After failing to find this in my searches, I thought I'd ask
here: Is there a php function that can tell me if an IP address
falls within a range?

Something like this:

$result = is_in_ip_range($_SERVER['REMOTE_ADDR'], '78.157.128.0/19');

I need this for denying access to my web contact form from certain IP
ranges.

I can write my own, but wondered if there's something in the massive
php function library that I overlooked.

-A

On Jul 5, 7:40 pm, a...@spamcop.net (axlq) wrote:

After failing to find this in my searches, I thought I'd ask
here: Is there a php function that can tell me if an IP address
falls within a range?
>
Something like this:
>
$result = is_in_ip_range($_SERVER['REMOTE_ADDR'], '78.157.128.0/19');
>
I need this for denying access to my web contact form from certain IP
ranges.
>
I can write my own, but wondered if there's something in the massive
php function library that I overlooked.
>
-A

There's a PEAR class - Net_IPv4. There are probably other
implementations too - try phpclasses, freshmeat or google.

C.

On Jul 5, 9:40 pm, a...@spamcop.net (axlq) wrote:

After failing to find this in my searches, I thought I'd ask
here: Is there a php function that can tell me if an IP address
falls within a range?
>
Something like this:
>
$result = is_in_ip_range($_SERVER['REMOTE_ADDR'], '78.157.128.0/19');
>
I need this for denying access to my web contact form from certain IP
ranges.
>
I can write my own, but wondered if there's something in the massive
php function library that I overlooked.
>
-A

You need to use string manipulation functions to process second
parameter, however your
Function parameters should be like this:
ip_func($_SERVER['REMOTE_ADDR'],<IP TO START>,<IP TO STOP>);

Ex. ip_func($_SERVER['REMOTE_ADDR'] , 78.157.128.0 , 78.157.128.255 );

In article <3ccab4d5-05b3-4502-ac8b-693543188b81@z72g2000hsb.googlegroups.com>,
Betikci Boris <pardust@gmail.comwrote:

>On Jul 5, 9:40 pm, a...@spamcop.net (axlq) wrote:

>Function parameters should be like this:
>ip_func($_SERVER['REMOTE_ADDR'],<IP TO START>,<IP TO STOP>);
>
>Ex. ip_func($_SERVER['REMOTE_ADDR'] , 78.157.128.0 , 78.157.128.255 );

Oh, that's right. If I passed the second two arguments as strings,
I could simply use lexical comparison to determine if the first
argument is between them.

Thanks.
-A

axlq wrote:

>
After failing to find this in my searches, I thought I'd ask
here: Is there a php function that can tell me if an IP address
falls within a range?
>
Something like this:
>
$result = is_in_ip_range($_SERVER['REMOTE_ADDR'], '78.157.128.0/19');

Make the second parameter two parameters then the check if $IP is
between $fromIP and $toIP is very easy.

function is_in_ip_range($IP, $fromIP, $toIP)

{
if( (ip2long($fromIP) < ip2long($IP)) && (ip2long($IP) < ip2long($toIP))
)
{return TRUE}
else
{return FALSE}
}


Bye!

axlq wrote:

In article <3ccab4d5-05b3-4502-ac8b-693543188b81@z72g2000hsb.googlegroups.com>,
Betikci Boris <pardust@gmail.comwrote:

>

>
Oh, that's right. If I passed the second two arguments as strings,
I could simply use lexical comparison to determine if the first
argument is between them.
>
Thanks.
-A
>

Is 101.01.01.01 within the range of 98.98.98.98 and 110.110.110.110?
Passed as a string, it is not.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================

Jerry Stuckle wrote:

axlq wrote:

>
Is 101.01.01.01 within the range of 98.98.98.98 and 110.110.110.110?
Passed as a string, it is not.

In the context of IP ranges it is not, but more of a problem is:

78.157.128.2 would appear to be in the range 78.157.128.18 to 78.157.128.22

In article <4870E738.2F90CDEA@nowhere.invalid>,
Anonymous <anonymous@nowhere.invalidwrote:

>axlq wrote:

>
>Make the second parameter two parameters then the check if $IP is
>between $fromIP and $toIP is very easy.
>
>function is_in_ip_range($IP, $fromIP, $toIP)
>
>{
>if( (ip2long($fromIP) < ip2long($IP)) && (ip2long($IP) < ip2long($toIP))
>)
{return TRUE}
>else
{return FALSE}
>}

ip2long - THAT's what I was looking for! Thanks!

I can even do masking with that, for ranges specified like my 2nd
argument above.

-Alex

On Jul 6, 4:34 pm, a...@spamcop.net (axlq) wrote:

In article <3ccab4d5-05b3-4502-ac8b-693543188...@z72g2000hsb.googlegroups.com>,
Betikci Boris <pard...@gmail.comwrote:
>

>

>
Oh, that's right. If I passed the second two arguments as strings,
I could simply use lexical comparison to determine if the first
argument is between them.
>
Thanks.
-A

No - that's only going to work for 8/16/32 bit subnets.

C.