gethostbyaddress vs $_SERVER['remote_host']

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Hi everyone,

i would like to know if there is a difference between gethostbyaddress
method and $_SERVER['remote_host'].

furthermore i hve a little problem using ip address resolution. Some ip

address are resolved other not. Why?  

Tnx, bye

Re: gethostbyaddress vs $_SERVER['remote_host']

For the second question - IP addresses that don't have reverse dns
entries, cannot be resolved.

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