OAMM WordPress to Fraction Calculation

fractions.php

  public function to_fraction($float) {
		$whole = floor( $float );
		$decimal = $float - $whole;

        if ($decimal == 0) return $whole;

        $valid_decimals = array(
	        '1/8' => 0.125,
	        '1/4' => 0.25,
	        '1/3' => 0.333,
	        '1/2' => 0.5,
	        '2/3' => 0.666,
	        '3/4' => 0.75,
	        '1'   => 1
        );

        asort($valid_decimals);

        $fraction = $this->nearest_value($decimal,$valid_decimals);
        $fraction = array_search($fraction, $valid_decimals);

        return ($whole == 0 ? '' : $whole . ' ') . $fraction;
	}

    public function nearest_value($value, $array) {
        if (array_search($value, $array)) {
            return $value;
        } else {
            $array[] = $value;
            sort($array);
            $key = array_search($value, $array);
            if ($key == 0) { return $array[$key+1]; }
            if ($key == sizeof($array)-1) { return $array[$key-1]; }
            $dist_to_ceil = $array[$key+1]-$value;
            $dist_to_floor = $value-$array[$key-1];
            if ($dist_to_ceil <= $dist_to_floor) {
                return $array[$key+1];
            } else {
                return $array[$key-1];
            }
        }
    }