PHP Function for calculating weight watcher's point values.

WeightWatchersCalculatorFn.php

<?php

function calculate ($calories, $fiber, $fat) {
	$points_from_fat = $fat / 12;
	if ($fiber = 0) {
		$fiber_caloric_reduction = 0;
	} elseif ($fiber < 4) {
		$fiber_caloric_reduction = $fiber * 10;
	} elseif ($fiber > 4) {
		$fiber_caloric_reduction = 40;
	}
	if ($calories < $fiber_caloric_reduction) {
		$calories = 0;
	} elseif ($calories > $fiber_caloric_reduction) {
		$calories = $calories - $fiber_caloric_reduction;
	}
		
	$result = ($calories / 50) + $points_from_fat;
		
	$result = round($result);
		
	return $result;
}

?>