XML/PHP-从多个文档节点提取信息

我想知道是否有人能帮我写一些代码

我有一个KML（Google Earth XML），我正试图将它导入到我的应用程序中

我遇到的问题是，在提取数据时，它一直工作到第一个节点，并且不会处理文件的其余部分

KML文件非常庞大，因此我将在下面展示一个示例：

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/Atom">
<Folder>
    <name>Kalamunda</name>
    <open>1</open>
    <Document>
        <name>Export 1418786594.kml</name>
        <Placemark>
            <name>76-122 Tourist Drive 207</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.072723865509,-31.98064436184923,0</coordinates>
            </Point>
        </Placemark>
        <Placemark>
            <name>76-122 Tourist Drive 207</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.0731288790703,-31.98067621355563,0</coordinates>
            </Point>
        </Placemark>
        <Placemark>
            <name>76-122 Tourist Drive 207</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.0735687613487,-31.98064436184923,0</coordinates>
            </Point>
        </Placemark>
        <Placemark>
            <name>12 Hinkler Rd</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.0740676522255,-31.98083319680418,0</coordinates>
            </Point>
        </Placemark>
    </Document>
    <Document>
        <name>Export 1418785221.kml</name>
        <Placemark>
            <name>LOT 435 Collins Rd</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.0624188184738,-31.97887202447751,0</coordinates>
            </Point>
        </Placemark>
        <Placemark>
            <name>25 Central Rd</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.0589158535004,-31.9744125903374,0</coordinates>
            </Point>
        </Placemark>
        <Placemark>
            <name>49 Canning Rd</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.0574942827225,-31.97629422494352,0</coordinates>
            </Point>
        </Placemark>
        <Placemark>
            <name>13 Anne Ave</name>
            <description>Walliston WA 6076</description>
            <Point>
                <coordinates>116.0673272609711,-31.99400063250859,0</coordinates>
            </Point>
        </Placemark>
    </Document>
    <Document>
        <name>Export 1418783501.kml</name>
        <Placemark>
            <name>3 Lookout Rd</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.037417948246,-31.98043960061557,0</coordinates>
            </Point>
        </Placemark>
        <Placemark>
            <name>9 Ozone Terrace</name>
            <description>Kalamunda WA 6076</description>
            <Point>
                <coordinates>116.0382279753685,-31.98028261669366,0</coordinates>
            </Point>
        </Placemark>
    </Document>
</Folder>
</kml>

使用这段代码，它将提取数据直到12 Hinkler Rd placemark，我认为因为有一个结束标记，它不会再进一步

如果给定一个这种格式的XML，我将如何提取所有数据

任何帮助都将不胜感激

干杯，

所有

节点最容易通过XPath查询获得。由于位于

kml

命名空间下，因此可以查询

//kml:Placemark

。

/

将在XML中的任何级别搜索表达式

Placemark

我们可以通过巧妙地结合您已经拥有的

explode（）

来大大简化您最初拥有的循环的内部工作。嵌套

explode（）

在

array_slice（）

中，检索前两个坐标分量并丢弃第三个（

，0

）可以在一个操作中完成，并立即将它们分配给数组键

['coordinates']

此外，您可以直接将一个新的子数组粘贴到

$data

集合数组上，而不是维护递增的

$i

// Query all <Placemark> elements at once
$placemarks = $xml_data->xpath('//kml:Placemark');
// Loop over them and construct an array of child properties

$data = array();
foreach ($placemarks as $mark) {
  // Collect the properties into a new array and append
  // that to $data with []
  $data[] = array(
    // Cast SimpleXML elements to strings with (string)
    'name' => (string)$mark->name,
    'description' => (string)$mark->description,
    // Get the coords in one action - explode on the ','
    // but return only the first two elements via array_slice()
    'coordinates' => array_slice(explode(',', $mark->Point->coordinates), 0, 2)
  );
}
print_r($data);
// Displays:
Array
(
    [0] => Array
        (
            [name] => 76-122 Tourist Drive 207
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.072723865509
                    [1] => -31.98064436184923
                )

        )

    [1] => Array
        (
            [name] => 76-122 Tourist Drive 207
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.0731288790703
                    [1] => -31.98067621355563
                )

        )

    [2] => Array
        (
            [name] => 76-122 Tourist Drive 207
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.0735687613487
                    [1] => -31.98064436184923
                )

        )
    ... SNIP.... 
    ... SNIP.... 
    ... SNIP....    
    [8] => Array
        (
            [name] => 3 Lookout Rd
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.037417948246
                    [1] => -31.98043960061557
                )

        )

    [9] => Array
        (
            [name] => 9 Ozone Terrace
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.0382279753685
                    [1] => -31.98028261669366
                )

        )

)

//一次查询所有元素
$placemarks=$xml_data->xpath（'//kml:Placemark'）；
//循环它们并构造一个子属性数组
$data=array（）；
foreach（$placemarks作为$mark）{
//将属性收集到新数组中并追加
//使用[]将其转换为$data
$data[]=数组(
//将SimpleXML元素强制转换为具有（字符串）的字符串
'name'=>（字符串）$mark->name，
'description'=>（字符串）$mark->description，
//在一个动作中获得坐标-在“，”上爆炸
//但仅通过数组_slice（）返回前两个元素
“坐标”=>array_切片（分解（“，”，$mark->Point->coordinates），0,2）
);
}
打印（数据）；
//显示：
排列
(
[0]=>阵列
(
[名称]=>76-122旅游大道207
[说明]=>卡拉姆达WA 6076
[坐标]=>数组
(
[0] => 116.072723865509
[1] => -31.98064436184923
)
)
[1] =>阵列
(
[名称]=>76-122旅游大道207
[说明]=>卡拉姆达WA 6076
[坐标]=>数组
(
[0] => 116.0731288790703
[1] => -31.98067621355563
)
)
[2] =>阵列
(
[名称]=>76-122旅游大道207
[说明]=>卡拉姆达WA 6076
[坐标]=>数组
(
[0] => 116.0735687613487
[1] => -31.98064436184923
)
)
剪
剪
剪
[8] =>阵列
(
[名称]=>Lookout路3号
[说明]=>卡拉姆达WA 6076
[坐标]=>数组
(
[0] => 116.037417948246
[1] => -31.98043960061557
)
)
[9] =>阵列
(
[名称]=>9臭氧露台
[说明]=>卡拉姆达WA 6076
[坐标]=>数组
(
[0] => 116.0382279753685
[1] => -31.98028261669366
)
)
)

这是您感兴趣的

地名-名称、描述、坐标？是@MichaelBerkowskiHey，谢谢。。我收到一个错误，它说unexpected[在有$data=[]的行上；您不能使用PHP5.4。请使用
$data=array（）。
代替。同样，在循环中，您需要
$data[]=array（…）
代替
$data[]=[…]
Darn-这可能是我第一次在回答中使用5.4+数组语法，希望安装基数最终足够高：-（@BigJobbies）我刚刚编辑过，将其转换回旧式的
array（）
声明。我想有一天……很高兴能提供帮助。祝你好运。
// Query all <Placemark> elements at once
$placemarks = $xml_data->xpath('//kml:Placemark');
// Loop over them and construct an array of child properties

$data = array();
foreach ($placemarks as $mark) {
  // Collect the properties into a new array and append
  // that to $data with []
  $data[] = array(
    // Cast SimpleXML elements to strings with (string)
    'name' => (string)$mark->name,
    'description' => (string)$mark->description,
    // Get the coords in one action - explode on the ','
    // but return only the first two elements via array_slice()
    'coordinates' => array_slice(explode(',', $mark->Point->coordinates), 0, 2)
  );
}
print_r($data);
// Displays:
Array
(
    [0] => Array
        (
            [name] => 76-122 Tourist Drive 207
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.072723865509
                    [1] => -31.98064436184923
                )

        )

    [1] => Array
        (
            [name] => 76-122 Tourist Drive 207
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.0731288790703
                    [1] => -31.98067621355563
                )

        )

    [2] => Array
        (
            [name] => 76-122 Tourist Drive 207
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.0735687613487
                    [1] => -31.98064436184923
                )

        )
    ... SNIP.... 
    ... SNIP.... 
    ... SNIP....    
    [8] => Array
        (
            [name] => 3 Lookout Rd
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.037417948246
                    [1] => -31.98043960061557
                )

        )

    [9] => Array
        (
            [name] => 9 Ozone Terrace
            [description] => Kalamunda WA 6076
            [coordinates] => Array
                (
                    [0] => 116.0382279753685
                    [1] => -31.98028261669366
                )

        )

)