264 lines
6.5 KiB
PHP
264 lines
6.5 KiB
PHP
<?php
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/**
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* Performs tax calculations
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*
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* @class woocommerce_tax
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* @package WooCommerce
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* @category Class
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* @author WooThemes
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*/
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class woocommerce_tax {
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var $total;
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var $rates;
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/**
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* Get the current tax class
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*
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* @return array
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*/
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function woocommerce_tax() {
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$this->rates = $this->get_tax_rates();
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}
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/**
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* Get an array of tax classes
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*
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* @return array
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*/
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function get_tax_classes() {
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$classes = get_option('woocommerce_tax_classes');
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$classes = explode("\n", $classes);
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$classes = array_map('trim', $classes);
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$classes_array = array();
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if (sizeof($classes)>0) foreach ($classes as $class) :
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if ($class) $classes_array[] = $class;
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endforeach;
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return $classes_array;
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}
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/**
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* Get the tax rates as an array
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*
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* @return array
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*/
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function get_tax_rates() {
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$tax_rates = get_option('woocommerce_tax_rates');
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$tax_rates_array = array();
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if ($tax_rates && is_array($tax_rates) && sizeof($tax_rates)>0) foreach( $tax_rates as $rate ) :
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if ($rate['class']) :
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$tax_rates_array[$rate['country']][$rate['state']][$rate['class']] = array( 'rate' => $rate['rate'], 'shipping' => $rate['shipping'] );
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else :
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// Standard Rate
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$tax_rates_array[$rate['country']][$rate['state']]['*'] = $rate['rate'] = array( 'rate' => $rate['rate'], 'shipping' => $rate['shipping'] );
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endif;
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endforeach;
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return $tax_rates_array;
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}
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/**
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* Searches for a country / state tax rate
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*
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* @param string country
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* @param string state
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* @param object Tax Class
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* @return int
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*/
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function find_rate( $country, $state = '*', $tax_class = '' ) {
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$rate['rate'] = 0;
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if (isset($this->rates[ $country ][ $state ])) :
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if ($tax_class) :
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if (isset($this->rates[ $country ][ $state ][$tax_class])) :
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$rate = $this->rates[ $country ][ $state ][$tax_class];
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endif;
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else :
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$rate = $this->rates[ $country ][ $state ][ '*' ];
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endif;
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elseif (isset($this->rates[ $country ][ '*' ])) :
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if ($tax_class) :
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if (isset($this->rates[ $country ][ '*' ][$tax_class])) :
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$rate = $this->rates[ $country ][ '*' ][$tax_class];
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endif;
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else :
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$rate = $this->rates[ $country ][ '*' ][ '*' ];
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endif;
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endif;
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return $rate;
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}
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/**
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* Get the current taxation rate using find_rate()
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*
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* @param object Tax Class
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* @return int
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*/
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function get_rate( $tax_class = '' ) {
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/* Checkout uses customer location, otherwise use store base rate */
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if ( defined('WOOCOMMERCE_CHECKOUT') && WOOCOMMERCE_CHECKOUT ) :
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$country = woocommerce_customer::get_country();
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$state = woocommerce_customer::get_state();
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$rate = $this->find_rate( $country, $state, $tax_class );
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return $rate['rate'];
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else :
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return $this->get_shop_base_rate( $tax_class );
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endif;
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}
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/**
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* Get the shop's taxation rate using find_rate()
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*
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* @param object Tax Class
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* @return int
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*/
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function get_shop_base_rate( $tax_class = '' ) {
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$country = woocommerce_countries::get_base_country();
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$state = woocommerce_countries::get_base_state();
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$rate = $this->find_rate( $country, $state, $tax_class );
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return $rate['rate'];
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}
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/**
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* Get the tax rate based on the country and state
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*
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* @param object Tax Class
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* @return mixed
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*/
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function get_shipping_tax_rate( $tax_class = '' ) {
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if (defined('WOOCOMMERCE_CHECKOUT') && WOOCOMMERCE_CHECKOUT) :
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$country = woocommerce_customer::get_country();
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$state = woocommerce_customer::get_state();
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else :
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$country = woocommerce_countries::get_base_country();
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$state = woocommerce_countries::get_base_state();
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endif;
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// If we are here then shipping is taxable - work it out
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if ($tax_class) :
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// This will be per item shipping
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$rate = $this->find_rate( $country, $state, $tax_class );
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if (isset($rate['shipping']) && $rate['shipping']=='yes') :
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return $rate['rate'];
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else :
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// Get standard rate
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$rate = $this->find_rate( $country, $state );
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if (isset($rate['shipping']) && $rate['shipping']=='yes') return $rate['rate'];
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endif;
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else :
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// This will be per order shipping - loop through the order and find the highest tax class rate
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$found_rates = array();
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$found_shipping_rates = array();
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// Loop cart and find the highest tax band
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if (sizeof(woocommerce_cart::$cart_contents)>0) : foreach (woocommerce_cart::$cart_contents as $item) :
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if ($item['data']->data['tax_class']) :
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$found_rate = $this->find_rate( $country, $state, $item['data']->data['tax_class'] );
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$found_rates[] = $found_rate['rate'];
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if (isset($found_rate['shipping']) && $found_rate['shipping']=='yes') $found_shipping_rates[] = $found_rate['rate'];
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endif;
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endforeach; endif;
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if (sizeof($found_rates) > 0 && sizeof($found_shipping_rates) > 0) :
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rsort($found_rates);
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rsort($found_shipping_rates);
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if ($found_rates[0] == $found_shipping_rates[0]) :
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return $found_shipping_rates[0];
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else :
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// Use standard rate
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$rate = $this->find_rate( $country, $state );
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if (isset($rate['shipping']) && $rate['shipping']=='yes') return $rate['rate'];
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endif;
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else :
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// Use standard rate
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$rate = $this->find_rate( $country, $state );
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if (isset($rate['shipping']) && $rate['shipping']=='yes') return $rate['rate'];
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endif;
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endif;
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return 0; // return false
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}
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/**
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* Calculate the tax using the final value
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*
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* @param int Price
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* @param int Taxation Rate
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* @return int
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*/
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function calc_tax( $price, $rate, $price_includes_tax = true ) {
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// To avoid float roudning errors, work with integers (pence)
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$price = round($price * 100, 0);
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$math_rate = $rate;
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if ($price_includes_tax) :
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$math_rate = ($math_rate / 100) + 1;
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//$price_ex = round($price / $math_rate);
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//$tax_amount = round($price - $price_ex);
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$tax_amount = $price - ( $price / $math_rate);
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else :
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$tax_amount = $price * ($rate/100);
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endif;
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// Round to the nearest pence
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$tax_amount = round($tax_amount);
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$tax_amount = $tax_amount / 100; // Back to pounds
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//return number_format($tax_amount, 4, '.', '');
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return number_format($tax_amount, 2, '.', '');
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}
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/**
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* Calculate the shipping tax using the final value
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*
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* @param int Price
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* @param int Taxation Rate
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* @return int
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*/
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function calc_shipping_tax( $price, $rate ) {
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$rate = round($rate, 4);
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$tax_amount = $price * ($rate/100);
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return round($tax_amount, 2);
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}
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} |