在PHP中解析XML，返回多个值

Question

我需要获取“name”标签的值，其中tag是“required”和“optional”。如何在PHP中完成？ 我想要的结果如下： 必需 - 二进制名称，doc测试名称 可选 - doc name1，doc name2，doc name3

<?xml version="1.0" encoding="UTF-8"?>
<test>
    <required>
        <item type="binary">
            <name>binary name</name>
            <url visibility="restricted">test.exe</url>
        </item>
        <item type="document" subtype="mytype">
            <name>doc test name</name>
            <url visiblity="visible">my.pdf</url>
        </item>
    </required>
    <optional>
        <item type="document">
            <name>doc name1</name>
            <url visiblity="visible">user_guide1.pdf</url>
        </item>
        <item type="document2">
            <name>doc name2</name>
            <url visiblity="visible">user_guide2.pdf</url>
        </item>

        <item type="document3">
            <name>doc name3</name>
            <url visiblity="visible">user_guide3.pdf</url>
        </item>
    </optional>
    <dependencies>
        <dependency>
            <url>test4.xml</url>
        </dependency>
    </dependencies>
</test>

Answer 1

您可以使用XML Parser或SimpleXML。

$xml = new SimpleXMLElement($yourXml);

Answer 2

SimpleXML with XPath：http://www.php.net/manual/en/simplexmlelement.xpath.php

$xmlSrc =<<<XML
<test>
    <required>
        <item type="binary">
            <name>binary name</name>
            <url visibility="restricted">test.exe</url>
        </item>
        <item type="document" subtype="mytype">
            <name>doc test name</name>
            <url visiblity="visible">my.pdf</url>
        </item>
    </required>
    <optional>
        <item type="document">
            <name>doc name1</name>
            <url visiblity="visible">user_guide1.pdf</url>
        </item>
        <item type="document2">
            <name>doc name2</name>
            <url visiblity="visible">user_guide2.pdf</url>
        </item>

        <item type="document3">
            <name>doc name3</name>
            <url visiblity="visible">user_guide3.pdf</url>
        </item>
    </optional>
    <dependencies>
        <dependency>
            <url>test4.xml</url>
        </dependency>
    </dependencies>
</test>
XML;


$xml = new SimpleXMLElement($xmlSrc);

$required_names = $xml->xpath('/test/required/item/name');
$optional_names = $xml->xpath('/test/optional/item/name');


print_r($required_names);
print_r($optional_names);