will file_exist() php function cause high server load ?

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.

Answer 2

The exact same question has been asked here before.

The short answer was: no.