将file_exist（）php函数导致高服务器负载？

Question

i am trying to check if user uploaded his or her avatar image and i use file_exist() php function to check if the user avatar image exist or not

will this cause any server load problem with massive traffic websites ?

thanks

Answer 1

No it will not, here is the documentation for file_exists. It also caches the results, so that further improves performance.