我昨天的那个问题就是想把一段代码封装成一个类 结果版主说没必要封装成类 那么我想问一下什么时候需要封装成类呢 什么时候需要封装成函数？我感觉封装成函数要简单一点 那为什么还有很多人写的分页类 mysql类呢 直接封装函数不好吗？
回复讨论(解决方案)
封装成函数（面向过程）和封装类（面向对象）的方法是一样的，这取决与你采取什么样的编程方式
比如你的那一问，如果已经采用了面向对象的编程方式（或是在是由某个框架），那么封装函数就显得不伦不类了。到处都是类，单独一个函数不显得孤单吗
就是楼上那个意思，看情况定。不能一概论。
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