mysqli_free_result 有必要吗?

问题描述

我正在查看我的代码并读到它被推荐使用 mysqli_free_result 当你的结果对象不再需要时.但是在看到每个查询在整个脚本中反复输出到 $result 变量后，我想知道 mysqli_free_result 是否真的有必要.似乎每次运行查询时 $result 变量已经被清除并设置为新结果.只是好奇是否有人对此有任何意见.

I was looking through my code and read that it was recommened to use mysqli_free_result when your result object is not needed anymore. But after seeing that each query is outputed to the $result variable repeatedly throughout the script, I am wondering if mysqli_free_result would really be necessary. Seems like each time a query is ran the $result variable is already being wiped clean and set to a new result. Just curious if anyone has any input on this.

推荐答案

这从来都不是绝对必要的，但密切关注您正在使用的资源并知道何时不再需要它们是一种很好的做法.

It’s never strictly necessary, but it's good practice to keep an eye on resources you’re using and know when you don't need them anymore.

添加那行额外的代码非常简单，所以每次你完成结果集时我都会这样做.它还有一个额外的好处，即在您完成资源后让阅读您的代码的人清楚.

It’s pretty minimal effort to drop in that extra line of code, so I would just do it every time you're finished with a result set. It has the added bonus of making it clear to someone reading your code when you’ve finished with a resource.

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