Table of Contents
批量过滤MYSQL数据库内站外链接和图片程序代码
Home Database Mysql Tutorial PHP批量过滤MYSQL数据库内站外链接和图片_MySQL

PHP批量过滤MYSQL数据库内站外链接和图片_MySQL

Jun 01, 2016 pm 01:16 PM
picture search engine database Website optimization

因发现站内很多引用站外文章的链接失效,产生大量的死链接,对于搜索引擎来说是极不友好的,很不利于网站优化,所以站内添加了站外链接过滤功能,对于新加的文章,在添加入库时就自动增加rel="nofollow"标签,见文章《增加对站点内容外部链接的过滤》。因考虑如果是在前台调用数据时过滤的话,对网页打开速度,服务器能耗都增加许多,所以就采用的是入库时添加。

那么,原来已有的数据怎么办?现在需要对原来的数据也进行此操作,如果是在后台一条条编辑来实现,即使只需要点一下,工程量也是很大的,那么就需要一个批处理操作。

写一个批处理程序即可,经调试,测试,以下的程序可很好的替换原来数据库里面的外部链接和外部图片

如,站点是http://www.ledaokj.com

一篇文章里有一个链接是 http://www.53sj.net/article-6-1.html

一个图片是 http://www.53sj.net/data/attachment/block/d3/d34780d1fca3d6b7960a7eb7a2c4c0d3.jpg

经过批处理操作后

其代码变成

PHP批量过滤MYSQL数据库内站外链接和图片_MySQL

 

批量过滤MYSQL数据库内站外链接和图片程序代码

global $config,$db;$sql = "SELECT `id`,`content` FROM `{$db->prefix}article`"; $a_list = $db->query($sql); $domain = $config['url'];$domain = substr($domain,0,strlen($domain)-1);  //修正当前域名网址 foreach($a_list as $a){$content = content_nofollow($a['content'],$domain);update_a($a['id'],addslashes($content));}exit; function update_a($id,$content){global $config,$db; $sql = "update `{$db->prefix}article` SET `content`='{$content}' where `id`={$id}";if($db->execute($sql)){echo $id.'更新成功!
';}} //外部链接增加nofllow $content 内容 $domain 当前网站域名function content_nofollow($content,$domain){ preg_match_all('/href="(.*?)"/',$content,$matches); if($matches){  foreach($matches[1] as $val){   if( strpos($val,$domain)===false ) $content=str_replace('href="'.$val.'"', 'href="'.$val.'" rel="external nofollow" ',$content);  } } preg_match_all('/src="http:(.*?)"/',$content,$matches); if($matches){  foreach($matches[1] as $val){   if( strpos($val,$domain)===false ) $content=str_replace('src="http:'.$val.'"', 'src="http:'.$val.'" rel="external nofollow" ',$content);  } } return $content;} 原文链接:PHP批量过滤MYSQL数据库内站外链接和图片

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)

iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos Jul 18, 2024 am 05:48 AM

Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

How does Hibernate implement polymorphic mapping? How does Hibernate implement polymorphic mapping? Apr 17, 2024 pm 12:09 PM

Hibernate polymorphic mapping can map inherited classes to the database and provides the following mapping types: joined-subclass: Create a separate table for the subclass, including all columns of the parent class. table-per-class: Create a separate table for subclasses, containing only subclass-specific columns. union-subclass: similar to joined-subclass, but the parent class table unions all subclass columns.

An in-depth analysis of how HTML reads the database An in-depth analysis of how HTML reads the database Apr 09, 2024 pm 12:36 PM

HTML cannot read the database directly, but it can be achieved through JavaScript and AJAX. The steps include establishing a database connection, sending a query, processing the response, and updating the page. This article provides a practical example of using JavaScript, AJAX and PHP to read data from a MySQL database, showing how to dynamically display query results in an HTML page. This example uses XMLHttpRequest to establish a database connection, send a query and process the response, thereby filling data into page elements and realizing the function of HTML reading the database.

Detailed tutorial on establishing a database connection using MySQLi in PHP Detailed tutorial on establishing a database connection using MySQLi in PHP Jun 04, 2024 pm 01:42 PM

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

How to handle database connection errors in PHP How to handle database connection errors in PHP Jun 05, 2024 pm 02:16 PM

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.

Convert PDF to JPG format (fast) Convert PDF to JPG format (fast) Apr 19, 2024 am 08:13 AM

Documents in PDF format are widely used in various fields, in the digital age, but sometimes we need to convert them to JPG image format to meet specific needs. As well as solutions to common problems, this article will introduce in detail how to use practical tools to convert PDF files into high-quality, lossless JPG images. Choose the appropriate PDF to JPG conversion tool as well as its characteristics and applicable scenarios, desktop software and mobile applications, and introduce several common PDF to JPG conversion tools, including online conversion. An introduction to online converters such as Adobe Acrobat Online, including operating steps, detailed introduction to common online converters, Smallpdf, Zamzar, etc., upload restrictions and conversion quality, etc. Desktop software recommendations and usage Ni

How to use database callback functions in Golang? How to use database callback functions in Golang? Jun 03, 2024 pm 02:20 PM

Using the database callback function in Golang can achieve: executing custom code after the specified database operation is completed. Add custom behavior through separate functions without writing additional code. Callback functions are available for insert, update, delete, and query operations. You must use the sql.Exec, sql.QueryRow, or sql.Query function to use the callback function.

How to connect to remote database using Golang? How to connect to remote database using Golang? Jun 01, 2024 pm 08:31 PM

Through the Go standard library database/sql package, you can connect to remote databases such as MySQL, PostgreSQL or SQLite: create a connection string containing database connection information. Use the sql.Open() function to open a database connection. Perform database operations such as SQL queries and insert operations. Use defer to close the database connection to release resources.

See all articles