WMPRO, WMMINI FW >= 1.0 WMMEGA FW >= 2.0

Return 1 if the variable is a float

Check if a variable or value is a floating point number

variable: Variable or expression to be evaluated

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() - Return 1 if the variable is an integer

is_numeric() - Return 1 if the value is numeric (integer, float or numeric string)

is_string() - Return 1 if the variable is a string

is_array() - Return 1 if the variable is an array

isset() - Return 1 if the variable exists

uPHP Variable Types and Limits