php中DOMDocument与SimpleXML创建与解析xml程序

<?php
$xmlDoc = new DOMDocument();
$xmlDoc->load("note.xml");

print $xmlDoc->saveXML();
?>

<?php
//创建一个新文档
$dom = new DOMDocument('1.0');
 
//创建根元素book，并将其添加到文档中
$book = $dom->appendChild($dom->createElement('book'));
 
//创建一个title元素，并将其添加到$book中
$title = $book->appendChild($dom->createElement('title'));
$title->appendChild($dom->createTextNode('Php Book'));
//为title元素的添加属性cover,属性值soft
$title->setAttribute('cover','soft');
 
//创建author元素，并将其添加到$book中
$kaifabu = $book->appendChild($dom->createElement('author'));
//为author元素添加文本
$kaifabu->appendChild($dom->createTextNode('kaifabu'));
 
//创建author元素，并将其添加到$book中
$kaifabu = $book->appendChild($dom->createElement('author'));
//为author元素添加文本
$kaifabu->appendChild($dom->createTextNode('Younker'));
 
//将格式化的DOM文档输出为XML
$dom->formatOutput = true;
 
//生成books.xml文件
$dom->save('books.xml');
//此步把生成的XML以字符串形式显示
echo htmlentities($dom->saveXML());
?>

<?xml version="1.0" ?>
<book>
  <title cover="soft">Php Book</title>
  <author>kaifabu</author>
  <author>Younker</author>
</book>

function xmlToArr ($xml, $root = true) {

  if (!$xml->children()) {
   return (string) $xml;
  }
  $array = array();
  foreach ($xml->children() as $element => $node) {
   $totalElement = count($xml->{$element});
   if (!isset($array[$element])) {
    $array[$element] = "";
   }
   // Has attributes
   if ($attributes = $node->attributes()) {
    $data = array(
     'attributes' => array(),
     'value' => (count($node) > 0) ? $this->__xmlToArr($node, false)

: (string) $node
    );
    foreach ($attributes as $attr => $value) {
     $data['attributes'][$attr] = (string) $value;
    }
    if ($totalElement > 1) {
     $array[$element][] = $data;
    } else {
     $array[$element] = $data;
    }
   // Just a value
   } else {
    if ($totalElement > 1) {
     $array[$element][] = $this->__xmlToArr($node, false);
    } else {
     $array[$element] = $this->__xmlToArr($node, false);
    }
   }
  }
  if ($root) {
   return array($xml->getName() => $array);
  } else {
   return $array;
  }

 }

<?xml version="1.0" encoding="utf-8"?>
<article>
    <item>
        <title size="1">title1</title>
        <content>content1</content>
        <pubdate>2009-10-11</pubdate>
    </item>
    <item>
        <title size="1">title2</title>
        <content>content2</content>
        <pubdate>2009-11-11</pubdate>
    </item>
</article>

 <?PHP
$data_array = array(
    array(
    'title' => 'title1',
    'content' => 'content1',
        'pubdate' => '2009-10-11',
    ),
    array(
    'title' => 'title2',
    'content' => 'content2',
    'pubdate' => '2009-11-11',
    )
);
 
//  属性数组
$attribute_array = array(
    'title' => array(
    'size' => 1
    )
);
 
//  创建一个XML文档并设置XML版本和编码。。
$dom=new DomDocument('1.0', 'utf-8');
 
//  创建根节点
$article = $dom->createElement('article');
$dom->appendchild($article);
 
foreach ($data_array as $data) {
    $item = $dom->createElement('item');
    $article->appendchild($item);
 
    create_item($dom, $item, $data, $attribute_array);
}
 
echo $dom->saveXML();
 
function create_item($dom, $item, $data, $attribute) {
    if (is_array($data)) {
        foreach ($data as $key => $val) {
            //  创建元素
            $$key = $dom->createElement($key);
            $item->appendchild($$key);
 
            //  创建元素值
            $text = $dom->createTextNode($val);
            $$key->appendchild($text);
 
            if (isset($attribute[$key])) {  //  如果此字段存在相关属性需要设置
                foreach ($attribute[$key] as $akey => $row) {
                    //  创建属性节点
                    $$akey = $dom->createAttribute($akey);
                    $$key->appendchild($$akey);
 
                    // 创建属性值节点
                    $aval = $dom->createTextNode($row);
                    $$akey->appendChild($aval);
                }
            }   //  end if
        }
    }   //  end if
}   //  end function
?>

CREATE TABLE `student` (

`id` int(11) NOT NULL auto_increment,

`name` varchar(50) NOT NULL,

`sex` varchar(10) NOT NULL,

`age` smallint(3) NOT NULL default ’0′,

PRIMARY KEY (`id`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8;

include_once ("connect.php"); //连接数据库

$sql = "select * from student";

$result = mysql_query($sql) or die("Invalid query: " . mysql_error());

while ($row = mysql_fetch_array($result)) {

$arr[] = array(

‘name’ => $row['name'],

‘sex’ => $row['sex'],

‘age’ => $row['age']

);

}

$doc = new DOMDocument(’1.0′, ‘utf-8′); // 声明版本和编码

$doc->formatOutput = true;

$r = $doc->createElement("root");

$doc->appendChild($r);

 
foreach ($arr as $dat) {

$b = $doc->createElement("data");

 
$name = $doc->createElement("name");

$name->appendChild($doc->createTextNode($dat['name']));

$b->appendChild($name);

 
$sex = $doc->createElement("sex");

$sex->appendChild($doc->createTextNode($dat['sex']));

$b->appendChild($sex);
 

$age = $doc->createElement("age");

$age->appendChild($doc->createTextNode($dat['age']));

$b->appendChild($age);

 
$r->appendChild($b);

}
 

echo $doc->saveXML();

<?xml version="1.0″ encoding="utf-8″?>

<root>

<data>

<name>李王皓</name>

<sex>男</sex>

<age>21</age>

</data>

…

</root>

header("Content-type:text/html; Charset=utf-8″);

$url = "你的xml路么";

$reader = new XMLReader(); //实例化XMLReader

$reader->open($url); //获取xml

$i=1;

while ($reader->read()) {

if ($reader->nodeType == XMLReader::TEXT) { //判断node类型

$m = $i%3;

if($m==1)

$name = $reader->value; //读取node值

if($m==2)

$sex = $reader->value;

if($m==0){

$age = $reader->value;

$arr[] = array(

‘name’ => $name,

‘sex’ => $sex,

‘age’ => $age

);

}

$i++;

}

}

//print_r($arr);

<?php
// The file test.xml contains an XML document with a root element
// and at least an element /[root]/title.

if (file_exists('test.xml')) {
    $xml = simplexml_load_file('test.xml');

    var_dump($xml);
} else {
    exit('Failed to open test.xml.');
}
?> 

This script will display, on success:

SimpleXMLElement Object
(
  [title] => Example Title
  ...
)
 

<Result value="true" message="Success!">
  <Item ID="8861" UserName="30121740" NickName="&#x1A;ǒˇFEΙでァ" Grade="16" Repute="168" Sex="false" WinCount="138" TotalCount="229" ConsortiaName="圣域" Rename="false" ConsortiaRename="false" EscapeCount="0" IsFirst="31" FightPower="3032" />
</Result>

<Result value="true" message="Success!">
  <Item ID="7" UserName="13792776" NickName="龙哥" Grade="1" Repute="313119" Sex="true" WinCount="0" TotalCount="0" ConsortiaName="" Rename="false" ConsortiaRename="false" EscapeCount="0" IsFirst="34" FightPower="0" />
</Result>

header("content-type:text/html; charset=utf-8"); //设置编码
$xml = simplexml_load_file('a.xml');  //载入xml文件 $lists和xml文件的根节点是一样的
echo $xml->company."<br>";
echo $xml->town."<br>id:";
echo $xml->town['id']."<br>parent:";
echo $xml->town['parent']."<br>";

echo "<br>循环读取:<br>";
foreach($xml->user as $users){     //有多个user，取得的是数组，循环输出
    echo "-------------------<br>";
    echo "姓名:".$users->name."<br>";
    echo "编号:".$users->age."<br>";
    echo "性别:".$users->age['sex']."<br>";
    echo "序号:".$users->height."<br>";
}

echo "<br>循环读取:<br>";
foreach($xml->town as $towns){     //有多个user，取得的是数组，循环输出
    echo "-------------------<br>";
    echo "id:".$towns['id']."<br>";
    echo "归属:".$towns['parent']."<br>";
    echo "地区:".$towns."<br>";
}