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
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

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

AI Hentai Generator
Generate AI Hentai for free.

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

Long URLs, often cluttered with keywords and tracking parameters, can deter visitors. A URL shortening script offers a solution, creating concise links ideal for social media and other platforms. These scripts are valuable for individual websites a

Following its high-profile acquisition by Facebook in 2012, Instagram adopted two sets of APIs for third-party use. These are the Instagram Graph API and the Instagram Basic Display API.As a developer building an app that requires information from a

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-

This is the second and final part of the series on building a React application with a Laravel back-end. In the first part of the series, we created a RESTful API using Laravel for a basic product-listing application. In this tutorial, we will be dev

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' =>

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.

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

The 2025 PHP Landscape Survey investigates current PHP development trends. It explores framework usage, deployment methods, and challenges, aiming to provide insights for developers and businesses. The survey anticipates growth in modern PHP versio
