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gethostbyaddr

Contents

(PHP 4, PHP 5, PHP 7)

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

Description

gethostbyaddr ( string $ip_address ) : string

Returns the host name of the Internet host specified by ip_address.

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Parameters

ip_address

The host IP address.

PHP: gethostbyaddr - Manual Home of Manuel PHP  Contents Haut

Return Values

Returns the host name on success, the unmodified ip_address on failure, or FALSE on malformed input.

PHP: gethostbyaddr - Manual Home of Manuel PHP  Contents Haut

Examples

Example #1 A simple gethostbyaddr() example

<?php
$hostname = gethostbyaddr($_SERVER['REMOTE_ADDR']);

echo $hostname;
?>

PHP: gethostbyaddr - Manual Home of Manuel PHP  Contents Haut

See Also

  • gethostbyname() - Get the IPv4 address corresponding to a given Internet host name
  • gethostbynamel() - Get a list of IPv4 addresses corresponding to a given Internet host name

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