Unsigned int to signed in php

Question

It appears, that in 32bit OS ip2long returns signed int, and in 64bit OS unsigned int is returned.

My application is working on 10 servers, and some are

Answer 1

-Misunderstood problem, see Paul Dixon's answer above.

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64bit unsigned integers are not technically supported in PHP5. It will use the native type. To convert to a 32bit signed int from a 64bit signed int without losing the high bit, you could mask and then type cast the output:

$ip_int = ip2long($ip);
if (PHP_INT_SIZE == 8) // 64bit native
{
  $temp_int = (int)(0x7FFFFFFF & $ip_int);
  $temp_int |= (int)(0x80000000 & ($ip_int >> 32));
  $ip_int = $temp_int;
}

On a 64 bit system, printing this value ($ip_int) will display an 'unsigned' integer since we've removed the high bit. However this should allow you to take the output and store it how you wish.