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# gethostbyaddr

(PHP 3 <= 3.0.18, PHP 4 >= 4.0.0)

gethostbyaddr -- Get the Internet host name corresponding to a given IP address

## Description

``string gethostbyaddr` (string ip_address)`

Returns the host name of the Internet host specified by `ip_address`. If an error occurs, returns `ip_address`.

See also gethostbyname().

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