PHP $_SERVER['REMOTE_ADDR'] empty

Question

Somehow $_SERVER[\'REMOTE_ADDR\'] returns an empty string, i have the same code (as part of a script) running on multiple servers and it works everywhere else,

Answer 1

Yes it's possible for REMOTE_ADDR to be empty. so if you want you can use this code that I use to get the ip based on HTTP_X_FORWARDED_FOR

I'm checking REMOTE_ADDR first as it is more reliable and sometimes HTTP_X_FORWARDED_FOR can be spoofed by users