Determining the Hostname of a Remote IP : gethostbyaddr « DNS « PHP

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PHP » DNS » gethostbyaddr

Determining the Hostname of a Remote IP


 

<?php



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



    if($hostname === $_SERVER['REMOTE_ADDR']) {



        echo "The host name could not be resolved.<BR/>\n";



    } else {



        echo "The host name is: $hostname<BR/>\n";



    }

?>

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Using gethostbyaddr() to Get a Hostname

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