Hide parts of an IP

Discussion in 'PHP' started by viperxx, Jun 26, 2007.

0
  1. #1
    my website currently display comments made from guests and have their username as their IP using <?php echo $_SERVER['REMOTE_ADDR']; ?>
    this shows their complete IP, how do i make it so it shows something like 71.XX.XXX.432
     
    viperxx, Jun 26, 2007 IP
  2. KalvinB

    KalvinB Peon

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    #2
    You could explode the IP string on the periods so you get an array with four entries. You then display $ip[0] . ".xxx.xxx." . $ip[3]
     
    KalvinB, Jun 26, 2007 IP
  3. nico_swd

    nico_swd Prominent Member

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    #3 
    
function hide_ip($ipaddress)
{
	return preg_replace(
		'/\.(\d{1,3})\.(\d{1,3})\./e',
		'"." . str_repeat("X", strlen("$1")) . "." . str_repeat("X", strlen("$2")) . "."',
		$ipaddress
	);
}
    PHP:
    Usage example:
    
echo hide_ip('192.168.1.2'); // Prints: 192.XXX.X.2
    PHP:
     
    nico_swd, Jun 26, 2007 IP