PHP中的生成XML文件的4种方法

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<?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>

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<?PHP
$data_array = array(
array(
'title' => 'title1',
'content' => 'content1',
'pubdate' => '2009-10-11',
),
array(
'title' => 'title2',
'content' => 'content2',
'pubdate' => '2009-11-11',
)
);
$title_size = 1;

$xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
$xml .= "<article>\n";

foreach ($data_array as $data) {
$xml .= create_item($data['title'], $title_size, $data['content'], $data['pubdate']);
}

$xml .= "</article>\n";

echo $xml;

//  创建XML单项
function create_item($title_data, $title_size, $content_data, $pubdate_data) {
$item = "<item>\n";
$item .= "<title size=\"" . $title_size . "\">" . $title_data . "</title>\n";
$item .= "<content>" . $content_data . "</content>\n";
$item .= " <pubdate>" . $pubdate_data . "</pubdate>\n";
$item .= "</item>\n";

return $item;
}

?>

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<?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
?>

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<?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
)
);

$xml = new XMLWriter();
$xml->openUri("php://output");  //  输出方式，也可以设置为某个xml文件地址，直接输出成文件
$xml->setIndentString('  ');
$xml->setIndent(true);

$xml->startDocument('1.0', 'utf-8');    //  开始创建文件
//  根结点
$xml->startElement('article');

foreach ($data_array as $data) {
$xml->startElement('item');

if (is_array($data)) {
foreach ($data as $key => $row) {
$xml->startElement($key);

if (isset($attribute_array[$key]) && is_array($attribute_array[$key])) {
foreach ($attribute_array[$key] as $akey => $aval) {    //  设置属性值
$xml->writeAttribute($akey, $aval);
}

}

$xml->text($row);   //  设置内容
$xml->endElement(); // $key
}

}
$xml->endElement(); //  item
}

$xml->endElement(); //  article
$xml->endDocument();

$xml->flush();
?>

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<?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
)
);

$string = <<<XML
<?xml version='1.0' encoding='utf-8'?>
<article>
</article>
XML;

$xml = simplexml_load_string($string);

foreach ($data_array as $data) {
$item = $xml->addChild('item');
if (is_array($data)) {
foreach ($data as $key => $row) {
$node = $item->addChild($key, $row);

if (isset($attribute_array[$key]) && is_array($attribute_array[$key])) {
foreach ($attribute_array[$key] as $akey => $aval) {    //  设置属性值
$node->addAttribute($akey, $aval);
}
}
}
}
}
echo $xml->asXML();
?>