'".$id."' '$id' 这两种写法有啥区别啊？
insert into biao1(id) values（'".$id."'）
insert into biao1(id) values（'$id'）
这两种写法有啥区别啊？我测试了一下，好像都可以啊？盼高手解答
------解决方案--------------------
可以说没区别。。看你喜欢怎么写。。。
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