Codeigniter:$query->free_result() when using active record?

Question

在我从CodeIgniter模型中的活动记录查询完成结果集后，我应该使用$query->free_result()还是ActiveRecord会自动执行此操作？

Answer 1

PHP will clean up everything after your script is done. However, if you have lots of queries in, say, a loop, the results will not be cleaned up after each iteration.

So, if you run lots of queries in a loop, you probably will want to free_result() to clear up memory. Otherwise, it's not necessary. See here for details:

https://www.codeigniter.com/user_guide/database/results.html