$_GET variables

[S4C]

Hmm how to be sure that my $_GET['page'] is really integer..?
Thanks

[Joe Haley]

http://ca3.php.net/manual/en/function.is-int.php

is_int is your friend.

Edit:

http://ca3.php.net/manual/en/function.is-numeric.php
is_numeric

use is_numeric if the value you wish to test is of a string data type.

[trq]

Anything sent through $_GET is technically a string, but you could try to force it into being an integer by using typecasting. eg;
[code=php:0]
if (isset($_GET['page'])) {
  $page = (int) $_GET['page'];
}
[/code]
Or you might just check it using [url=http://php.net/is_numeric[/url]().

[Prismatic]

The method above will turn a string of text sent via the $_GET into 0, FYI

[S4C]

Thanks a lot guys.  ;)

[Orio]

is_int checks only if the variable is an integer.
But if the number is being transfered using GET, POST etc', the variable will be a [b]string[/b] of number/s.
So you need to use [url=http://www.php.net/manual/en/function.is-numeric.php]is_numeric()[/url].

Orio.

[ShogunWarrior]

You can use [b]is_numeric[/b], convert to [b]intval[/b] and [b]is_int[/b] after each other to check.