Question

"mysqli_free_result"这个函数有用吗？

mysqli_result::freemysqli_free_result 貌似没什么意义吧？可能我理解不到位吧。

Answer 1

mysqli_result::free -- mysqli_free_result — Frees the memory associated with a result这是英语的意思，中文的大概已是是 释放内存与结果了

Answer 2

回复 3# heyubingfeng 意思我知道，我就是感觉一个脚本语言，没有必要把内存拿出来说事，不知道这里特意提出来，是不是有什么特别含义。

Answer 3

貌似还是有用的。 http://www.php.net/manual/en/mysqli.query.php Either the constant MYSQLI_USE_RESULT or MYSQLI_STORE_RESULT depending on the desired behavior. By default, MYSQLI_STORE_RESULT is used. If you use MYSQLI_USE_RESULT all subsequent calls will return error Commands out of sync unless you call mysqli_free_result() With MYSQLI_ASYNC (available with mysqlnd), it is possible to perform query asynchronously. mysqli_poll() is then used to get results from such queries.