PHP integer form validation

[CloudedVision]

I'm making a couple of validations for a form. One of them checks to see if the number is an integer. I figured I can just use isint(). Wrong. Since the POST data from the form is a string, isint won't work. And isnumerical() will return yes if it has a decimal point (float) but I don't want that. So how do I check to make sure a number string is an int and not a float?

[puzz]

One of the many possible solutions:

if( preg_match( '/^\d+$/', $yourStringVar ) ) { ... }

[c010depunkk]

or ctype_digit()

[able]

If you add 0 then try isint() then you should be fine.