[thelist] PHP - strings and integers

[**1st Vamp**]

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You could always perform a reversable substraction or some on it, like:
$num++;
$num--;
If the contents of the variable are numerical this will result in a numerical check after this point returning true, while if its a string it'll return false. I'm sure
there's an easier method, but this works for me usually.

- - Vamp

Monday, April 08, 2002, 3:48:53 PM, Lachlan Cannon wrote:

> I'm currently trying to test if a year passed as part of a query string is a
> numeral or not. I am using urls with slashes instead of a query string, and
> breaking it up in php, so it comes originally as a string. This presents a
> problem, because I can't test to see if the number passed for a year is a
> numeral or not, since it came as a string. I can't just convert it across to
> be a numeral - I want to give an error page on incorrect values entered. How
> can I test to see if it really is a number?

> Thanks

> Lach

> <tip author="Lachlan" type="PHP">
> A 'stable' version of PHP-GTK has been released and can be downloaded at
> http://gtk.php.net . PHP-GTK can be used to make cross platform GUI
> applications using PHP.
> </tip>

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