WMPRO, WMMINI FW >= 1.0 WMMEGA FW >= 2.0
Check if a variable is a float
Check to see if a variable or value is of type float (a floating point number)
$variable: Variable or expression to be evaluated
Integer: 1 (true) if float, 0 (false) if not a float
<? $x=1; print(is_float($x)); // outputs 0, $x is an integer $y=1.0; print(is_float($y)); // outputs 1, $y is a float $z="1.0"; print(is_float($z)); // outputs 0, $z is a string ?>
This function checks ONLY the type of the variable, not the data that it holds!
To test if a variable contains a number or is a numeric string (such as form input, which is always a string), you should use is_numeric().
is_int() - Check if a variable is an integer
is_numeric() - Check if a value is numeric (int, float or numeric string)
is_string() - Check if a variable is a string
is_array() - Check if a variable is an array
isset() - Check if a variable exists