Php 解析名称为空的json对象

这是我得到的json响应。请帮助解析json。我使用了json_解码，但我不知道如何处理没有名称的对象

   {
        "child": {
            "": {
                "rss": [{
                    "data": "\n \n",
                    "attribs": {
                        "": {
                            "version": "2.0"
                        }
                    },
                    "xml_base": "",
                    "xml_base_explicit": false,
                    "xml_lang": "",
                    "child": {
                        "": {
                            "channel": [{
                                "data": "\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n ",
                                "attribs": [],
                                "xml_base": "",
                                "xml_base_explicit": false,
                                "xml_lang": "",
                                "child": {
                                    "": {
                                        "title": [{
                                            "data": "Data name",
                                            "attribs": [],
                                            "xml_base": "",
                                            "xml_base_explicit": false,
                                            "xml_lang": ""
                                        }]
                                    }

                                }
                            }]
                        }
                    }
                }]
            }
        }
    }

我正在尝试获取标题中数据的值。但是我不知道如何解决一个没有名称的对象。请有人帮助

 {
        "child": {
            "": {}}}

也许这有帮助

<?php
$json='{
        "child": {
            "": {
                "rss": [{
                    "data": "\n \n",
                    "attribs": {
                        "": {
                            "version": "2.0"
                        }
                    },
                    "xml_base": "",
                    "xml_base_explicit": false,
                    "xml_lang": "",
                    "child": {
                        "": {
                            "channel": [{
                                "data": "\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n ",
                                "attribs": [],
                                "xml_base": "",
                                "xml_base_explicit": false,
                                "xml_lang": "",
                                "child": {
                                    "": {
                                        "title": [{
                                            "data": "Data name",
                                            "attribs": [],
                                            "xml_base": "",
                                            "xml_base_explicit": false,
                                            "xml_lang": ""
                                        }]
                                    }

                                }
                            }]
                        }
                    }
                }]
            }
        }
    }';

$json_decoded=json_decode($json,true);
print_r($json_decoded['child']['']);
?>

这可能有帮助

<?php
$json='{
        "child": {
            "": {
                "rss": [{
                    "data": "\n \n",
                    "attribs": {
                        "": {
                            "version": "2.0"
                        }
                    },
                    "xml_base": "",
                    "xml_base_explicit": false,
                    "xml_lang": "",
                    "child": {
                        "": {
                            "channel": [{
                                "data": "\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n ",
                                "attribs": [],
                                "xml_base": "",
                                "xml_base_explicit": false,
                                "xml_lang": "",
                                "child": {
                                    "": {
                                        "title": [{
                                            "data": "Data name",
                                            "attribs": [],
                                            "xml_base": "",
                                            "xml_base_explicit": false,
                                            "xml_lang": ""
                                        }]
                                    }

                                }
                            }]
                        }
                    }
                }]
            }
        }
    }';

$json_decoded=json_decode($json,true);
print_r($json_decoded['child']['']);
?>

---

有两种方法可以访问

标题

对象，具体取决于您是将JSON解码为对象还是数组。如果解码为对象，则需要使用

->{'element'}

符号来绕过空名称（注意此仅适用于PHP 7.2及更高版本）：

输出：

Array ( 
    [0] => stdClass Object (
         [data] => Data name
         [attribs] => Array ( )
         [xml_base] =>
         [xml_base_explicit] =>
         [xml_lang] => 
    )
)

Array ( 
    [0] => Array (
        [data] => Data name
        [attribs] => Array ( )
        [xml_base] =>
        [xml_base_explicit] =>
        [xml_lang] =>
    ) 
)

作为一个数组，您只需要使用一个空索引（

'

）：

输出：

Array ( 
    [0] => stdClass Object (
         [data] => Data name
         [attribs] => Array ( )
         [xml_base] =>
         [xml_base_explicit] =>
         [xml_lang] => 
    )
)

Array ( 
    [0] => Array (
        [data] => Data name
        [attribs] => Array ( )
        [xml_base] =>
        [xml_base_explicit] =>
        [xml_lang] =>
    ) 
)

---

有两种方法可以访问

title

对象，具体取决于您是将JSON解码为对象还是数组。如果解码为对象，则需要使用

->{'element'}

符号来绕过空名称（注意此仅适用于PHP 7.2及更高版本）：

输出：

Array ( 
    [0] => stdClass Object (
         [data] => Data name
         [attribs] => Array ( )
         [xml_base] =>
         [xml_base_explicit] =>
         [xml_lang] => 
    )
)

Array ( 
    [0] => Array (
        [data] => Data name
        [attribs] => Array ( )
        [xml_base] =>
        [xml_base_explicit] =>
        [xml_lang] =>
    ) 
)

作为一个数组，您只需要使用一个空索引（

'

）：

输出：

Array ( 
    [0] => stdClass Object (
         [data] => Data name
         [attribs] => Array ( )
         [xml_base] =>
         [xml_base_explicit] =>
         [xml_lang] => 
    )
)

Array ( 
    [0] => Array (
        [data] => Data name
        [attribs] => Array ( )
        [xml_base] =>
        [xml_base_explicit] =>
        [xml_lang] =>
    ) 
)

---

您以前试过该代码吗？如果是的话，把它贴在这里。还有其他的外环。我是用forloop到达这里的。但是我不知道如何前进@David你从哪里得到json的？让我猜猜，这是数组输出的XML吗。如果您坚持使用XML，那么有各种各样的资源，您以前是否尝试过该代码？如果是的话，把它贴在这里。还有其他的外环。我是用forloop到达这里的。但是我不知道如何前进@David你从哪里得到json的？让我猜猜，这是数组输出的XML吗。如果您坚持使用XML，那么有各种各样的资源可供使用-，