how to handle large unique identifiers in php?

Question

How to validate id in php? I usually user intval($_GET['id']) however now I am dealing with large number and intval is returning them as 0.

$id = intval($_GET['id']);

this is one of my numbers 95315898521642

Note: I want to check is a number is > 0

Validate, as in, make sure its a number? – Harry Beasant Mar 27 '13 at 20:25 — Harry Beasant, Mar 27 '13 at 20:25
How large ids are you validate? – mkjasinski Mar 27 '13 at 20:25 — mkjasinski, Mar 27 '13 at 20:25
Yes, validate as make sure it is a number – Jaylen Mar 27 '13 at 20:25 — Jaylen, Mar 27 '13 at 20:25

score 0 · Answer 1 · edited May 23 '17 at 12:21

0

you may want to look at the long datatype, see how to have 64 bit integer on PHP? for more information.

edited May 23 '17 at 12:21

Community

answered Mar 27 '13 at 20:26

DragonZero

Michael · Accepted Answer · 2013-03-27T20:47:30.383

0

You can use filter_var with FILTER_SANITIZE_NUMBER_INT

$id = filter_var($_GET['id'], FILTER_SANITIZE_NUMBER_INT);

if (!empty($id) && '-' != $id[0])
{
  echo 'Good!';
}

edited Mar 27 '13 at 20:47

answered Mar 27 '13 at 20:29

Michael

score 0 · Answer 3 · answered Mar 27 '13 at 20:29

0

If you're dealing with integer numbers you can use ctype_digit()

answered Mar 27 '13 at 20:29

ulentini

score 0 · Answer 4 · answered Mar 27 '13 at 20:30

0

Max integer size in PHP is 9223372036854775807 for a 64 bit system and 2147483647 on a 32 bit system.

You can always try using is_numeric() to validate if the value is a number, or a regex such as preg_match('/^[0-9]+$/i', $_GET['id']).

answered Mar 27 '13 at 20:30

Ian

I am using 32bit system so my max is 2147483647 and I want to validate if then number is > 0 – Jaylen Mar 27 '13 at 20:44

4 Answers4