如何在json中传递变量数组并检索它

Question

我有一个以变量$ coinPacks命名的数组，我试图像这样传递它

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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都没有

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

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我如何传递值并检索它

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当我打印变量$ CoinPacks时，我得到一个像这样的回复

[_ data：protected] =＆gt;排列         （             [0] =＆gt;排列                 （                     [id] =＆gt; 1                     [number_of_coins] =＆gt; 100                     [price] =＆gt; 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
            )

    )

也像这些代码一样

[_ metadata：protected] =＆gt;排列                 （                     [id] =＆gt;排列                         （                             [SCHEMA_NAME] =＆gt;                             [TABLE_NAME] =＆gt;包                             [COLUMN_NAME] =＆gt; ID                             [COLUMN_POSITION] =＆gt; 1                             [DATA_TYPE] =＆gt; INT                             [DEFAULT] =＆gt;                             [NULLABLE] =＆gt;                             [LENGTH] =＆gt;                             [SCALE] =＆gt;                             [PRECISION] =＆gt;                             [UNSIGNED] =＆gt;                             [PRIMARY] =＆gt; 1                             [PRIMARY_POSITION] =＆gt; 1                             [IDENTITY] =＆gt; 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）。

获取您的包信息：

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