-time conversations with customers and resolve their problems instantly. It allows you to provide faster service to your custom

PHP Logging: Best Practices for PHP Log AnalysisPHP Logging: Best Practices for PHP Log AnalysisMar 10, 2025 pm 02:32 PM

PHP logging is essential for monitoring and debugging web applications, as well as capturing critical events, errors, and runtime behavior. It provides valuable insights into system performance, helps identify issues, and supports faster troubleshoot

Explain the concept of late static binding in PHP.Explain the concept of late static binding in PHP.Mar 21, 2025 pm 01:33 PM

Article discusses late static binding (LSB) in PHP, introduced in PHP 5.3, allowing runtime resolution of static method calls for more flexible inheritance.Main issue: LSB vs. traditional polymorphism; LSB's practical applications and potential perfo

Customizing/Extending Frameworks: How to add custom functionality.Customizing/Extending Frameworks: How to add custom functionality.Mar 28, 2025 pm 05:12 PM

The article discusses adding custom functionality to frameworks, focusing on understanding architecture, identifying extension points, and best practices for integration and debugging.

See all articles

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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.