No. the point of using this is to allow only several people to access that page, so they will get access again if their IP changes.
Lets say I have a admincp control panel, I only want 3 people to access that panel so I tell them to go into this page (which is the .php page), once they complete the verification they will be granted access to the admincp (by automatically adding their IP to the whitelist) I find this useful because instead of me adding their IPs manually they can just do it from that page.