How do you check variables.

[Anon]

I don't understand the gettype() function or any of the other check variable functions. Forms by default make everything a string so how can you check if an entry a user put in the field is an integer?

gettype() always returns a string and the search on this board doesn't seem to be working.

Is there a simple example of working code where someone uses a gettype() for a form field that will tell you if it is an integer or not? Someone said before I would need to use a regular expression to get the job done. What is that. Everything I tried doesn't work.

Here is a field. A user enters something and hits submit. How do you check if the variable is an integer or not.

<input type="text" name="books" size="20">

Thanks.

[morphy]

try with is_int(), is_double(), etc etc..
but it seems to me that they dont work as good as i hope...

[spider_man]

if (ereg("^{[0-9]+$",$name))}
echo '$name is not empty and it's an integer';

That's a regular expression.

Follow the white rabbit
-Morpheous