使用PHP生成XML文件的四种方法
<?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>
【直接生成字符串】
方法1:使用纯粹的PHP代码生成字符串,并把这个字符串写入一个以XML为后缀的文件。这是最原始的生成XML的方法,不过有效!
PHP代码如下:
<?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"?>";
$xml .= "<article>";
foreach ($data_array as $data) {
$xml .= create_item($data[‘title’], $title_size, $data[‘content’], $data[‘pubdate’]);
}
$xml .= "</article>";
echo $xml;
// 创建XML单项
function create_item($title_data, $title_size, $content_data, $pubdate_data)
{
$item = "<item>";
$item .= "<title size="" . $title_size . "">" . $title_data . "</title>";
$item .= "<content>" . $content_data . "</content>";
$item .= " <pubdate>" . $pubdate_data . "</pubdate>";
$item .= "</item>";
return $item;
}
?>
【DomDocument】
方法2:使用DomDocument生成XML文件
创建节点使用createElement方法,
创建文本内容使用createTextNode方法,
添加子节点使用appendChild方法,
创建属性使用createAttribute方法
PHP代码如下:
<?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
?>
【XMLWriter】
方法3:使用XMLWriter类创建XML文件
此方法在PHP 5.1.2后有效
另外,它可以输出多种编码的XML,但是输入只能是utf-8
PHP代码如下:
<?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();
?>
【SimpleXML】
方法4:使用SimpleXML创建XML文档
<?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();
?>
波比源码 » 使用PHP生成XML文件的四种方法
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