/**
* Converts a string containing an IP address into its integer value and return string representation.
* @param $ip (string) IP address to convert.
* @return int IP address as string.
* @since 9.0.033 (2009-11-03)
*/
function getIpAsString($ip)
{
$ip = getIpAsInt($ip);
return sprintf('%.0f', $ip);
}
/**
* Check if user's IP is valid over test IP range
* @param $user_ip (int) user's IP address in expanded IPv6 format.
* @param $test_ips (int) comma separated list of valid test IP addresses. The '*' character may be used to indicate any number in IPv4 addresses. Intervals must be specified using the '-' character.
* @return true if IP is valid, false otherwise
*/
function F_isValidIP($user_ip, $test_ips)
{
if (empty($user_ip) or empty($test_ips)) {
return false;
}
// convert user IP to number
$usrip = getIpAsInt($user_ip);
// build array of valid IP masks
$test_ip = explode(',', $test_ips);
// check user IP against test IP masks
while (list($key, $ipmask) = each($test_ip)) {
if (strrpos($ipmask, '*') !== false) {
// old range notation using IPv4 addresses and '*' character.
$ipv4 = explode('.', $ipmask);
$ipv4_start = array();
$ipv4_end = array();
foreach ($ipv4 as $num) {
if ($num == '*') {
$ipv4_start[] = 0;
$ipv4_end[] = 255;
} else {
$num = intval($num);
if ($num >= 0 and $num <= 255) {
$ipv4_start[] = $num;
$ipv4_end[] = $num;
} else {
$ipv4_start[] = 0;
$ipv4_end[] = 255;
}
}
}
// convert to IPv6 address range
$ipmask = getNormalizedIP(implode('.', $ipv4_start)) . '-' . getNormalizedIP(implode('.', $ipv4_end));
}
if (strrpos($ipmask, '-') !== false) {
// address range
$ip_range = explode('-', $ipmask);
if (count($ip_range) !== 2) {
return false;
}
$ip_start = getIpAsInt($ip_range[0]);
$ip_end = getIpAsInt($ip_range[1]);
if ($usrip >= $ip_start and $usrip <= $ip_end) {
return true;
}
} elseif ($usrip == getIpAsInt($ipmask)) {
// exact address comparison
return true;
}
}
return false;
}