考虑以下XML：
<?xml version="1.0" encoding="UTF-8"?>
<OS>
<data>
<OSes>
<centos>
<v_5>
<i386>
<id>centos5-32</id>
<name>CentOS 5 - 32 bit</name>
<version>5</version>
<architecture>32</architecture>
<os>centos</os>
</i386>
<x86_64>
<id>centos5-64</id>
<name>CentOS 5 - 64 bit</name>
<version>5</version>
<architecture>64</architecture>
<os>centos</os>
</x86_64>
</v_5>
<v_6>
<i386>
<id>centos6-32</id>
<name>CentOS 6 - 32 bit</name>
<version>6</version>
<architecture>32</architecture>
<os>centos</os>
</i386>
<x86_64>
<id>centos6-64</id>
<name>CentOS 6 - 64 bit</name>
<version>6</version>
<architecture>64</architecture>
<os>centos</os>
</x86_64>
</v_6>
</centos>
<ubuntu>
<v_10>
<i386>
<id>ubuntu10-32</id>
<name>Ubuntu 10 - 32 bit</name>
<version>10</version>
<architecture>32</architecture>
<os>ubuntu</os>
</i386>
<amd64>
<id>ubuntu10-64</id>
<name>Ubuntu 10 - 64 bit</name>
<version>10</version>
<architecture>64</architecture>
<os>ubuntu</os>
</amd64>
</v_10>
</ubuntu>
</OSes>
</data>
</OS>
从上面的XML文档中，我想提取以下5个元素节点
<id> <name> <version> <architecture> <os> 将它们作为数组。我尝试了以下操作：
<?php
require_once "xml.php";
try {
$xml = new SimpleXMLElement($xmlstr);
foreach($xml->xpath(' //id | //name | //version// | //architecture | //os ') as $record) {
echo $record;
}
} catch(Exception $e){
echo $e->getMessage();
}
上面的代码有效，但每条记录都是一个单独的对象。我希望有人将所有5个元素节点合并为一个数组元素。像这样的东西：
$osList = Array( [0] => Array(
["id"] => "<id>",
["name"] => "<name>",
["version"] => "<version>",
....
)
.....
);
语法不正确，但你明白了。知道怎么做吗？
答案 0 :(得分：3)
这可能会有所帮助
$obj = new SimpleXMLElement($xml);
$rtn = array();
$cnt = 0;
foreach($obj->xpath('///OSes/*/*') as $rec)
{
foreach ($rec as $rec_obj)
{
if (!isset($rtn[$cnt]))
{
$rtn[$cnt] = array();
}
foreach ($rec_obj as $name=>$val)
{
$rtn[$cnt][(string)$name] = (string)$val;
}
++$cnt;
}
}
答案 1 :(得分：2)
通过修改其他人建议的xpath，我得出了这个结论。它使用一个辅助函数来重新格式化每个xpath结果节点，并使用array_reduce迭代结果。然后它返回转换后的结果（Demo）：
$xml = new SimpleXMLElement($xmlstr);
$elements = array_reduce(
$xml->xpath('//OSes/*/*'),
function($v, $w) {
$w = array_values((array) $w); // convert result to array
foreach($w as &$d) $d = (array) $d; // convert inner elements to array
return array_merge($v, $w); // merge with existing
},
array() // empty elements at start
);
输出：
Array
(
[0] => Array
(
[id] => centos5-32
[name] => CentOS 5 - 32 bit
[version] => 5
[architecture] => 32
[os] => centos
)
[1] => Array
(
[id] => centos5-64
[name] => CentOS 5 - 64 bit
[version] => 5
[architecture] => 64
[os] => centos
)
[2] => Array
(
[id] => centos6-32
[name] => CentOS 6 - 32 bit
[version] => 6
[architecture] => 32
[os] => centos
)
[3] => Array
(
[id] => centos6-64
[name] => CentOS 6 - 64 bit
[version] => 6
[architecture] => 64
[os] => centos
)
[4] => Array
(
[id] => ubuntu10-32
[name] => Ubuntu 10 - 32 bit
[version] => 10
[architecture] => 32
[os] => ubuntu
)
[5] => Array
(
[id] => ubuntu10-64
[name] => Ubuntu 10 - 64 bit
[version] => 10
[architecture] => 64
[os] => ubuntu
)
)
我还选择将原始xpath结果转换为两个级别的数组，每次在当前级别内已存在一个键，将当前条目移动到新条目（Demo）：
try
{
$xml = new SimpleXMLElement($xmlstr);
$elements = array();
$curr = NULL;
foreach($xml->xpath('//id | //name | //version | //architecture | //os') as $record)
{
$key = $record->getName();
$value = (string) $record;
if (!$curr || array_key_exists($key, $curr)) {
unset($curr);
$curr = array();
$elements[] = &$curr;
}
$curr[$key] = $value;
}
unset($curr);
}
catch(Exception $e)
{
echo $e->getMessage();
}
结果如下：
Array
(
[0] => Array
(
[id] => centos5-32
[name] => CentOS 5 - 32 bit
[version] => 5
[architecture] => 32
[os] => centos
)
[1] => Array
(
[id] => centos5-64
[name] => CentOS 5 - 64 bit
[version] => 5
[architecture] => 64
[os] => centos
)
[2] => Array
(
[id] => centos6-32
[name] => CentOS 6 - 32 bit
[version] => 6
[architecture] => 32
[os] => centos
)
[3] => Array
(
[id] => centos6-64
[name] => CentOS 6 - 64 bit
[version] => 6
[architecture] => 64
[os] => centos
)
[4] => Array
(
[id] => ubuntu10-32
[name] => Ubuntu 10 - 32 bit
[version] => 10
[architecture] => 32
[os] => ubuntu
)
[5] => Array
(
[id] => ubuntu10-64
[name] => Ubuntu 10 - 64 bit
[version] => 10
[architecture] => 64
[os] => ubuntu
)
)
答案 2 :(得分：1)
试试这个：
// flatten:
function arrayval1($any) {
return array_values((array)$any);
}
function arrayval2($any) {
return (array)$any;
}
// xml objects with xml objects:
$oses = $xml->xpath('//OSes/*/*');
// an array of xml objects:
$oses = array_map('arrayval1', $oses);
// merge to a flat array:
$oses = call_user_func_array('array_merge', $oses);
// xml objects -> arrays
$oses = array_map('arrayval2', $oses);
print_r($oses);
我的结果：
Array
(
[0] => Array
(
[id] => centos5-32
[name] => CentOS 5 - 32 bit
[version] => 5
[architecture] => 32
[os] => centos
)
[1] => Array
(
[id] => centos5-64
[name] => CentOS 5 - 64 bit
[version] => 5
[architecture] => 64
[os] => centos
)
[2] => Array
(
[id] => centos6-32
[name] => CentOS 6 - 32 bit
[version] => 6
[architecture] => 32
[os] => centos
)
[3] => Array
(
[id] => centos6-64
[name] => CentOS 6 - 64 bit
[version] => 6
[architecture] => 64
[os] => centos
)
[4] => Array
(
[id] => ubuntu10-32
[name] => Ubuntu 10 - 32 bit
[version] => 10
[architecture] => 32
[os] => ubuntu
)
[5] => Array
(
[id] => ubuntu10-64
[name] => Ubuntu 10 - 64 bit
[version] => 10
[architecture] => 64
[os] => ubuntu
)
)
如果您正在使用PHP＆gt; = 5.3（当然是你，为什么不是你）你可以省略讨厌的tmp函数定义并使用酷匿名函数进行映射：
// an array of xml objects:
$oses = array_map(function($os) {
return array_values((array)$os);
}, $oses);