为什么这不起作用？：将 json 解码为 php 数组

发布于 2024-11-07 17:53:26 字数 575 浏览 0 评论 0原文

$json = file_get_contents('outputsjson.php');

该文件对一个数组进行编码，然后像这样回显它（并且 echo $json 输出这个）：

{"theList":{"1":{"name":"DSC04156.JPG","title":"DSC04156.JPG","width":3264},"2":{"name":"DSC04157.JPG","title":"DSC04157.JPG","width":3264},"3":{"name":"DSC04158.JPG","title":"DSC04158.JPG","width":3264},"4":{"name":"DSC04159.JPG","title":"DSC04159.JPG","width":3264}}}

现在我尝试从另一个页面对其进行解码，如下所示：

$myarray = json_decode($json, true);

print_r($myarray);

这不输出任何内容，没有错误，什么也没有！

原文

$json = file_get_contents('outputsjson.php');

The file encodes an array then just echoes it as this (and echo $json outputs this):

{"theList":{"1":{"name":"DSC04156.JPG","title":"DSC04156.JPG","width":3264},"2":{"name":"DSC04157.JPG","title":"DSC04157.JPG","width":3264},"3":{"name":"DSC04158.JPG","title":"DSC04158.JPG","width":3264},"4":{"name":"DSC04159.JPG","title":"DSC04159.JPG","width":3264}}}

Now I'm trying to decode it from another page like this:

$myarray = json_decode($json, true);

print_r($myarray);

This outputs nothing, no errors, nothing!

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盗琴音 2024-11-14 17:53:26

尝试这样做（您正在混合 " 和 ' [单引号而不是字符串上的双引号]）：

$json = '{"theList":{"1":{"name":"DSC04156.JPG","title":"DSC04156.JPG","width":3264},"2":{"name":"DSC04157.JPG","title":"DSC04157.JPG","width":3264},"3":{"name":"DSC04158.JPG","title":"DSC04158.JPG","width":3264},"4":{"name":"DSC04159.JPG","title":"DSC04159.JPG","width":3264}}} ';

$myarray = json_decode($json, true);

print_r($myarray);

结果：

Array
(
    [theList] => Array
        (
            [1] => Array
                (
                    [name] => DSC04156.JPG
                    [title] => DSC04156.JPG
                    [width] => 3264
                )

            [2] => Array
                (
                    [name] => DSC04157.JPG
                    [title] => DSC04157.JPG
                    [width] => 3264
                )

            [3] => Array
                (
                    [name] => DSC04158.JPG
                    [title] => DSC04158.JPG
                    [width] => 3264
                )

            [4] => Array
                (
                    [name] => DSC04159.JPG
                    [title] => DSC04159.JPG
                    [width] => 3264
                )

        )

)

Try this instead (you are mixing " and ' [single quotes instead of double quotes on the string]):

$json = '{"theList":{"1":{"name":"DSC04156.JPG","title":"DSC04156.JPG","width":3264},"2":{"name":"DSC04157.JPG","title":"DSC04157.JPG","width":3264},"3":{"name":"DSC04158.JPG","title":"DSC04158.JPG","width":3264},"4":{"name":"DSC04159.JPG","title":"DSC04159.JPG","width":3264}}} ';

$myarray = json_decode($json, true);

print_r($myarray);

And your result:

Array
(
    [theList] => Array
        (
            [1] => Array
                (
                    [name] => DSC04156.JPG
                    [title] => DSC04156.JPG
                    [width] => 3264
                )

            [2] => Array
                (
                    [name] => DSC04157.JPG
                    [title] => DSC04157.JPG
                    [width] => 3264
                )

            [3] => Array
                (
                    [name] => DSC04158.JPG
                    [title] => DSC04158.JPG
                    [width] => 3264
                )

            [4] => Array
                (
                    [name] => DSC04159.JPG
                    [title] => DSC04159.JPG
                    [width] => 3264
                )

        )

)

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梦纸 2024-11-14 17:53:26

尝试将 json 字符串用单引号而不是双引号括起来：

$json = '{"theList":{"1":{"name":"DSC04156.JPG","title":"DSC04156.JPG","width":3264},"2":{"name":"DSC04157.JPG","title":"DSC04157.JPG","width":3264},"3":{"name":"DSC04158.JPG","title":"DSC04158.JPG","width":3264},"4":{"name":"DSC04159.JPG","title":"DSC04159.JPG","width":3264}}}';

Try wrapping the json string in single quotes instead of double quotes:

$json = '{"theList":{"1":{"name":"DSC04156.JPG","title":"DSC04156.JPG","width":3264},"2":{"name":"DSC04157.JPG","title":"DSC04157.JPG","width":3264},"3":{"name":"DSC04158.JPG","title":"DSC04158.JPG","width":3264},"4":{"name":"DSC04159.JPG","title":"DSC04159.JPG","width":3264}}}';

回复收藏 0 原文

怼怹恏 2024-11-14 17:53:26

我执行以下代码没有任何问题：

$json = '{"theList":{"1":{"name":"DSC04156.JPG","title":"DSC04156.JPG","width":3264},"2":{"name":"DSC04157.JPG","title":"DSC04157.JPG","width":3264},"3":{"name":"DSC04158.JPG","title":"DSC04158.JPG","width":3264},"4":{"name":"DSC04159.JPG","title":"DSC04159.JPG","width":3264}}}';
$myarray = json_decode($json, true);
print_r($myarray);

我的猜测是您尝试读取的文件不存在。请记住，如果您使用的是 Linux，文件名区分大小写。使用 file_exists() 函数来检查：

var_dump(file_exists('输出json.php'));

I had no problems executing the following code:

$json = '{"theList":{"1":{"name":"DSC04156.JPG","title":"DSC04156.JPG","width":3264},"2":{"name":"DSC04157.JPG","title":"DSC04157.JPG","width":3264},"3":{"name":"DSC04158.JPG","title":"DSC04158.JPG","width":3264},"4":{"name":"DSC04159.JPG","title":"DSC04159.JPG","width":3264}}}';
$myarray = json_decode($json, true);
print_r($myarray);

My guess would be that the file you are trying to read from does not exist. Remember that, if you are using Linux, file names are case-sensitive. Use the file_exists() function to check this:

var_dump(file_exists('outputsjson.php'));

回复收藏 0 原文

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