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tp5 自增字段并且更新字段
技术宅的博客
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主要还是看手册

tp5手册更新

Db::name('user')
 ->where('id',2) // 条件
 ->inc('age') // 增加的字段 默认1
 ->dec('grade') // 减少的字段 默认1 ->dec('grade',5) 减少 5
 ->update(['update_time'=>time()]); // 更新字段


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