json_decode在php中不起作用

Question

请检查我下面的代码，并让我知道我做错了什么，我只想解码json并在浏览器上以数组形式打印

<?php

$json = '{
"Token" : "xxx-xxx-xxx",
"ID": "1",
"Recipients": [
    {
        "Recipient_ID": "XX",
        "From_Name": "XXX",
        "From_Email": "XXX",
        "To_Name": "XXX",
        "To_Email": "XXX",
        "Subject": "XXX",
        "Message": "XXX",
        "Attachments": [
            {
                "File_Name": "XXX",
                "File_Path": "XXX",
            }
        ],
    }
],
}';

$input = $json;
print_r(json_decode(stripslashes($input)));

?>

我尝试使用此json字符串进行在线解码（ http://jsonviewer.stack.hu/ ），并且它可以正常工作，因此json字符串没有问题。 任何帮助将不胜感激。

Answer 1

<?php

$json = '{
    "Token": "xxx-xxx-xxx",
    "ID": "1",
    "Recipients": [{
        "Recipient_ID": "XX",
        "From_Name": "XXX",
        "From_Email": "XXX",
        "To_Name": "XXX",
        "To_Email": "XXX",
        "Subject": "XXX",
        "Message": "XXX",
        "Attachments": [{
            "File_Name": "XXX",
            "File_Path": "XXX"
        }]
    }]
}';

$input = $json;
var_dump(json_decode(stripslashes($input)));

?>

Answer 2

问题出在您拥有的json格式上。您有一些需要删除的'，'，这就是json_decode（）无法完成工作的原因。 该函数引发错误异常，但是您应该做一些技巧来查看错误。 您可以使用此代码查看错误。

switch (json_last_error()) {
    case JSON_ERROR_NONE:
        echo ' - No errors';
    break;
    case JSON_ERROR_DEPTH:
        echo ' - Maximum stack depth exceeded';
    break;
    case JSON_ERROR_STATE_MISMATCH:
        echo ' - Underflow or the modes mismatch';
    break;
    case JSON_ERROR_CTRL_CHAR:
        echo ' - Unexpected control character found';
    break;
    case JSON_ERROR_SYNTAX:
        echo ' - Syntax error, malformed JSON';
    break;
    case JSON_ERROR_UTF8:
        echo ' - Malformed UTF-8 characters, possibly incorrectly encoded';
    break;
    default:
        echo ' - Unknown error';
    break;
}

而且您的json应该是这样的。

$json = '{
"Token" : "xxx-xxx-xxx",
"ID": "1",
"Recipients": [
    {
        "Recipient_ID": "XX",
        "From_Name": "XXX",
        "From_Email": "XXX",
        "To_Name": "XXX",
        "To_Email": "XXX",
        "Subject": "XXX",
        "Message": "XXX",
        "Attachments": [
            {
                "File_Name": "XXX",
                "File_Path": "XXX"
            }
        ]
    }
]
}';