On 09/20/2012 02:35 AM, Sebastian Krebs wrote:
Plaseplease update... 5.1.6 is from 2006! I read the "it's required",
but I can't imagine _anything_ that it's worth it to use such an
extremely outdated, unsupported and therefore insecure and inefficient
version... You know: There are 3 (!) new minor versions available right
now (5.2, 5.3 and 5.4).

However: Regarding your concrete problem I guess you can use ip2long()

if (ip2long($ip)) {

I would suggest a modification to this.

if ( ip2long($ip) !== false ) {

I suggest this because IP to long will return negative numbers for half the IP range. Therefor 50% of your possible results would be considered false when in fact they are valid IPs.

See Example #2 on this page:

} else {


Am 20.09.2012 11:14, schrieb lx:
I want to use filter_var function by this way:

$ip = "";

if( !filter_var($ip, FILTER_VALIDATE_IP) )
echo "IP is not valid";
echo "IP is valid";

I want to check the string $ip is IP address or not.but my PHP version is
and I know the filter_var requires at least PHP version 5.2.0.
so, Any other function in PHP 5.1.6 can slove this work and replace the
filter_var function ?

Thank you, I'm a new one, so I don't know much about PHP documentation.

By the way, The PHP version is required. so I can't upgrade it.

Jim Lucas


PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Reply via email to