Explore how to improve PHP recursion efficiency _ PHP Tutorial

Explore how to improve PHP recursion efficiency. In actual code programming, we will find the CGI mode on my IIS server. the result of my PHP recursive efficiency test is: the cost of non-recursive calls: 0.036401009559631 recursive calling in actual code programming, we will find that in my IIS server (CGI) mode, My PHP recursive efficiency test result is:

Cost of non-recursive calls: 0.036401009559631
Recursive call cost: 0.053439617156982

On my Apache server, my test result is:

Cost of non-recursive calls: 0.022789001464844
Recursive call cost: 0.014809131622314

The results of PHP recursion efficiency are the opposite, while the PHP version is the same.

It seems that the PHP recursion efficiency needs to be analyzed in detail.

In the CGI mode on my IIS server, the result of my PHP recursive efficiency test is: the cost of non-recursive calls: 0.036401009559631 recursive calls...