How to modify thumbnails in DedeCMS version 5.1
DedeCMS 5.1 版缩略图怎么修改?
以前曾收录过这篇文章[Dedecms生成漂亮整齐的缩略图],我做了下尝试,生成缩略图的时候还是会有问题。今天看到这个文章,做个补充。
推荐学习:织梦cms
勾选 “提取第一张图片为缩略图” 实际是将第一张图当作缩略图 并没有生成带"_lit"的小图
修改文件:\dede\action\article_add_action.php
先看原代码
代码如下:
//自动获取缩略图 if($autolitpic==1 && $litpic==''){ $litpic = GetDDImgFromBody($body); }
大概意思应该就是“缩略图=获取图像从主题内容”
也就是上面说的实际是第一张原图 这就是问题所在
参考了4.X里提取缩略图代码,更改为:
代码如下:
//自动获取缩略图-改 if($autolitpic==1 && $litpic==''){ $cfg_medias_dir = str_replace('/','\/',$cfg_medias_dir); $picname = preg_replace("/.+?".$cfg_medias_dir."(.*)( |\"|').*$/isU",$cfg_medias_dir."$1",$body); if(eregi("\.(jpg|gif|png)$",$picname)){ if(ereg("_lit\.",$picname)) $litpic = $picname; else $litpic = GetDDImage('ddfirst',$picname,0); } }
同理\dede\action\article_eidt_action.php更改为:
代码如下:
//自动获取缩略图-改 if($autolitpic==1 && empty($litpic)){ $cfg_medias_dir = str_replace('/','\/',$cfg_medias_dir); $picname = preg_replace("/.+?".$cfg_medias_dir."(.*)( |\"|').*$/isU",$cfg_medias_dir."$1",$body); if(eregi("\.(jpg|gif|png)$",$picname)){ if(ereg("_lit\.",$picname)) $litpic = $picname; else $litpic = GetDDImage('ddfirst',$picname,0); } }
然后将这两个文件 复制覆盖到\dede\下。
OK!这样就能打到勾选“提取第一张...”生成缩略图的目的了。
缩略图变形 参考[Dedecms生成漂亮整齐的缩略图]
需修改文件:\include\inc_photograph.php
找到:($ni,$im,0,0,0,0,$ftoW,$ftoH,$srcW,$srcH); 共三处。
改为:($ni,$im,0,0,$src_X,$src_Y,$ftoW,$ftoH,$srcW,$srcH);
修改了缩图函数,就能在原图中截取居中的、最大面积的符合自定义缩略图长宽比列的一部分生成缩略图。
The above is the detailed content of How to modify thumbnails in DedeCMS version 5.1. For more information, please follow other related articles on the PHP Chinese website!

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

Empire CMS template download location: Official template download: https://www.phome.net/template/ Third-party template website: https://www.dedecms.com/diy/https://www.0978.com.cn /https://www.jiaocheng.com/Installation method: Download template Unzip template Upload template Select template

Dedecms is an open source Chinese CMS system that provides content management, template system and security protection. The specific usage includes the following steps: 1. Install Dedecms. 2. Configure the database. 3. Log in to the management interface. 4. Create content. 5. Set up the template. 6. Manage users. 7. Maintain the system.

Accurate and reliable dedecms conversion tool evaluation report With the rapid development of the Internet era, website construction has become one of the necessary tools for many companies and individuals. In website construction, using a content management system (CMS) can manage website content and functions more conveniently and efficiently. Among them, dedecms, as a well-known CMS system, is widely used in various website construction projects. However, sometimes we are faced with the need to convert the dedecms website to other formats, in which case we need to use a conversion tool

How to upload local videos using Dedecms? Prepare the video file in a format that is supported by Dedecms. Log in to the Dedecms management backend and create a new video category. Upload video files on the video management page, fill in the relevant information and select the video category. To embed a video while editing an article, enter the file name of the uploaded video and adjust its dimensions.

Template replacement can be implemented in Dedecms through the following steps: modify the global.cfg file and set the required language pack. Modify the taglib.inc.php hook file and add support for language suffix template files. Create a new template file with a language suffix and modify the required content. Clear Dedecms cache.

Learning dedecms encoding conversion function is not complicated. Simple code examples can help you quickly master this skill. In dedecms, the encoding conversion function is usually used to deal with problems such as Chinese garbled characters and special characters to ensure the normal operation of the system and the accuracy of data. The following will introduce in detail how to use the encoding conversion function of dedecms, allowing you to easily cope with various encoding-related needs. 1.UTF-8 to GBK In dedecms, if you need to convert UTF-8 encoded string to G

DedeCMS is an open source content management system that has some potential vulnerabilities and security risks: 1. SQL injection vulnerability. Attackers can perform unauthorized operations or obtain sensitive data by constructing malicious SQL query statements; 2. File Upload vulnerability, attackers can upload files containing malicious code to the server to execute arbitrary code or obtain server permissions; 3. Sensitive information leakage; 4. Unauthenticated vulnerability exploitation.

Dedecms is an open source CMS that can be used to create various types of websites, including: news websites, blogs, e-commerce websites, forums and community websites, educational websites, portals, other types of websites (such as corporate websites, personal websites, photo album websites, video sharing website)
