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

Return 1 if the variable is a float

Return 1 (true) if the variable or value is a floating point number, otherwise return 0 (false)

variable: Variable or expression to be tested to see if it is a float

1 if float, 0 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
?>

To test if a variable is a number or 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 string)

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

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

uPHP Variable Types and Limits