TaxPrice Class

TaxPrice.php

<?php
/**
 * TaxPrice.php
 * Created by: koen
 * Date: 18-4-15
 * Time: 12:41 
 */

class TaxPrice {

    private $withoutTax;
    private $withTax;
    private $taxPrice;
    private $taxRate = 21;

    /**
     * Construct TaxPrice and set its properties
     *
     * @param int $price
     * @param bool $isTaxPrice whether the price given is including or excluding taxes
     * @param null $taxRate sets the tax rate
     */
    public function __construct($price, $isTaxPrice = true, $taxRate = null){

        if(!is_null($taxRate))
            $this->taxRate = $taxRate;

        if($isTaxPrice){
            $this->withTax = $price;
            $this->taxPrice = ($this->withTax / (100 + $this->taxRate) * $this->taxRate);
            $this->withoutTax = $this->withTax - $this->taxPrice;
        }else {
            $this->withoutTax = $price;
            $this->taxPrice = $this->withoutTax * ($this->taxRate / 100);
            $this->withTax = $this->withoutTax + $this->taxPrice;
        }

    }

    /**
     * Getter for price including taxes
     *
     * @param bool $decimal whether to send full float or rounded
     * @return int
     */
    public function  withTax($decimal = false){
        if($decimal)
            return $this->withTax;
        return round($this->withTax,2);
    }

    /**
     * Getter for price excluding taxes
     *
     * @param bool $decimal whether to send full float or rounded
     * @return int
     */
    public function withoutTax($decimal = false){
        if($decimal)
            return $this->withoutTax;
        return round($this->withoutTax,2);
    }

    /**
     * Getter for amount of tax price on the given tax rate
     *
     * @param bool $decimal whether to send full float or rounded
     * @return int
     */
    public function getTaxPrice($decimal = false){
        if($decimal)
            return $this->taxPrice;
        return round($this->taxPrice,2);
    }
}