Description:
------------
I am trying to generate xml file for sitemap for google tracking of my site url.

I have a php file with the code mentioned(Please refer the code sent) which I am 
running on the command line with no arguments.

The code retrieves value in an array $venueArrayfrom the value recieved from the 
function $venue->getAll()

There is a foreach loop which retrieves the value from the array '$venueArray'.

In the foreach loop I have added a code to fetch url from array '$venueArray' 
element 'id':- 

 $mainurl =$venue->getUrl(array("venueId"=>$venueD['id']));

and puts it in the xml tags with the help of the code

$url->addchild("loc",$mainurl);

and then the contents are appended in the file.

It seems that some of the urls are not added (url for example: 
http://mysite.com/dresden/769112-venue-theater-wechselbad-großer-saal) in the 
following code intended to add urls:-

$url->addchild("loc",$mainurl);

Please provide me with the solution to my problem as soon as possible and also 
please let me know the changes which I should do in order to get urls in my xml 
file.

Some of the urls are not added in $url->addchild("loc",$mainurl);


Test script:
---------------
<?php
/** some of the urls are not added in $url->addchild("loc",$mainurl); **/

$xmltext = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\"></urlset>";

$xmlobj = simplexml_load_string($xmltext);	

/** Code to retrieve venue array **/	  
$venue = new record();	   
		   
$venueArray=$venue->getAll();

/** End of the Code to retrieve venue array **/

foreach($venueArray as $venueD){
		   	   
			  /** Code to retrieve Url from venue array **/ 
			  $mainurl =$venue->getUrl(array("venueId"=>$venueD['id']));			
		       
			   /**
			   
			   Example of the url generated
			   	    
				http://mysite.com/dresden/769112-venue-theater-wechselbad-großer-saal
			
			   **/
			   		 
		    $url= $xmlobj->addChild("url");			
		    $url->addchild("loc",$mainurl);
		    $url->addChild("lastmod",date('Y-m-d'));
		    $url->addChild("changefreq","daily");
		    $url->addChild("priority","0.9");		

              $fp=fopen('test.xml',"a");
		      fwrite($fp,$xmlobj->asXML());
		      fclose($fp); 
}

?>

Expected result:
----------------
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>http://mysite.com/dresden/769112-venue-theater-wechselbad-großer-
saal</loc>
    <lastmod>2012-12-21</lastmod>
    <changefreq>daily</changefreq>
    <priority>0.9</priority>
  </url>
</urlset>

Actual result:
--------------
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
  <loc/>
    <lastmod>2012-12-21</lastmod>
    <changefreq>daily</changefreq>
    <priority>0.9</priority>
  </url>
</urlset>