WooCommerce - Add Connection Fee

woocoomerce-add-connection-fee.php

//CONNECTION FEES

function add_connection_fee( $cart_object ) {

    global $woocommerce;
    $specialfeecat = 17; // category id for the special fee
    $spfee = 0.00; // initialize special fee
    $spfeeperprod = 9.99; //special fee per product

    foreach ( $cart_object->cart_contents as $key => $value ) {

        $proid = $value['product_id']; //get the product id from cart
        $quantiy = $value['quantity']; //get quantity from cart
        $itmprice = $value['data']->price; //get product price

        $terms = get_the_terms( $proid, 'product_cat' ); //get taxonamy of the products
        if ( $terms && ! is_wp_error( $terms ) ) :
            foreach ( $terms as $term ) {
                $catid = $term->term_id;
                if($specialfeecat == $catid ) {
                    //$spfee = $spfee + $itmprice * $quantiy * $spfeeperprod;
                    $spfee = $spfee + $spfeeperprod * $quantiy;
                }
            }
        endif;  
    }
    if($spfee > 0 ) {
        $woocommerce->cart->add_fee( 'Connection Charge', $spfee, true, 'standard' );
    }
}
add_action( 'woocommerce_cart_calculate_fees', 'add_connection_fee' );