View script in php

Hello. I have a php script. Its task is to check the proxy.

For six months it worked well, and about 2 days ago several functions fell off. And all this is as strange as possible, because usually the functions fall off if the script refers to some sites that have changed their design or functionality, and then the "muzzle" of the script itself flew off. I honestly dont understand why, given that I havent even touched the code, I hope you can tell by the code.

(Ill explain what the script does, if necessary)

The task is to see what happened to the script, whether it can be fixed.

I dont have the script in my hands, it is on the server, so I will immediately skin access to the server. youll need to go in and see.