强制将数组添加到集成到插件的 PHP 中的 JSON 单个元素中

Question

这个问题是基于现有的帖子 强制将数组添加到PHP中的JSON的单个元素中

现在我需要在第三方WordPress导出插件中添加一些自定义函数，以制作我想要的JSON输出。由于我对PHP和数组有一些有限的知识，所以希望得到你们的帮助

此代码仍需要修复两个问题：

1(order_item postid=32081无法显示所有项目(共3个订单项目(，目前只显示最后一个，例如ugs=A0003

2(需要在order_item下的所有参数中包含数组(或方括号(

用于导出 JSON 的现有函数

function woo_ce_export_dataset_override_order( $output = null, $export_type = null) {
    global $export;
    $orders = woo_ce_get_orders( 'order', $export->args );
    if( !empty( $orders ) ) {
        if( !empty( $export->fields ) ) {
            $export->total_columns = $size = count( $export->columns );
            $output = [
                "transaction_date" => date('Ymd'),
                "neworders" => []    
            ];
            if( !empty( $export->fields ) ) {
                foreach( $orders as $order ) {
                    $args = $export->args;
                    $order = woo_ce_get_order_data( $order, 'order', $args, array_keys( $export->fields ) );
                    foreach( array_keys( $export->fields ) as $key => $field ) {
                        if( isset( $order->$field ) && isset( $export->columns[$key] ) ) {
                            $post[ $export->columns[$key] ] = $order->$field;
                        }
                    }
                    if( !empty( $order->order_items ) ) {
                        foreach( $order->order_items as $order_item ) {
                            foreach( array_keys( $export->fields ) as $key => $field ) {
                                if( isset( $order_item->$field ) && isset( $export->columns[$key] ) ) {
                                    $post['order_item'][ $export->columns[$key] ] = $order_item->$field;
                                }
                            }
                        }
                    }
                    $output['neworders'][] = $post;
                }
            }
        }
    }
    return array($output);
} 

我从输出中得到什么

[
    {
        "transaction_date": "20190609",
        "neworders": [
            {
                "postid": 32081,
                "label": "22615",
                "address": "19 RUE",
                "postcode": "27450",
                "order_item": {
                    "ugs": "A0003",
                    "qty": "6"
                }
            },
            {
                "postid": 32082,
                "label": "22617",
                "address": "2 impas",
                "postcode": "12300",
                "order_item": {
                    "ugs": "B0002",
                    "qty": "1"
                }
            }
        ]
    }
]

我需要什么

[
    {
        "transaction_date": "20190609",
        "neworders": [
            {
                "postid": 32081,
                "label": "22615",
                "address": "19 RUE",
                "postcode": "27450",
                "order_item": [ 
                    {
                        "ugs": "A0001",
                        "qty": "3"
                    },
                    {
                        "ugs": "A0002",
                        "qty": "1"
                    },
                    {
                        "ugs": "A0003",
                        "qty": "6"
                    }
               ]
            },
            {
                "postid": 32082,
                "label": "22617",
                "address": "2 impas",
                "postcode": "12300",
                "order_item": [
                   {
                      "ugs": "B0001",
                      "qty": "1"
                  }
                ]
            }
        ]
    }
]

Answer 1

您的代码每次通过时都会覆盖 order_item 数组。这就是为什么只有最后一个出现。添加一个计数器以将所有项目添加为数组：

foreach( array_keys( $export->fields ) as $key => $field ) {
    if( isset( $order_item->$field ) && isset( $export->columns[$key] ) ) {
        $post['order_item'][$i][ $export->columns[$key] ] = $order_item->$field;
    }
    $i++;
}