Got a quick question about isNum function

[jamesjackson]

<? if (isNum($srp)) 
   { 
            echo $f_savings; 
        } 
   else 
       {   

       echo "0"; 
    } 
?>

getting an error

Fatal error: Call to undefined function: isnum()

not sure what the problem is.. any help would be appreciated..

[laserlight]

The problem is just as the PHP interpreter says: isnum() is an undefined function.

I think that likely candidates are: [man]is_numeric/man, [man]ctype_digit/man, [man]is_int/man and related functions.

[jamesjackson]

thanks laserlight... i'm learning so as to not become a "luser"