Check if string is numeric ip

Check if string is numeric ip

Checks if a string is a valid numeric ip, not a valid internet ip ! range =>

0.0.0.0 - 255.255.255.255

PHP Example:

PHP code:

<?php

/*
* PHP scripts by Ofloo all rights reserved.
*
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* Email: support[at]ofloo.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

function isIpaddr ($ipaddr)
{
if (ereg("^([0-9]{1,3})x2E([0-9]{1,3})x2E([0-9]{1,3})x2E([0-9]{1,3})$", $ipaddr, $digit))
{
if (($digit[1] <= 255) && ($digit[2] <= 255) && ($digit[3] <= 255) && ($digit[4] <= 255))
{
return TRUE;
}
}

return FALSE;
}

?>