wordpress/woocommerce - 自定义字段的总和

Question

我在我的 woocommerce 中添加了一个输入字段（与每个订单相关联）。我可以使用以下代码完美显示该字段的每个值：

function MY_COLUMNS_VALUES_FUNCTION( $column ) {
    global $post;
    $order = new WC_Order( $post->ID );
    $items = $order->get_items();

    //start editing, I was saving my fields for the orders as custom post meta
    //if you did the same, follow this code
    if ( $column == 'authors_income' ) {
        foreach ( $items as $item ) {

            echo $item['MY-FIELD-NAME'];

        }
    }

但是我怎样才能将该字段的所有值相加并 echo/print 它呢？

Answer 1

只需将当前值添加到变量并在循环后回显结果

if ( $column == 'authors_income' ) {
   $totalIncome = 0;
    foreach ( $items as $item ) {

        echo $item['MY-FIELD-NAME'];
        $totalIncome = $totalIncome + $item['MY-FIELD-NAME'];

    }
    echo $totalIncome;
}

wordpress/woocommerce - 自定义字段的总和

wordpress/woocommerce - sum of custom fields

php

wordpress

woocommerce

custom-fields