$xmldoc = new DOMdocument('1.0', 'UTF-8');$xmldoc->load('datas.xml');$itemsNodeList = $xmldoc->getElementsbyTagName('学生');$itemElement = $itemsNodeList->item(0);//得到第一个完整的学生信息节点$itemChildsNodeList = $itemElement->getElementsbyTagName('名字');//得到子节点“名字”，也许有多个名字$itemChildNode = $itemChildsNodeList->item(0);//得到第一个名字节点echo $itemChildNode->nodevalue;//输出节点值//封装成函数$nodeArr = array('名字', '年龄', '介绍'); function getNodeval($xmldoc, $itemsName, $nodeArr){ $items = $xmldoc->getElementsByTagName($itemsName); for($i=0; $i < $items->length; $i++){ $item = $items->item($i); foreach($nodeArr as $node){ $data[$i][] = $item->getElementsByTagName($node)->item(0)->nodevalue; } } return $data;}$data = getNodeval($xmldoc, '学生', $nodeArr);print_r($data);//添加节点$xmldoc = new DOMdocument('1.0', 'UTF-8');$xmldoc->load('datas.xml');$items = $xmldoc->getElementsByTagName('班级')->item(0);//根节点$student = $xmldoc->createElement('学生');//创建一个新的学生节点$stu_name = $xmldoc->createElement('名字','张三');$stu_age = $xmldoc->createElement('年龄','15');$stu_intro = $xmldoc->createElement('介绍','动手能力强且成绩稳定');$items->appendChild($student);$student->appendChild($stu_name);$student->appendChild($stu_age);$student->appendChild($stu_intro);$bytes = $xmldoc->save('datas.xml'); echo ($bytes)? "写入了: $bytes 字节" : '保存失败';//删除节点$xmldoc = new DOMdocument('1.0', 'UTF-8');$xmldoc->load('datas.xml');$student = $xmldoc->getElementsByTagName('学生')->item(2);//直接找到要删除的节点$student->parentNode->removeChild($student);//父节点的删除方法$xmldoc->save('datas.xml');//修改节点值$student = $xmldoc->getElementsByTagName('学生')->item(2);$student->getElementsByTagName('年龄')->item(0)->nodevalue += 10;$student->setAttribute('id', '110');$xmldoc->save('datas.xml');//应用 Xpath 查找节点$xml = new DOMdocument('1.0', 'UTF-8');$xml->load('dat.xml');$xpath = new DOMXPath($xml);$nodeList = $xpath->query('/aaa/bbb/ddd/fff');echo $nodeList->item(0)->nodevalue;//SimpleXML 类操作 xml$xml = simplexml_load_file('books.xml');$books = $xml->book;echo $books[1]->title . $books[1]['house'];//直接指向第二本书foreach($xml as $item){ echo $item->title,' ',$item['house'],'
';}更多解析php DOMElement 操作xml 文档的实现代码相关文章请关注PHP中文网！
