Test for PTR Record

[Luke - eat.lemons]

Hi all,

I need to test a IP for a PTR record and display the outcome.

The problem i have is i need to test with 2 vars.

$host = the ip
$hostmask = the hostmask

How do i use 2 vars in one function so i can call it like:

test_ptr($host, $hostmask)

Ive tested this but cant seem to get it to work.

code below. Thanks in advance

function test_ptr($host) {
if (strlen(gethostbyaddr($host))==
strlen(gethostbyname("$hostmask"))) {
$emsg = "    !!Couldent find PTR Record!!";
}
}

[Rik]

ea********@gmail.com wrote:

Hi all,

I need to test a IP for a PTR record and display the outcome.

The problem i have is i need to test with 2 vars.

$host = the ip
$hostmask = the hostmask

How do i use 2 vars in one function so i can call it like:

test_ptr($host, $hostmask)

Ive tested this but cant seem to get it to work.

code below. Thanks in advance

function test_ptr($host) {
if (strlen(gethostbyaddr($host))==
strlen(gethostbyname("$hostmask"))) {
$emsg = "    !!Couldent find PTR Record!!";
}
}

I'm not exactly sure what you're trying to do, but probably:

function test_ptr($ip,$hostname){
return (trim($ip)==trim(gethostbyname($hostname)));
}
Or, alternatively, since you seem to want an error message:
function test_ptr($ip,$hostname){
$return = (bool)(trim($ip)==trim(gethostbyname($hostname)));
if(!$return) trigger_error("{$hostname}'s ip is not {$ip}");
return $return;
}

Grtz,
--
Rik Wasmus

[Luke - eat.lemons]

Rik wrote:

ea********@gmail.com wrote:

>Hi all,

I need to test a IP for a PTR record and display the outcome.

The problem i have is i need to test with 2 vars.

$host = the ip
$hostmask = the hostmask

How do i use 2 vars in one function so i can call it like:

test_ptr($host, $hostmask)

Ive tested this but cant seem to get it to work.

code below. Thanks in advance

function test_ptr($host) {
if (strlen(gethostbyaddr($host))==
strlen(gethostbyname("$hostmask"))) {
$emsg = "    !!Couldent find PTR Record!!";
}
}

I'm not exactly sure what you're trying to do, but probably:

function test_ptr($ip,$hostname){
return (trim($ip)==trim(gethostbyname($hostname)));
}
Or, alternatively, since you seem to want an error message:
function test_ptr($ip,$hostname){
$return = (bool)(trim($ip)==trim(gethostbyname($hostname)));
if(!$return) trigger_error("{$hostname}'s ip is not {$ip}");
return $return;
}

Grtz,

I have it working now but thanks for the response! I see how your script
works, didn't think of doing it that way!

Ps. What does the (bool) do exactly (im new to php)

[Kim André Akerø]

Luke - ea********@gmail.com wrote:

Rik wrote:

ea********@gmail.com wrote:

Hi all,
>
I need to test a IP for a PTR record and display the outcome.
>
The problem i have is i need to test with 2 vars.
>
$host = the ip
$hostmask = the hostmask
>
How do i use 2 vars in one function so i can call it like:
>
test_ptr($host, $hostmask)
>
Ive tested this but cant seem to get it to work.
>
code below. Thanks in advance
>
function test_ptr($host) {
if (strlen(gethostbyaddr($host))==
strlen(gethostbyname("$hostmask"))) {
$emsg = "    !!Couldent find PTR Record!!";
}
}

I'm not exactly sure what you're trying to do, but probably:

function test_ptr($ip,$hostname){
return (trim($ip)==trim(gethostbyname($hostname)));
}
Or, alternatively, since you seem to want an error message:
function test_ptr($ip,$hostname){
$return = (bool)(trim($ip)==trim(gethostbyname($hostname)));
if(!$return) trigger_error("{$hostname}'s ip is not {$ip}");
return $return;
}

Grtz,

I have it working now but thanks for the response! I see how your
script works, didn't think of doing it that way!

Ps. What does the (bool) do exactly (im new to php)

It's a type cast that forces the variable to be evaluated as a boolean.
More about type casting can be found here:
http://php.net/language.types.type-j...es.typecasting

--
Kim André Akerø
- ki******@NOSPAMbetadome.com
(remove NOSPAM to contact me directly)

[Rik]

Kim André Akerø wrote:

Luke - ea********@gmail.com wrote:

>Rik wrote:

>>ea********@gmail.com wrote:
Hi all,

I need to test a IP for a PTR record and display the outcome.

The problem i have is i need to test with 2 vars.

$host = the ip
$hostmask = the hostmask

How do i use 2 vars in one function so i can call it like:

test_ptr($host, $hostmask)

Ive tested this but cant seem to get it to work.

code below. Thanks in advance

function test_ptr($host) {
if (strlen(gethostbyaddr($host))==
strlen(gethostbyname("$hostmask"))) {
$emsg = "    !!Couldent find PTR Record!!";
}
}

I'm not exactly sure what you're trying to do, but probably:

function test_ptr($ip,$hostname){
return (trim($ip)==trim(gethostbyname($hostname)));
}
Or, alternatively, since you seem to want an error message:
function test_ptr($ip,$hostname){
$return = (bool)(trim($ip)==trim(gethostbyname($hostname)));
if(!$return) trigger_error("{$hostname}'s ip is not {$ip}");
return $return;
}

Grtz,

I have it working now but thanks for the response! I see how your
script works, didn't think of doing it that way!

Ps. What does the (bool) do exactly (im new to php)

It's a type cast that forces the variable to be evaluated as a
boolean. More about type casting can be found here:
http://php.net/language.types.type-j...es.typecasting

Yup, it's actually somewhat useless here, as the return should already be a
bool, but for predicatbility an clearness of code I often force a certain
type of return, so I don't mess up for instance false, 0, '' etc. Better a
typecast to many then to little.

Grtz,
--
Rik Wasmus

[Luke - eat.lemons]

Rik wrote:

Kim André Akerø wrote:

>Luke - ea********@gmail.com wrote:

>>Rik wrote:
ea********@gmail.com wrote:
Hi all,
>
I need to test a IP for a PTR record and display the outcome.
>
The problem i have is i need to test with 2 vars.
>
$host = the ip
$hostmask = the hostmask
>
How do i use 2 vars in one function so i can call it like:
>
test_ptr($host, $hostmask)
>
Ive tested this but cant seem to get it to work.
>
code below. Thanks in advance
>
function test_ptr($host) {
if (strlen(gethostbyaddr($host))==
strlen(gethostbyname("$hostmask"))) {
$emsg = "    !!Couldent find PTR Record!!";
}
}
I'm not exactly sure what you're trying to do, but probably:

function test_ptr($ip,$hostname){
return (trim($ip)==trim(gethostbyname($hostname)));
}
Or, alternatively, since you seem to want an error message:
function test_ptr($ip,$hostname){
$return = (bool)(trim($ip)==trim(gethostbyname($hostname)));
if(!$return) trigger_error("{$hostname}'s ip is not {$ip}");
return $return;
}

Grtz,
I have it working now but thanks for the response! I see how your
script works, didn't think of doing it that way!

Ps. What does the (bool) do exactly (im new to php)

It's a type cast that forces the variable to be evaluated as a
boolean. More about type casting can be found here:
http://php.net/language.types.type-j...es.typecasting

Yup, it's actually somewhat useless here, as the return should already be a
bool, but for predicatbility an clearness of code I often force a certain
type of return, so I don't mess up for instance false, 0, '' etc. Better a
typecast to many then to little.

Grtz,

Thanks all, been a great help! :)