将XML节点复制到XML节点集合（PHP）

Question

我有一些电影中的数据的XML，我想用所有电影制作一个XML ..我该怎么做？

这是电影XML的例子：

<movie> 
<popularity>0.018</popularity> 
<translated>true</translated> 
<adult>false</adult> 
<language>en</language> 
<original_name>Return to Rajapur</original_name> 
<name>Return to Rajapur</name> 
<alternative_name>Retorno a Rajapur</alternative_name> 
<type>movie</type> 
<id>80261</id> 
<imdb_id>tt0444415</imdb_id> 
<url>http://www.themoviedb.org/movie/80261</url> 
<overview> 
A doomed love affair blooms against the beautiful and exotic backdrop of the deserts of India in this romantic drama. Samantha Hartley (Kelli Garner) is a woman in her early twenties who travels to Rajapur in India to visit a resort where her mother stayed years ago. While tracing the steps of her mother, Sara (Lynn Collins), Samantha learns the true story about her mother's stormy marriage to Jeremy (Justin Theroux), a charming but moody alcoholic. Only a few days after their wedding, Sara began to wonder if marrying Jeremy was a mistake, and while visiting India on their honeymoon, Sara met Jai Singh (Manoj Bajpai), a handsome and sensitive widower living in Rajapur. Jai Singh, who speaks fluent English, soon strikes up a friendship with Sara that quickly grows into a romance, but both are aware of the transgressive nature of their love, and their affair takes a tragic turn, leaving its scars on all parties involved. 
</overview> 
<votes>0</votes> 
<rating>0.0</rating> 
<tagline/> 
<certification/> 
<released>2006-11-01</released> 
<runtime>97</runtime> 
<budget/> 
<revenue/> 
<homepage/> 
<trailer>http://www.youtube.com/watch?v=b2bc8dHUco4</trailer> 
<categories></categories> 
<keywords></keywords> 
<studios></studios> 
<languages_spoken> 
<language_spoken code="en" name="English" native_name="English"/> 
<language_spoken code="hi" name="Hindi" native_name=""/> 
</languages_spoken> 
<countries></countries> 
<images> 
<image type="poster" url="http://cf2.imgobject.com/t/p/w92/tPuPbPCg0cAwWAAasVAyy4366BA.jpg" size="thumb" width="92" height="136" id="4ee0cac57b9aa14e0f00272e"/> 
<image type="poster" url="http://cf2.imgobject.com/t/p/w154/tPuPbPCg0cAwWAAasVAyy4366BA.jpg" size="w154" width="154" height="228" id="4ee0cac57b9aa14e0f00272e"/> 
<image type="poster" url="http://cf2.imgobject.com/t/p/w185/tPuPbPCg0cAwWAAasVAyy4366BA.jpg" size="cover" width="185" height="274" id="4ee0cac57b9aa14e0f00272e"/> 
<image type="poster" url="http://cf2.imgobject.com/t/p/w342/tPuPbPCg0cAwWAAasVAyy4366BA.jpg" size="w342" width="342" height="507" id="4ee0cac57b9aa14e0f00272e"/> 
<image type="poster" url="http://cf2.imgobject.com/t/p/w500/tPuPbPCg0cAwWAAasVAyy4366BA.jpg" size="mid" width="500" height="741" id="4ee0cac57b9aa14e0f00272e"/> 
<image type="poster" url="http://cf2.imgobject.com/t/p/original/tPuPbPCg0cAwWAAasVAyy4366BA.jpg" size="original" width="1120" height="1660" id="4ee0cac57b9aa14e0f00272e"/> 
</images> 
<cast> 
<person name="Nanda Anand" character="" job="Director" id="589088" thumb="" department="Directing" url="http://www.themoviedb.org/person/589088" order="0" cast_id="1000"/> 
<person name="Lynn Collins" character="" job="Actor" id="21044" thumb="http://cf2.imgobject.com/t/p/w185/berS11tKvXqTFThUWAYrH279cvn.jpg" department="Actors" url="http://www.themoviedb.org/person/21044" order="0" cast_id="1001"/> 
<person name="Kelli Garner" character="" job="Actor" id="17442" thumb="http://cf2.imgobject.com/t/p/w185/tV4nlT3ApNd2iQMN2JGr6uCnoxX.jpg" department="Actors" url="http://www.themoviedb.org/person/17442" order="1" cast_id="1002"/> 
<person name="Justin Theroux" character="" job="Actor" id="15009" thumb="http://cf2.imgobject.com/t/p/w185/hkJ8UaqMacoIiVkqu1AG69cIjMI.jpg" department="Actors" url="http://www.themoviedb.org/person/15009" order="2" cast_id="1003"/> 
</cast> 
<version>1</version> 
<last_modified_at>2011-12-21 11:18:06 UTC</last_modified_at> 
</movie> 

我需要一个XML是这样的：

<movies> 
<movie> 
</movie> 
</movies> 

我敢肯定有办法，我可以做到这一点，但我关于PHP和XML的新内容，所以我需要帮助！ 谢谢！

Answer 1

这不是一个非常优雅的解决方案，但它可以工作：可以读取每个文件，并把他们的内容在一个文件中：

<?php 
$files = array("file1.xml","file2.xml","file3.xml"); 
$output = fopen("result.xml","w"); 
fwrite($output,"<movies>"); 
foreach ($files as $f) 
{ 
    fwrite($output,file_get_contents($f)); 
} 
fwrite($output,"</movies>"); 
?>