可以批量提取内容第一张图为标题图，仅供参考，修改之前先备份。
使用方法
后台-系统-备份与恢复数据-执行sql语句
UPDATE phome_ecms_news
JOIN phome_ecms_news_data_1
ON phome_ecms_news.id = phome_ecms_news_data_1.id
SET phome_ecms_news.titlepic = (select reverse(substring(reverse(substring_index(substring(newstext,locate('src=',newstext)+6),'"',1)),2,255)) from phome_ecms_news_data_1 where id=phome_ecms_news.id)
WHERE phome_ecms_news.titlepic='';记得修改数据表名
UPDATE phome_ecms_news SET ispic=1 WHERE titlepic<>'';
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