I have made a view which outputs an xml file using views (obviously) and views_data_export

I need to convert each node in the xml to an html file with the node title as the file title, then create a folder, dump all the files there, tar them up, then force a download.

I can make this happen on my installation of mamp, using the following code.

<?php
/**
* @file
* actorconverter.php
* Converts xml feed of actor data to html files
*/
//errors on
error_reporting(E_ALL);
ini_set('display_errors', '1');
//load xml file
$xml = simplexml_load_file('actorexport.xml');
//print the bits we want
foreach ($xml->node as $node)
    {   
$filestring = "<html>\r\n";
       
$filestring .="<body>\r\n";
       
$filestring .= $node->title;
       
$filestring .= $node->description;
       
$filestring .= $node->reports;
       
$filestring .= $node->contact;
       
$filestring .="</body>";
       
$filestring .="</html>";
//create today's output directory if it doesnt exist
if (!is_dir('actors'.date('mdY')))
    {
       
mkdir('actors'. date('mdY'));
    }
$outputdir=('actors'. date('mdY'));
//write string to file
$htmlfile = fopen(str_replace(" ", "\x20", strip_tags($outputdir .'/' .$node->title.'.html')), "w+");
fwrite($htmlfile, $filestring);
fclose($htmlfile);
    };
//archive files
   
shell_exec('tar -cvzf ' .$outputdir.'.tar '.$outputdir.'/*.html');
//force download
   
$download = ($outputdir.'.tar');
if (
file_exists($download))
    {
   
header("Content-disposition: attachment; filename=" .$download);
   
header("Content-type: application/tar");
   
readfile($download);
    exit;
    };
?>

However I can't make it work on the remote site, I have tried for days to figure it out. ANY suggestions welcomed greatly!