Method getPriceItemsChangedByAttributes

public function getPriceItemsChangedByAttributes(&$priceP, $attributes, $price, &$item, $ajax = 0)
{
    $paramsC = PhocacartUtils::getComponentParameters();
    $display_unit_price = $paramsC->get('display_unit_price', 1);
    $fullAttributes = array();
    // Array of integers only
    $thinAttributes = array();
    // Array of full objects (full options object)
    if ($ajax == 1) {
        $fullAttributes = PhocacartAttribute::getAttributeFullValues($attributes);
        $thinAttributes = $attributes;
    } else {
        $fullAttributes = $attributes;
        $thinAttributes = PhocacartAttribute::getAttributesSelectedOnly($attributes);
    }
    // Stock Calculation
    // 0 ... Main Product
    // 1 ... Product Variations
    // 2 ... Advanced Stock Management
    // 3 ... Advanced Stock and Price Management
    if ($item->stock_calculation == 0 || $item->stock_calculation == 1) {
        // Price changes even when stock calculation = main product
        if (!empty($fullAttributes)) {
            foreach ($fullAttributes as $k => $v) {
                if (!empty($v->options)) {
                    foreach ($v->options as $k2 => $v2) {
                        // Options:
                        // a) STANDARD LOAD - we search for default values only to count them
                        // b) AJAX LOAD - we search for selected values only (in this case attribute array only includes selected)
                        // so if standard load - at start - we count only default values but when ajax reloads - e.g. some
                        // options were selected/deselected - we get only array with selected value so we count them all
                        // EXAMPLE
                        // Product A has option 1 and it is set as default at standard load - se we count only default_value
                        // But when user add some new option, e.g. option 2 - we get this array (option1, option2) per ajax
                        // and we count all the items in this array
                        // STANDARD LOAD happens at rendering the page (including default values)
                        // AJAX LOAD happens when user select or deselect attributes of options and ajax will be called
                        // See: administrator\components\com_phocacart\libraries\phocacart\stock\stock.php
                        // function getStockItemsChangedByAttributes - similar behaviour
                        if ($ajax == 1 || $ajax == 0 && isset($v2->default_value) && $v2->default_value == 1) {
                            if (isset($v2->title) && isset($v2->amount) && isset($v2->operator)) {
                                $priceA = $price->getPriceItems($v2->amount, $item->taxid, $item->taxrate, $item->taxcalculationtype, $item->taxtitle);
                                if ($v2->operator == '-') {
                                    $priceP['netto'] -= $priceA['netto'];
                                    $priceP['brutto'] -= $priceA['brutto'];
                                    $priceP['tax'] -= $priceA['tax'];
                                    //$this->correctMinusPrice($priceP);
                                } else {
                                    if ($v2->operator == '+') {
                                        $priceP['netto'] += $priceA['netto'];
                                        $priceP['brutto'] += $priceA['brutto'];
                                        $priceP['tax'] += $priceA['tax'];
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    } else {
        if ($item->stock_calculation == 3) {
            // Advanced Stock Management
            $k = PhocacartProduct::getProductKey((int) $item->id, $thinAttributes);
            $dataASM = PhocacartAttribute::getCombinationsDataByKey($k);
            if (isset($dataASM['price']) && $dataASM['price'] > 0) {
                $priceP = $price->getPriceItems($dataASM['price'], $item->taxid, $item->taxrate, $item->taxcalculationtype, $item->taxtitle);
            }
        }
    }
    // Standard Price - changed - we need to update it but only in case the price is not zero
    $priceP['nettoformat'] = isset($priceP['netto']) ? $price->getPriceFormat($priceP['netto']) : '';
    $priceP['bruttoformat'] = isset($priceP['brutto']) ? $price->getPriceFormat($priceP['brutto']) : '';
    $priceP['taxformat'] = isset($priceP['tax']) ? $price->getPriceFormat($priceP['tax']) : '';
    // Unit price
    $priceP['base'] = '';
    $priceP['baseformat'] = '';
    if (isset($item->unit_amount) && $item->unit_amount > 0 && isset($item->unit_unit) && (int) $display_unit_price > 0) {
        $priceP['base'] = $priceP['brutto'] / $item->unit_amount;
        $priceP['baseformat'] = $price->getPriceFormat($priceP['base']) . '/' . $item->unit_unit;
    }
}