Table of Contents
回复内容:
Home Backend Development PHP Tutorial html - thinkPHP if标签 怎么判断图片存在不存在??

html - thinkPHP if标签 怎么判断图片存在不存在??

Jun 06, 2016 pm 08:18 PM
html php

后台的新闻列表 如果新闻中没有图片 则让其不显示图片 用if标签怎么实现

<code>                    <td>{$i}</td>
                    <td>{$v.title}</td>
                    <td>{$v.type}</td>                    
                    <td class="text-c">                    
                    <img  src="/static/imghw/default1.png" data-src="__ROOT__/{$v.images}" class="lazy"    style="max-width:90%"  style="max-width:90%" alt="html - thinkPHP if标签 怎么判断图片存在不存在??" >
                    </td>
                    <td>{$v.dateandtime}</td></code>
Copy after login
Copy after login

回复内容:

后台的新闻列表 如果新闻中没有图片 则让其不显示图片 用if标签怎么实现

<code>                    <td>{$i}</td>
                    <td>{$v.title}</td>
                    <td>{$v.type}</td>                    
                    <td class="text-c">                    
                    <img  src="/static/imghw/default1.png" data-src="__ROOT__/{$v.images}" class="lazy"    style="max-width:90%"  style="max-width:90%" alt="html - thinkPHP if标签 怎么判断图片存在不存在??" >
                    </td>
                    <td>{$v.dateandtime}</td></code>
Copy after login
Copy after login

假设你的$v['images'] 没有图片时为空
则判断 <if condition="$v['images'] neq '' "><img src="/static/imghw/default1.png" data-src="__ROOT__/{$v.images}" class="lazy" style="max-width:90%" style="max-width:90%" alt="html - thinkPHP if标签 怎么判断图片存在不存在??" ></if>

要是你的$v['images'] 没有图片时有一个默认值(例如: '/public/index/')
则判断 <if condition="$v['images'] neq '/public/index/' "><img src="/static/imghw/default1.png" data-src="__ROOT__/{$v.images}" class="lazy" style="max-width:90%" style="max-width:90%" alt="html - thinkPHP if标签 怎么判断图片存在不存在??" ></if>

这个不用thinkPHP吧,用PHP就能判断吧?

<code><?php if(isset($v.images)&&!empty($v.images)):?>
    <img  src="/static/imghw/default1.png" data-src="__ROOT__/{$v.images}" class="lazy"    style="max-width:90%"  style="max-width:90%" alt="html - thinkPHP if标签 怎么判断图片存在不存在??" >
<?php endif;?></code>
Copy after login
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 Article Tags

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)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

CakePHP Date and Time

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

CakePHP Project Configuration

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

CakePHP File upload

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

CakePHP Routing

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

Discuss CakePHP

HTML Table Layout HTML Table Layout Sep 04, 2024 pm 04:54 PM

HTML Table Layout

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

How To Set Up Visual Studio Code (VS Code) for PHP Development

See all articles