Posted by Joe Scylla on 12/06/07 15:27

Remo wrote:
> Hi everyone,
> I'm a php newbie. I'm sorry for the trivial question:
>
> If I have two string variables like:
>
> $Media_A = "8.00"
> $Media_B = "8.86"
> and I try to use this statement in order to make a subtraction
> like:
> $Media_B - $Media_A, result is 0!
> Why????
>
> It's like two strings has been converted into integers.
> I say that, why, if I set $Media_B="9.86", new result is 1.
>
> This example uses strings because values coming from a table where
> field are defined varchar(7).
> Is there a way to cast those variables and calculate the correct
> differences between those two variables values.
>
> thanx for help
> Remo

You can cast a variable to a type by using:
$result = (float) $string;

See also here (chapter: Type Casting):
http://www.php.net/manual/en/language.types.type-juggling.php

Joe

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