我只是想知道如何通过一点逆向工程来做到这一点，希望这能帮助一些人：

    $availability = array();
    $availability[0][\'type\'] = \'time:range\';
    $availability[0][\'bookable\'] = \'yes\';
    //Default priority
    $availability[0][\'priority\'] = 10;

    //case \'time:range\'
    $availability[0][\'from\'] = wc_booking_sanitize_time( $hours );
    $availability[0][\'to\']   = wc_booking_sanitize_time( $hours );
    $availability[0][\'from_date\'] = wc_clean( $date );
    $availability[0][\'to_date\']   = wc_clean( $date );

    add_post_meta( $product_ID, \'_wc_booking_availability\', $availability );