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html - thinkPHP if标签怎么判断图片存在不存在??

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Jun 06, 2016 pm 08:18 PM

htmlphp

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>{$v.type}</td>                    
                    <td class="text-c">                    
                    <img  src="/static/imghwm/default1.png" data-src="__ROOT__/{$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>

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>{$v.type}</td>                    
                    <td class="text-c">                    
                    <img  src="/static/imghwm/default1.png" data-src="__ROOT__/{$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>

假设你的$v['images'] 没有图片时为空
则判断 <if condition="$v['images'] neq '' "><img src="/static/imghwm/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/imghwm/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/imghwm/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>

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