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Home Backend Development PHP Tutorial 写数字字典时,想要设置上传多张图片的字段,应该怎么写?大家帮帮忙,急用,谢谢!

写数字字典时,想要设置上传多张图片的字段,应该怎么写?大家帮帮忙,急用,谢谢!

Jun 20, 2016 pm 12:25 PM

上图了,大神门看看应该怎么写?


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建议弄一张关联表分出去 主表和关联表采取一对多关系 原因如下
1.如果在主表总存储图片,图片数量不固定,那么字段长度你也没法确定,那么字段类型不好设计 用varchar呢还是text呢?varchar可能不够用 text类型则必须输入,不能使用默认值
2.如果你用text类型存储多个图片,那么无论你是使用json还是穿行化还是字符串的存储方式,那么当修改增加删除的时候,你都需要将数据重新拿出来处理一遍 追加/修改/删除后再存储进去麻烦

建立关联表则可省去以上麻烦 具体表结构如下
upload_cgxt_images
id  int(10) primary key auto_increment
cgxt_id int(10) defaule 0
image varchar(255) default ''
对关联表的操作都是对单条的操作

楼上的分析很到位,就这么办吧。

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