在循环中:
$custom_fields = get_post_custom(the_ID());
$my_custom_field = $custom_fields[\'zh_invoice_round_off_number\'];
convert_number((int)$my_custom_field);
或使用您的功能:
$custom_value = zh_get_invoice_round_off_number();
echo convert_number( (int) $custom_value );