请问一个数据库链接类的疑问
如图所示：
图中红线地方的语句可以不要吗？
我看了一些文章，有的有，有的没有。
回复讨论(解决方案)
可以不要，它会使用上一个打开的连接。
建议保留，代码更严谨
我从来都是不要的
如果你整个页面都是连同一个数据库的，可以不要，如果多于一个，请保留，这样方便你查错。
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