php5 converts 64 bit integer to double - how force 64-bit?

Question

in php5, pass a 64bit integer, 1707541557936130 through GET, but it shows value of 1.7075415579361E+15

how can I force php to use large integers as integers, not as float

when I shift << apparently the result of that is int32 as well, not int64

is there a way to globally say use int64?

There is [GMP](http://php.net/manual/book.gmp.php) and there is [BC Math](http://php.net/manual/book.bc.php). At least GMP should help you here. — hakre, Aug 01 '12 at 13:44

score 4 · Accepted Answer · answered Jan 02 '12 at 14:25

4

PHP supports 64bit integers only on 64bit systems. In both cases integers, that are larger than PHP_INT_MAX, are converted to floats. see manual.

Try this code:

<?php
$i=1707541557936130;
var_dump($i);    
echo PHP_INT_MAX;

answered Jan 02 '12 at 14:25

heiko

that's a bummer, esp with PHP's automatic conversion. – cc young Jan 02 '12 at 15:14

1 Answers1