PHP and forms

[apw]

Hello again .. My question and problem is with handling forms.  Most input with formr in my game deals with numbers but if i gets a player who wants to be funny and starts putting letters or even numbers and letters or other odd stray characters that doesnt belong how do i tell the code to handle this?  I have strip_tags already in place and when decimals are used the form rounds.  Thanks

[Maq]

When you check it in PHP use the is_numeric($var) function.  It returns a boolean.