php中最内部子节点的XML解析

Question

我正在解析一个 XML 文件，谁能帮我解析最后一个也是最里面的子节点。

<section index="2.2.4" title="Recommendation" ref="RECOMMENDATION">
          <text>DWS strongly recommends that all authentication credentials should be configured with a strong password.</text>
          <text>DWS recommends that:</text>
          <list type="bullet">
            <listitem>passwords should be at least eight characters in length;</listitem>
            <listitem>characters in the password should not be repeated more than five times;</listitem>
            <listitem>passwords should include both upper case and lower case characters;</listitem>
            <listitem>passwords should include numbers;</listitem>
            <listitem>passwords should include punctuation characters;</listitem>
            <listitem>passwords should not include the username;</listitem>
            <listitem>passwords should not include a device's name, make or model;</listitem>
            <listitem>passwords should not be based on dictionary words.</listitem>
          </list>
          <text>Notes for Cisco Catalyst Switch devices:</text>
          <text>The following commands can be used on Cisco Catalyst Switch devices to set the enable password, create a local user with a password and to delete a local user:<code><command>enable secret <cmduser>password</cmduser></command>
<command>username <cmduser>user</cmduser> secret <cmduser>password</cmduser></command>
<command>no username <cmduser>user</cmduser></command>
</code></text>
        </section>

谁能帮助解析 PHP 中的这个最里面的子节点？

 <code><command>enable secret <cmduser>password</cmduser></command>
    <command>username <cmduser>user</cmduser> secret <cmduser>password</cmduser></command>
    <command>no username <cmduser>user</cmduser></command>
    </code></text>
            </section>

尤其是这个命令cmd用户命令？？？

Answer 1

根据您想要的数据部分，您可以将其加载到 SimpleXML 中，然后使用 XPath 搜索 <code> 元素，因此基本版本将是...

$fileName = "out.xml";
$xml = simplexml_load_file($fileName);

$code = $xml->xpath("//code");
echo "command=".trim($code[0]->command).PHP_EOL;
echo "cmduser=".trim($code[0]->command->cmduser).PHP_EOL;
echo "cmduser=".trim($code[0]->command[1]->cmduser[0]).PHP_EOL;

会给你（带有测试数据）...

command=enable secret
cmduser=password
cmduser=user

或者，如果您想选择包含用户名和密码的 <command> 元素，您可以使用 XPath 选择包含 2 个 <cmduser> 元素的元素...

$code = $xml->xpath("//code/command[count(cmduser)=2]");
echo "cmduser1=".trim($code[0]->cmduser[0]).PHP_EOL;
echo "cmduser2=".trim($code[0]->cmduser[1]).PHP_EOL;

哪个给

cmduser1=user
cmduser2=password