php读取xml的问题
我有一个这样的XML文件,我想把question、oid、content都输出,而且输出的格式为:
问题:542
选项:A 内容:1111111
选项:B 内容:2222222
问题:123
选项:C 内容:3333333
选项:D 内容:4444444
应该如何做?
<?xml version="1.0" encoding="utf-8"?><br /><parent><br /> <title>3</title><br /> <author>admin</author><br /> <contentall><br /> <subject><br /> <question>542</question><br /> <option><br /> <oid>A</oid><br /> <content>1111111</content><br /> </option><br /> <option><br /> <oid>B</oid><br /> <content>2222222</content><br /> </option><br /> </subject><br /> <subject><br /> <question>123</question><br /> <option><br /> <oid>C</oid><br /> <content>3333333</content><br /> </option><br /> <option><br /> <oid>D</oid><br /> <content>4444444</content><br /> </option><br /> </subject><br /> </contentall><br /></parent><br />
$s =<?xml version="1.0" encoding="utf-8"?><br><parent><br> <title>3</title><br> <author>admin</author><br> <contentall><br> <subject><br> <question>542</question><br> <option> <br> <oid>A</oid><br> <content>1111111</content><br> </option> <br> <option> <br> <oid>B</oid><br> <content>2222222</content><br> </option> <br> </subject><br> <subject><br> <question>123</question><br> <option> <br> <oid>C</oid><br> <content>3333333</content><br> </option> <br> <option> <br> <oid>D</oid><br> <content>4444444</content><br> </option> <br> </subject><br> </contentall><br></parent><br>XML;<br><br>$xml = simplexml_load_string($s);<div class="clear"> </div>