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HomeBackend DevelopmentPHP TutorialPHP中的生成XML文件的4种方法分享_PHP

生成如下XML串
Xml代码
复制代码 代码如下:


   
        title1
        content1
        2009-10-11
   

   
        title2
        content2
        2009-11-11
   



方法I.【直接生成字符串】
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!
复制代码 代码如下:
$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 = "\n";
$xml .= "
\n";
foreach ($data_array as $data) {
$xml .= create_item($data['title'], $title_size, $data['content'], $data['pubdate']);
}
$xml .= "
\n";
echo $xml;
//  创建XML单项
function create_item($title_data, $title_size, $content_data, $pubdate_data)
{
    $item = "\n";
    $item .= "" . $title_data . "\n";
    $item .= "" . $content_data . "\n";
    $item .= " " . $pubdate_data . "\n";
    $item .= "
\n";
    return $item;
}
?>

方法2:【DomDocument】
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
复制代码 代码如下:
$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
?>

方法3:【XMLWriter】
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
复制代码 代码如下:
$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();
?>

方法4: 【SimpleXML】
使用SimpleXML创建XML文档
复制代码 代码如下:
$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;
$xml = simplexml_load_string($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();
?>

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