php - 如何在 json 中传递变量数组并检索它

Question

我得到了一个在变量 $coinPacks 中命名的数组，我尝试像这样传递它

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echo $this->_helper->json(array('pack'=>$coinPacks));

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但是当我使用此代码显示它时什么也没有

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 alert(JSON.stringify(response.pack));

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如何传递值并检索它

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当我打印变量 $CoinPacks 时，我得到这样的响应

[_data:protected] => 数组 ( [0] => 数组 ( [id] => 1 [硬币数量] => 100 [价格] => 1.00 )

        [1] => Array
            (
                [id] => 2
                [number_of_coins] => 500
                [price] => 3.00
            )

        [2] => Array
            (
                [id] => 3
                [number_of_coins] => 1000
                [price] => 5.00
            )

        [3] => Array
            (
                [id] => 4
                [number_of_coins] => 5000
                [price] => 10.00
            )

    )

也喜欢这样的一些代码

[_metadata:protected] => 数组 ( [id] => 数组 ( [SCHEMA_NAME] => [TABLE_NAME] => 包 [COLUMN_NAME] => ID [COLUMN_POSITION] => 1 [DATA_TYPE] => 整数 [默认] => [可以为空] => [长度] => [规模] => [精度] => [未签名] => [主要] => 1 [主要位置] => 1 [身份] => 1 )

                [pack_name] => Array
                    (
                        [SCHEMA_NAME] => 
                        [TABLE_NAME] => packs
                        [COLUMN_NAME] => pack_name
                        [COLUMN_POSITION] => 2
                        [DATA_TYPE] => varchar
                        [DEFAULT] => 
                        [NULLABLE] => 1
                        [LENGTH] => 200
                        [SCALE] => 
                        [PRECISION] => 
                        [UNSIGNED] => 
                        [PRIMARY] => 
                        [PRIMARY_POSITION] => 
                        [IDENTITY] => 
                    )

                [number_of_coins] => Array
                    (
                        [SCHEMA_NAME] => 
                        [TABLE_NAME] => packs
                        [COLUMN_NAME] => number_of_coins
                        [COLUMN_POSITION] => 3
                        [DATA_TYPE] => int
                        [DEFAULT] => 
                        [NULLABLE] => 1
                        [LENGTH] => 
                        [SCALE] => 
                        [PRECISION] => 
                        [UNSIGNED] => 
                        [PRIMARY] => 
                        [PRIMARY_POSITION] => 
                        [IDENTITY] => 
                    )

                [price] => Array
                    (
                        [SCHEMA_NAME] => 
                        [TABLE_NAME] => packs
                        [COLUMN_NAME] => price
                        [COLUMN_POSITION] => 4
                        [DATA_TYPE] => float
                        [DEFAULT] => 
                        [NULLABLE] => 1
                        [LENGTH] => 
                        [SCALE] => 2
                        [PRECISION] => 10
                        [UNSIGNED] => 
                        [PRIMARY] => 
                        [PRIMARY_POSITION] => 
                        [IDENTITY] => 
                    )

Answer 1

PHP

json_encode(array('pack'=>$coinPacks)); // check if it matches the output of your helper

这会将数组编码为 JSON。

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JS

console.log(JSON.parse(response));

这会将 JSON 解码为 JS 对象(并将其输出到控制台)。

要获取您的包信息:

var pack = JSON.parse(response).pack;