在PHP中解析Microsoft XML

Question

我有一个XML文件( Word文档的一部分)，它是非常简单的XML：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/custom-properties" xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"><property fmtid="{D5CDD505-2E9C-101B-9397-08002B2CF9AE}" pid="2" name="Matter"><vt:lpwstr>30738</vt:lpwstr></property><property fmtid="{D5CDD505-2E9C-101B-9397-08002B2CF9AE}" pid="3" name="Document number"><vt:lpwstr>999999</vt:lpwstr></property></Properties>

然而，当我用SimpleXML解析它时，我得到了<property>项的所有属性，但不能访问这些值(例如，<vt:lpwstr>999999</vt:lpwstr>)。

$custom = simplexml_load_string($xml);
print_r($custom);

// Results in:
SimpleXMLElement Object
(
    [property] => Array
        (
            [0] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [fmtid] => {D5CDD505-2E9C-101B-9397-08002B2CF9AE}
                            [pid] => 2
                            [name] => Matter
                        )

                )
            [1] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [fmtid] => {D5CDD505-2E9C-101B-9397-08002B2CF9AE}
                            [pid] => 3
                            [name] => Document number
                        )
                )
        )
)

我遗漏了什么？

谢谢!

Answer 1

显然，这里的print_r()不会输出带有非默认名称空间的XML节点，例如示例中的lpwstr。

但是您可以使用XPath表达式验证所有节点信息是否可用。三个例子：

代码：

<?php
    $xml = <<<XML
    <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
    <Properties 
        xmlns="http://schemas.openxmlformats.org/officeDocument/2006/custom-properties" 
        xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes">
            <property fmtid="{D5CDD505-2E9C-101B-9397-08002B2CF9AE}" pid="2" name="Matter">
                <vt:lpwstr>30738</vt:lpwstr>
            </property>
            <property fmtid="{D5CDD505-2E9C-101B-9397-08002B2CF9AE}" pid="3" name="Document number">
                <vt:lpwstr>999999</vt:lpwstr>
            </property>
        </Properties>
    XML;
    $xmlobj = new SimpleXMLElement($xml);
    $lpwstr = $xmlobj->xpath('//vt:lpwstr');
    print_r($lpwstr);
    $lpwstr = $xmlobj->xpath('//*[local-name()="lpwstr"]');
    print_r($lpwstr);
    $lpwstr = $xmlobj->xpath('//*');
    print_r($lpwstr);
?>

输出：

Array
(
    [0] => SimpleXMLElement Object
        (
            [0] => 30738
        )

    [1] => SimpleXMLElement Object
        (
            [0] => 999999
        )

)
Array
(
    [0] => SimpleXMLElement Object
        (
            [0] => 30738
        )

    [1] => SimpleXMLElement Object
        (
            [0] => 999999
        )

)
Array
(
    [0] => SimpleXMLElement Object
        (
            [property] => Array
                (
                    [0] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [fmtid] => {D5CDD505-2E9C-101B-9397-08002B2CF9AE}
                                    [pid] => 2
                                    [name] => Matter
                                )

                        )

                    [1] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [fmtid] => {D5CDD505-2E9C-101B-9397-08002B2CF9AE}
                                    [pid] => 3
                                    [name] => Document number
                                )

                        )

                )

        )

    [1] => SimpleXMLElement Object
        (
            [@attributes] => Array
                (
                    [fmtid] => {D5CDD505-2E9C-101B-9397-08002B2CF9AE}
                    [pid] => 2
                    [name] => Matter
                )

        )

    [2] => SimpleXMLElement Object
        (
            [0] => 30738
        )

    [3] => SimpleXMLElement Object
        (
            [@attributes] => Array
                (
                    [fmtid] => {D5CDD505-2E9C-101B-9397-08002B2CF9AE}
                    [pid] => 3
                    [name] => Document number
                )

        )

    [4] => SimpleXMLElement Object
        (
            [0] => 999999
        )

)

使用PHP 7.3