熊掌号改造中对图片数量的要求要么是一张要么是三张，这里采用函数判断就显得相对轻松了代码运行结果如下：
源代码【实际运用直接改成自己相关的配置信息即可】：
<script type="application/ld+json"> {
"@context": "https://zhanzhang.baidu.com/contexts/cambrian.jsonld",
"@id": "https://blog.weguiding.com{dede:field name='arcurl'/}",
"appid": "1587107621134358",
"title":"{dede:field.title/}",
"images":[{dede:field.body runphp='yes'}$str=strip_tags("@me","
<img />"); preg_match_all("/src="?(.*?)"/",$str,$ereg); $urlarr=$ereg[1];if (count($urlarr) >=3){@me = ' "'.$urlarr[0].'","'.$urlarr[1].'","'.$urlarr[2].'"';} else{@me =' "'.$urlarr[0].'"';} {/dede:field.body} ],"description": "{dede:field name='description' function='html2text(@me)'/}","pubDate": "{dede:field name='pubdate' function='strftime("%Y-%m-%dT%H:%M:%S","@me")' /}" }</script>
