PHP 运用 XMLWriter 读写 xml 文件

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<?php/** * mimvp.com * 2017.06.22 */ header("Content-type: text/html; charset=utf-8");$xml = new XMLWriter(); $xml->openUri("php://output");   // 输出到网页控制台$xml->openUri("mimvp.xml");      // 输出到文件，需要读写权限，推荐 chmod 766 mimvp.xml // 设置缩进字符串$xml->setIndentString("\t");$xml->setIndent(true); // xml文档开始$xml->startDocument('1.0', 'utf-8'); // 创建根节点$xml->startElement("MimvpInfo");     // 节点1    $xml->startElement("Item");        $xml->writeAttribute("info","1");    // 属性            $xml->startElement("id");            $xml->text("01");            $xml->endElement();                         $xml->startElement("name");            $xml->text("米扑代理");            $xml->endElement();    $xml->endElement();         // 节点2    $xml->startElement("Item");        $xml->writeAttribute("info","1");    // 属性            $xml->startElement("id");            $xml->text("02");            $xml->endElement();                         $xml->startElement("name");            $xml->text("米扑财富");            $xml->endElement();    $xml->endElement();         $xml->endElement();$xml->endDocument(); //header("Content-type: text/xml");//取得缓冲区里的xml字符串//echo $xml->outputMemory();  ?>

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<?xml version="1.0" encoding="UTF-8"?><MimvpInfo>    <Item info="1">        <id>01</id>        <name>米扑代理</name>    </Item>    <Item info="1">        <id>02</id>        <name>米扑财富</name>    </Item></MimvpInfo>

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<?php/** * mimvp.com * 2017.06.22 */ header ( "Content-type: text/html; charset=utf-8" );$xml = new XMLReader (); // 载入xml文件，如果是字符串直接使用xml方法$xml->open ( "mimvp.xml" ); // 开始读取xmlwhile ( $xml->read () ) {    // 根据节点类型和元素名称取得文本节点或属性    if ($xml->nodeType == XMLREADER::ELEMENT && $xml->localName == 'item') {        print $xml->getAttribute ( "info" ) . "</br>";    }    if ($xml->nodeType == XMLREADER::ELEMENT && $xml->localName == 'id') {        $xml->read ();   // 移动指针到下一个节点        print $xml->value . "\t";    }    if ($xml->nodeType == XMLREADER::ELEMENT && $xml->localName == 'name') {        $xml->read ();           print $xml->value . "</br>";    }    if ($xml->nodeType == XMLREADER::ELEMENT && $xml->localName == 'age') {        $xml->read ();        print $xml->value . "</br>";    }}?>