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Trying to solve a loop on woocommerce
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1.00/5 (1 vote)
I'm still a novice in WC, I've built an extra option to select for how many days you would like to book the service, in addition i need to make a calculation on different price, for example: if the customer will select 2x products it will cost €10 ( €5 per product ) for 2 days will be 20 as need to double it for each day,

I've built a function like that, but the frontend do not show an update price at the check out :



function booking_variations() {
    echo '<table class="booking-variations" cellspacing="0">
            <tbody>
                <tr>
                    <td class="label"><label for="num_giorni" name="option_num_days">Per quanti giorni?</label></td>
                    <td class="value">
                        <select name="option_num_giorni"/> 
                            <option name="option_num_day_one" value="1">1</option>
                            <option name="option_num_day_two" value="2">2</option>
                            <option name="option_num_day_three" value="3">3</option>
                            <option name="option_num_day_four" value="4">4</option>
                            <option name="option_num_day_five" value="5">5</option>
                            <option name="option_num_day_six" value="6">6</option>
                            <option name="option_num_day_seven" value="7">7</option>
                            <option name="option_num_day_eight" value="8">8</option>
                            <option name="option_num_day_nine" value="9">9</option>
                            <option name="option_num_day_ten" value="10">10</option>
                        </select>
                    </td>
                </tr>                             
            </tbody>
        </table>';
}
add_action( 'woocommerce_before_add_to_cart_button', 'booking_variations' );

function save_booking_variations( $cart_item_data, $product_id ){
    if( isset( $_POST['option_num_day_one'] ) &&
    $_POST['option_num_day_one'] === '1' ) {
        $cart_item_data[ "add_num_fee_one" ] = "1";
    }
    
    if( isset( $_POST['option_num_day_two'] ) &&
    $_POST['option_num_day_two'] === '2' ) {
        $cart_item_data[ "add_num_fee_two" ] = "2";
    }
    
    if( isset( $_POST['option_num_day_three'] ) &&
    $_POST['option_num_day_three'] === '3' ) {
        $cart_item_data[ "add_num_fee_three" ] = "3";
    }
    
    if( isset( $_POST['option_num_day_four'] ) &&
    $_POST['option_num_day_four'] === '4' ) {
        $cart_item_data[ "add_num_fee_four" ] = "4";
    }
    
    if( isset( $_POST['option_num_day_five'] ) &&
    $_POST['option_num_day_five'] === '5' ) {
        $cart_item_data[ "add_num_fee_five" ] = "5";
    }
    
    if( isset( $_POST['option_num_day_six'] ) &&
    $_POST['option_num_day_six'] === '6' ) {
        $cart_item_data[ "add_num_fee_six" ] = "6";
    }
    
    if( isset( $_POST['option_num_day_seven'] ) &&
    $_POST['option_num_day_seven'] === '7' ) {
        $cart_item_data[ "add_num_fee_seven" ] = "7";
    }
    
    if( isset( $_POST['option_num_day_eight'] ) &&
    $_POST['option_num_day_eigh'] === '8' ) {
        $cart_item_data[ "add_num_fee_eight" ] = "8";
    }
    
    if( isset( $_POST['option_num_day_nine'] ) &&
    $_POST['option_num_day_nine'] === '9' ) {
        $cart_item_data[ "add_num_fee_nine" ] = "9";
    }
    
    if( isset( $_POST['option_num_day_ten'] ) &&
    $_POST['option_num_day_ten'] === '10' ) {
        $cart_item_data[ "add_num_fee_ten" ] = "10";
    }
    
    return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations', 99, 2 );

function calculate_num_days_fee( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_one = 0;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_one"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_one);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_one);
                }
            }
        }
    }

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_two = 10;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_two"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_two);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_two);
                }
            }
        }
    }

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_three = 15;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_three"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_three);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_three);
                }
            }
        }
    }

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_four = 20;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_four"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_four);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_four);
                }
            }
        }
    }

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_five = 25;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_five"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_five);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_five);
                }
            }
        }
    }
    
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_six = 30;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_six"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_six);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_six);
                }
            }
        }
    }

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_seven = 35;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_seven"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_seven);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_seven);
                }
            }
        }
    }

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_eight = 40;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_eight"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_eight);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_eight);
                }
            }
        }
    }

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_nine = 45;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_nine"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_nine);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_nine);
                }
            }
        }
    }

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_ten = 50;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_ten"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_ten);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_ten);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee', 99 );

function render_meta_on_cart_and_checkout( $cart_data, $cart_item = null ) {
    $meta_items = array();
    if( !empty( $cart_data ) ) {
        $meta_items = $cart_data; // <- ? missing error ?
    }
    if( isset( $cart_item["add_num_fee_one"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "1");
    }
    if( isset( $cart_item["add_num_fee_two"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "2");
    }
    if( isset( $cart_item["add_num_fee_three"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "3");
    }
    if( isset( $cart_item["add_num_fee_four"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "4");
    }
    if( isset( $cart_item["add_num_fee_five"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "5");
    }
    if( isset( $cart_item["add_num_fee_six"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "6");
    }
    if( isset( $cart_item["add_num_fee_seven"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "7");
    }
    if( isset( $cart_item["add_num_fee_eight"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "8");
    }
    if( isset( $cart_item["add_num_fee_nine"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "9");
    }
    if( isset( $cart_item["add_num_fee_ten"] ) ) {
        $meta_items[] = array( "name" => "Numero Giorni", "value" => "10");
    }
    return $meta_items;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_on_cart_and_checkout', 99, 2 );

function days_order_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_one"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '1');
    }
    if( isset( $values["add_num_fee_two"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '2');
    }
    if( isset( $values["add_num_fee_thre"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '3');
    }
    if( isset( $values["add_num_fee_four"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '4');
    }
    if( isset( $values["add_num_fee_five"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '5');
    }
    if( isset( $values["add_num_fee_six"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '6');
    }
    if( isset( $values["add_num_fee_seven"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '7');
    }
    if( isset( $values["add_num_fee_eight"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '8');
    }
    if( isset( $values["add_num_fee_nine"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '9');
    }
    if( isset( $values["add_num_fee_ten"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '10');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_meta_handler', 99, 3);



Any suggestions guys ?
Many thanks

What I have tried:

<pre>//
// ****************************
// ******* WooC SUPPORT *******
// ****************************
//

// Enable extra variable
function booking_variations() {
    echo '<table class="booking-variations" cellspacing="0">
            <tbody>
                <tr>
                    <td class="label"><label for="num_giorni" name="option_num_days">Per quanti giorni?</label></td>
                    <td class="value">
                        <select name="option_num_giorni"> 
                            <option name="option_num_day_one" value="1">1</option>
                            <option name="option_num_day_two" value="2">2</option>
                            <option name="option_num_day_three" value="3">3</option>
                            <option name="option_num_day_four" value="4">4</option>
                            <option name="option_num_day_five" value="5">5</option>
                            <option name="option_num_day_six" value="6">6</option>
                            <option name="option_num_day_seven" value="7">7</option>
                            <option name="option_num_day_eight" value="8">8</option>
                            <option name="option_num_day_nine" value="9">9</option>
                            <option name="option_num_day_ten" value="10">10</option>
                        </select>
                    </td>
                </tr>                             
            </tbody>
        </table>';
}
add_action( 'woocommerce_before_add_to_cart_button', 'booking_variations' );

// ############
// ############
// ############

function save_booking_variations_one( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_one'] ) &&
    $_POST['option_num_day_one'] === '1' ) {
        $cart_item_data[ "add_num_fee_one" ] = "1";
    }
    return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_one', 99, 2 );
    
function save_booking_variations_two( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_two'] ) &&
    $_POST['option_num_day_two'] === '2' ) {
        $cart_item_data[ "add_num_fee_two" ] = "2";
    }
    return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_two', 99, 2 );
    
function save_booking_variations_three( $cart_item_data, $product_id ){
    
    if( isset( $_POST['option_num_day_three'] ) &&
    $_POST['option_num_day_three'] === '3' ) {
        $cart_item_data[ "add_num_fee_three" ] = "3";
    }
    return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_three', 99, 2 );

function save_booking_variations_four( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_four'] ) &&
    $_POST['option_num_day_four'] === '4' ) {
        $cart_item_data[ "add_num_fee_four" ] = "4";
    }
    return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_four', 99, 2 );
    
function save_booking_variations_five( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_five'] ) &&
    $_POST['option_num_day_five'] === '5' ) {
        $cart_item_data[ "add_num_fee_five" ] = "5";
    }
        return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_five', 99, 2 );

function save_booking_variations_six( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_six'] ) &&
    $_POST['option_num_day_six'] === '6' ) {
        $cart_item_data[ "add_num_fee_six" ] = "6";
    }
        return $cart_item_data;

}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_six', 99, 2 );

function save_booking_variations_seven( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_seven'] ) &&
    $_POST['option_num_day_seven'] === '7' ) {
        $cart_item_data[ "add_num_fee_seven" ] = "7";
    }
    return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_seven', 99, 2 );

function save_booking_variations_eight( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_eight'] ) &&
    $_POST['option_num_day_eigh'] === '8' ) {
        $cart_item_data[ "add_num_fee_eight" ] = "8";
    }
        return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_eight', 99, 2 );

function save_booking_variations_nine( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_nine'] ) &&
    $_POST['option_num_day_nine'] === '9' ) {
        $cart_item_data[ "add_num_fee_nine" ] = "9";
    }
    return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_nine', 99, 2 );

function save_booking_variations_ten( $cart_item_data, $product_id ){

    if( isset( $_POST['option_num_day_ten'] ) &&
    $_POST['option_num_day_ten'] === '10' ) {
        $cart_item_data[ "add_num_fee_ten" ] = "10";
    }
        return $cart_item_data;
}
add_filter( 'woocommerce_add_cart_item_data', 'save_booking_variations_ten', 99, 2 );


// ############
// ############
// ############

function calculate_num_days_fee_one( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_one = 0;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_one"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_one);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_one);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_one', 99 );

function calculate_num_days_fee_two( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_two = 10;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_two"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_two);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_two);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_two', 99 );


function calculate_num_days_fee_three( $cart_object ) {

    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_three = 15;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_three"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_three);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_three);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_three', 99 );


function calculate_num_days_fee_four( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_four = 20;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_four"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_four);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_four);
                }
            }
        }
    }
}

add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_four', 99 );

function calculate_num_days_fee_five( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_five = 25;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_five"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_five);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_five);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_five', 99 );

function calculate_num_days_fee_six( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_six = 30;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_six"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_six);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_six);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_six', 99 );

function calculate_num_days_fee_seven( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_seven = 35;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_seven"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_seven);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_seven);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_seven', 99 );

function calculate_num_days_fee_eight( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_eight = 40;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_eight"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_eight);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_eight);
                }
            }
        }
    }
}    
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_eight', 99 );

function calculate_num_days_fee_nine( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_nine = 45;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_nine"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_nine);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_nine);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_nine', 99 );

function calculate_num_days_fee_ten( $cart_object ) {
    if( !WC()->session->__isset( "reload_checkout" )) {
        $add_price_ten = 50;
        foreach ( WC()->cart->get_cart() as $key => $value ) {
            if( isset( $value["add_num_fee_ten"] ) ) {
                if( method_exists( $value['data'], "set_price" ) ) {
                    $orgPrice = floatval( $value['data']->get_price() );
                    $value['data']->set_price( $orgPrice + $add_price_ten);
                } else {
                    $orgPrice = floatval( $value['data']->price );
                    $value['data']->price = ( $orgPrice + $add_price_ten);
                }
            }
        }
    }
}
add_action( 'woocommerce_before_calculate_totals', 'calculate_num_days_fee_ten', 99 );

// ############
// ############
// ############

function render_meta_one_on_cart_and_checkout( $cart_data, $cart_item = null ) {
    $meta_items_one = array();
    if( !empty( $cart_data ) ) {
        $meta_items_one = $cart_data; // <- ? missing error ?
    }
    if( isset( $cart_item["add_num_fee_one"] ) ) {
        $meta_items_one[] = array( "name" => "Numero Giorni", "value" => "1");
    }
    return $meta_items_one;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_one_on_cart_and_checkout', 99, 2 );

function render_meta_two_on_cart_and_checkout( $cart_data, $cart_item = null ) {
    $meta_items_two = array();
    if( !empty( $cart_data ) ) {
        $meta_items_two = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item["add_num_fee_two"] ) ) {
        $meta_items_two[] = array( "name" => "Numero Giorni", "value" => "2");
    }

        return $meta_items_two;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_two_on_cart_and_checkout', 99, 2 );

function render_meta_three_on_cart_and_checkout( $cart_data, $cart_item = null ) {

    $meta_items_three = array();
    if( !empty( $cart_data ) ) {
        $meta_items_three = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item_three["add_num_fee_three"] ) ) {
        $meta_items_three[] = array( "name" => "Numero Giorni", "value" => "3");
    }
        return $meta_items_three;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_three_on_cart_and_checkout', 99, 2 );

function render_meta_foue_on_cart_and_checkout( $cart_data, $cart_item = null ) {

    $meta_items_foue = array();
    if( !empty( $cart_data ) ) {
        $meta_items_foue = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item_foue["add_num_fee_foue"] ) ) {
        $meta_items_foue[] = array( "name" => "Numero Giorni", "value" => "4");
    }
        return $meta_items_foue;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_foue_on_cart_and_checkout', 99, 2 );

function render_meta_five_on_cart_and_checkout( $cart_data, $cart_item = null ) {

    $meta_items_five = array();
    if( !empty( $cart_data ) ) {
        $meta_items_five = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item_five["add_num_fee_five"] ) ) {
        $meta_items_five[] = array( "name" => "Numero Giorni", "value" => "5");
    }
        return $meta_items_five;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_five_on_cart_and_checkout', 99, 2 );

function render_meta_six_on_cart_and_checkout( $cart_data, $cart_item = null ) {

    $meta_items_six = array();
    if( !empty( $cart_data ) ) {
        $meta_items_six = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item_six["add_num_fee_six"] ) ) {
        $meta_items_six[] = array( "name" => "Numero Giorni", "value" => "6");
    }
        return $meta_items_six;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_six_on_cart_and_checkout', 99, 2 );

function render_meta_seven_on_cart_and_checkout( $cart_data, $cart_item = null ) {

    $meta_items_seven = array();
    if( !empty( $cart_data ) ) {
        $meta_items_seven = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item_seven["add_num_fee_seven"] ) ) {
        $meta_items_seven[] = array( "name" => "Numero Giorni", "value" => "7");
    }
        return $meta_items_seven;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_seven_on_cart_and_checkout', 99, 2 );

function render_meta_eight_on_cart_and_checkout( $cart_data, $cart_item = null ) {

    $meta_items_eight = array();
    if( !empty( $cart_data ) ) {
        $meta_items_eight = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item_eight["add_num_fee_eight"] ) ) {
        $meta_items_eight[] = array( "name" => "Numero Giorni", "value" => "8");
    }
        return $meta_items_eight;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_eight_on_cart_and_checkout', 99, 2 );

function render_meta_nine_on_cart_and_checkout( $cart_data, $cart_item = null ) {

    $meta_items_nine = array();
    if( !empty( $cart_data ) ) {
        $meta_items_nine = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item_nine["add_num_fee_nine"] ) ) {
        $meta_items_nine[] = array( "name" => "Numero Giorni", "value" => "9");
    }
        return $meta_items_nine;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_nine_on_cart_and_checkout', 99, 2 );

function render_meta_ten_on_cart_and_checkout( $cart_data, $cart_item = null ) {

    $meta_items_ten = array();
    if( !empty( $cart_data ) ) {
        $meta_items_ten = $cart_data; // <- ? missing error ?
    }

    if( isset( $cart_item_ten["add_num_fee_ten"] ) ) {
        $meta_items_ten[] = array( "name" => "Numero Giorni", "value" => "10");
    }
        return $meta_items_ten;
}
add_filter( 'woocommerce_get_item_data', 'render_meta_ten_on_cart_and_checkout', 99, 2 );


// ############
// ############
// ############


function days_order_one_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_one"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '1');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_one_meta_handler', 99, 3);

function days_order_two_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_two"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '2');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_two_meta_handler', 99, 3);

function days_order_three_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_three"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '3');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_three_meta_handler', 99, 3);

function days_order_four_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_four"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '4');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_four_meta_handler', 99, 3);

function days_order_five_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_five"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '5');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_five_meta_handler', 99, 3);

function days_order_six_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_six"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '6');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_six_meta_handler', 99, 3);

function days_order_seven_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_seven"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '7');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_seven_meta_handler', 99, 3);

function days_order_eight_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_eight"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '8');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_eight_meta_handler', 99, 3);

function days_order_nine_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_nine"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '9');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_nine_meta_handler', 99, 3);

function days_order_ten_meta_handler( $item_id, $values, $cart_item_key ){
    if( isset( $values["add_num_fee_ten"] ) ){
        wc_add_order_item_meta( $item_id, "Numero Giorni", '10');
    }
}
add_action( 'woocommerce_add_order_item_meta', 'days_order_ten_meta_handler', 99, 3);
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