PHP Integer Question - i'm a newbie

[hayesbro2]

I am writing a simple php script for one of my classes. Currently my variables seem to be all in floating point. How do I define a variable as being an integer and have it reject all other non-integer values. I'm new with this stuff so any help would be appreciated. If you need any more information let me know. Thanks!

[laserlight]

You typecast to an integer when necessary, using
(int)$variable
or [man]settype/man
or use [man]intval/man

[hayesbro2]

Also in my php script i have a user input area, input type = "text. I am creating a form that will be processed, but I want to have it check the input values to make sure they are integers. If they are not integers I want it to bring up some kind of error message. Any suggestions? Thanks!

[laserlight]

Use [man]ctype_digit/man, in that case.