convert IP to 10 digit decimal number

[Aurous]

Hi guys I need help in converting IP in php.

for example, if we have this IP: 123.456.789.012

I would like to make it as 012.789.456.123

and then convert it to a 10 digit decimal number. This is for a hack I am working on and will be greatful if anyone can help.

Thanks

Aurous

[Marco van Herwaarden]

Why 10 digits, why not 12?

[Aurous]

Originally Posted by MarcoH64

Why 10 digits, why not 12?

http://livinginternet.com/i/iw_dns_alias.htm

[filburt1]

<a href="http://us4.php.net/manual/en/function.ip2long.php" target="_blank">http://us4.php.net/manual/en/function.ip2long.php</a>

[Aurous]

Originally Posted by filburt1

http://us4.php.net/manual/en/function.ip2long.php

ya I understood the ip2long function. How about reversing the IP address before I use the function?

[Marco van Herwaarden]

How about:

PHP Code:

$reversedlong = ip2long(implode(".",array_reverse(explode(".", $ip)))); 


[filburt1]

That's what I was going to suggest as well.

[Marco van Herwaarden]

Yes i know you suggested it but he had trouble reversing it.

[Aurous]

Originally Posted by MarcoH64

Yes i know you suggested it but he had trouble reversing it.

Actually the way I need to reverse is as follows:

If the IP is suppose: 123.456.78.90

It should reverse it to 90.78.456.123

They way you suggest would make it 321.654.87.09 (i think), which I dont want to do.

basically if the IP I need to get this -> 3092948441 when this is entered as IP -> 217.165.90.184

This is an example.

[Marco van Herwaarden]

Don't think too much

It would already do that, i a review with the ip you now provided i found out that the sprintf is really neccesary to avoid negative numbers.

PHP Code:

<?php
$ip = "217.165.90.184";
echo "<br />ip: $ip";
$reversed = implode(".",array_reverse(explode(".", $ip)));
echo "<br />reversed: $reversed";
$reversedlong = sprintf("%u",ip2long(implode(".",array_reverse(explode(".", $ip)))));
echo "<br />reversedlong: $reversedlong";
?>

Will produce:

ip: 217.165.90.184
reversed: 184.90.165.217
reversedlong: 3092948441