There is always intval() - Not sure if this is what you were looking for...
example: -
$floatValue = 4.5;
echo intval($floatValue); // Returns 4
It won't round off the value to an integer, but will strip out the decimal and trailing digits, and return the integer before the decimal.
Here is some documentation for this: - http://php.net/manual/en/function.intval.php