使用SimpleXML不返回的某些元素属性加载XML [英] Loading XML using SimpleXML doesn't return attributes on some elements

问题描述

我已加载使用XML文件

 使用simplexml_load_file（$文件路径的SimpleXMLElement'，LIBXML_NOCDATA）;
 

对于一般的XML提供它工作正常。然而，对于一些在XML元素的属性不被转换成一个'@属性阵列，并且代替缺少形成输出。下面是一个示例：

 ＆LT; UI_DEFINITION＆GT;
＆LT; EDIT_PERMISSION＆GT; testPermission＆LT; / EDIT_PERMISSION＆GT;
＆LT; D​​EFAULT_VALUES＆GT;
    ＆lt;显示＆GT;隐藏＆LT; /显示＆GT;
    ＆LT; css_class＆GT; generic_css_class＆LT; / css_class＆GT;
    ＆LT;标题＆GT; {标签}＆LT; /标题＆GT;
    ＆LT;＆型GT;串LT; /类型＆GT;
    ＆LT; wrapper_format＆GT; {值}＆LT; / wrapper_format＆GT;
    ＆LT; full_path＆GT;假LT; / full_path＆GT;
    ＆LT;＆强制性GT假LT; /强制性＆GT;
    ＆LT; edit_permission＆GT; testPermission＆LT; / edit_permission＆GT;
    ＆所述; MAX_LENGTH大于0＆下; / MAX_LENGTH＆GT;
＆LT; / DEFAULT_VALUES＆GT;
＆LT;＆查找GT;
    ＆LT; D​​B_LOOKUP NAME =TEST3＆GT;
        ＆LT;视图＆gt; ???＆LT; /视图＆gt;
        ＆LT; ID_FIELD＆GT; ???＆LT; / ID_FIELD＆GT;
        ＆LT; D​​ESCR_FIELD＆GT; ???＆LT; / DESCR_FIELD＆GT;
        ＆LT;排序＆gt; ??? ASC＆LT; /排序＆gt;
    ＆LT; / DB_LOOKUP＆GT;
    ＆LT; D​​B_LOOKUP NAME =测试1＆GT;
        ＆LT;视图＆gt; ???＆LT; /视图＆gt;
        ＆LT; ID_FIELD＆GT; ???＆LT; / ID_FIELD＆GT;
        ＆LT; D​​ESCR_FIELD＆GT; ???＆LT; / DESCR_FIELD＆GT;
        ＆LT;排序＆gt; ??? ASC＆LT; /排序＆gt;
    ＆LT; / DB_LOOKUP＆GT;
＆LT; /查找＆GT;
＆LT;面积internal_name =main_details称号=显示=秀＆GT;
    ＆LT;字段查找=测试1标题=标题＆GT;标题＆LT; / FIELD＆GT;
    ＆LT;字段标题=名称＆GT; GIVEN_NAME＆LT; / FIELD＆GT;
    ＆LT;字段title =中间名（S）＆GT; Middle_Names＆LT; / FIELD＆GT;
    ＆LT;字段标题=姓＆GT;＆FAMILY_NAME LT; / FIELD＆GT;
    ＆LT;字段标题=性别＆GT;性别与LT; / FIELD＆GT;
    ＆LT;字段标题=诞生TYPE =日期＆GT;＆DATE_OF_BIRTH LT; / FIELD＆GT;
    ＆LT;现场MAX_LENGTH =20标题=ID＆GT; Unique_Identifier＆LT; / FIELD＆GT;
＆LT; / AREA＆GT;
 

这给出了print_r的输出如下（我已经添加在这就是问题所在位换行）：

  SimpleXMLElement对象（[UI_DEFINITION] =＆GT; SimpleXMLElement对象（ =＆GT; testPermission [DEFAULT_VALUES] =＆GT; SimpleXMLElement对象（[显示] =＆GT;隐藏[css_class] =＆GT; generic_css_class [标题] =＆GT; {标签}【类型】=＆GT;字符串[wrapper_format] =＆GT; {值} [full_path] =＆GT;假[强制性] =＆GT;假[edit_permission] =＆GT; testPermission [MAX_LENGTH] = 0）[查询] =＆GT; SimpleXMLElement对象（[DB_LOOKUP] =＆GT;数组（[0] =＆GT; SimpleXMLElement对象（[@属性] =＆GT;阵列（[名称] =＆GT; TEST3 ）[查看] =＆GT; ??? [ID_FIELD] =＆GT; ??? [DESCR_FIELD] =＆GT; ??? [订购] =＆GT; ??? ASC）[1] =＆GT; SimpleXMLElement对象（[@属性] =＆GT;阵列（[名称] =＆GT;测试1）[查看] =＆GT; ??? [ID_FIELD] =＆GT; ??? [DESCR_FIELD] =＆GT; ??? [订购] =＆GT; ?? ？ASC）））
[区域] =＆GT; SimpleXMLElement对象（[@属性] =＆GT;数组（[internal_name] =＆GT; main_details [标题] =＆GT; [显示] =＆gt;显示）[字段] =＆GT;数组（[0] =＆GT;标题[1 ] =＆GT; GIVEN_NAME [2] =＆GT; Middle_Names [3] =＆GT; FAMILY_NAME [4] =＆GT;性别[5] =＆GT; DATE_OF_BIRTH [6] =＆GT; Unique_Identifier））））
 

正如你所看到的，属性阵列正确添加到大多数元素，但不能到外地元素。我已经试过重新命名他们，这似乎并没有发挥作用。

编辑：
我还要补充一点，我已经试过了FIELDS标签周围的字段标识，也无济于事。

编辑：

我已经简化了XML巨大，它仍然没有返回ANNY属性：

 ＆LT; UI_DEFINITION＆GT;
                            ＆LT;字段查找=测试1标题=标题＆GT;标题＆LT; / FIELD＆GT;
                    ＆LT; / UI_DEFINITION＆GT;
 

生产：

  SimpleXMLElement对象（[UI_DEFINITION] =＆GT; SimpleXMLElement对象（[字段] =＆GT;标题））
 

解决方案

对不起它采取这么久才回来，回答这个问题！

正如刚才code提示，属性是访问。我在的SimpleXML的序列化问题对象为另一种格式。使用printr或json_convert的，而对象上导致了不是在报告的病例中可用的属性。

我没有远远不够进入这个找到打印的code为基础的解决办法，或将这些对象包括有问题的情况下，我只是周围工作作为XML数据的一部分：

 ＆LT; UI_DEFINITION＆GT;
        ＆LT;字段查找=测试1标题=标题＆GT;＆LT; VALUEPATH＆GT;标题＆LT; / VALUEPATH＆GT;＆LT; / FIELD＆GT;
 ＆LT; / UI_DEFINITION＆GT;
 

Addint这个额外级别成层次结构导致的属性是在顶层pserved $ P $，和文本值在子级是可用的正确

I have loaded an XML file using

simplexml_load_file($filePath,'SimpleXMLElement', LIBXML_NOCDATA);

And for most of the XML provided it works fine. However, for some of the elements in the XML the attributes are not converted into an '@attributes' array, and are instead missing form the output. Here's a sample:

<UI_DEFINITION>
<EDIT_PERMISSION>testPermission</EDIT_PERMISSION>
<DEFAULT_VALUES>
    <display>hidden</display>
    <css_class>generic_css_class</css_class>
    <title>{tag}</title>
    <type>string</type>
    <wrapper_format>{value}</wrapper_format>
    <full_path>false</full_path>
    <mandatory>false</mandatory>
    <edit_permission>testPermission</edit_permission>
    <max_length>0</max_length>
</DEFAULT_VALUES>
<LOOKUPS>
    <DB_LOOKUP name="test3">
        <VIEW>???</VIEW>
        <ID_FIELD>???</ID_FIELD>
        <DESCR_FIELD>???</DESCR_FIELD>
        <ORDER>??? asc</ORDER>
    </DB_LOOKUP>
    <DB_LOOKUP name="test1">
        <VIEW>???</VIEW>
        <ID_FIELD>???</ID_FIELD>
        <DESCR_FIELD>???</DESCR_FIELD>
        <ORDER>??? asc</ORDER>
    </DB_LOOKUP>
</LOOKUPS>
<AREA internal_name="main_details" title="" display="show">
    <FIELD lookup="test1" title="Title">Title</FIELD>
    <FIELD title="Name">Given_Name</FIELD>
    <FIELD title="Mid. Name(s)">Middle_Names</FIELD>
    <FIELD title="Family Name">Family_Name</FIELD>
    <FIELD title="Gender">Gender</FIELD>
    <FIELD title="Born" type="date">Date_of_Birth</FIELD>
    <FIELD max_length="20" title="ID">Unique_Identifier</FIELD>
</AREA>

This gives the following output from print_r (I've added a line break at the bit that's the problem):

SimpleXMLElement Object ( [UI_DEFINITION] => SimpleXMLElement Object ( [EDIT_PERMISSION] => testPermission [DEFAULT_VALUES] => SimpleXMLElement Object ( [display] => hidden [css_class] => generic_css_class [title] => {tag} [type] => string [wrapper_format] => {value} [full_path] => false [mandatory] => false [edit_permission] => testPermission [max_length] => 0 ) [LOOKUPS] => SimpleXMLElement Object ( [DB_LOOKUP] => Array ( [0] => SimpleXMLElement Object ( [@attributes] => Array ( [name] => test3 ) [VIEW] => ??? [ID_FIELD] => ??? [DESCR_FIELD] => ??? [ORDER] => ??? asc ) [1] => SimpleXMLElement Object ( [@attributes] => Array ( [name] => test1 ) [VIEW] => ??? [ID_FIELD] => ??? [DESCR_FIELD] => ??? [ORDER] => ??? asc ) ) ) 
[AREA] => SimpleXMLElement Object ( [@attributes] => Array ( [internal_name] => main_details [title] => [display] => show ) [FIELD] => Array ( [0] => Title [1] => Given_Name [2] => Middle_Names [3] => Family_Name [4] => Gender [5] => Date_of_Birth [6] => Unique_Identifier ) ) ) )

As you can see, the attributes array is correctly added to most of the elements, but not to the FIELD elements. I've tried renaming them and it didn't seem to make a difference.

EDIT: I should also add that I've tried surrounding the FIELD tags with a FIELDS tag, also to no avail.

EDIT:

I've simplified the XML hugely, and it still doesn't return anny attributes:

<UI_DEFINITION>
                            <FIELD lookup="test1" title="Title">Title</FIELD>
                    </UI_DEFINITION>

produces:

SimpleXMLElement Object ( [UI_DEFINITION] => SimpleXMLElement Object ( [FIELD] => Title ) )

解决方案

Sorry it's taken so long to come back and answer this question!

As MrCode suggested, the attributes were accessible. The problem I was in the serialisation of the SimpleXML object into another format. Using printr or json_convert on the while object resulted in the attributes not being available in the cases reported.

I didn't go far enough into this to find a code-based workaround for printing or converting these objects including the problematic cases, I simply worked around it as part of the XML data:

<UI_DEFINITION>
        <FIELD lookup="test1" title="Title"><VALUEPATH>Title</VALUEPATH></FIELD>
 </UI_DEFINITION>

Addint this extra level into the hierarchy resulted in the attributes being preserved at the top level, and the text value being available correctly at the sub-level.

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