is_real

The is_real() function in PHP is simply an alias of is_float() - for full details see the is_float() function.

is_float

The is_float() function allows you to check if a particular variable is a float (type).

PHP

$number = 6.5;
var_dump( is_float($number) );
// => true

Ruby

number = 6.5;
puts number.is_a?(Float);
# => true