Am 20.09.2012 18:03, schrieb Jim Lucas:
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extremely outdated, unsupported and therefore insecure and inefficient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:
http://php.net/manual/en/function.ip2long.php
No, negative numbers are "true" too. Only 0 is false, so '0.0.0.0' is
the only edge case.
} else {
}
Regards,
Sebastian
Am 20.09.2012 11:14, schrieb lx:
Hello:
I want to use filter_var function by this way:
$ip = "192.168.0.1";
if( !filter_var($ip, FILTER_VALIDATE_IP) )
{
echo "IP is not valid";
}
else
{
echo "IP is valid";
}
I want to check the string $ip is IP address or not.but my PHP
version is
5.1.6.
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.
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