Split di xml in files più piccoli

[bettinz]

Dato che non posso modificare il mio messaggio, posto il codice che ho prodotto finora:

<?php 

$xml= simplexml_load_file('articoli.xml');
$i=0;
foreach ($xml->UpdatedProducts->Product as $product) {
    $id[$i]= $product->InternalID;
    $code[$i] = $product->Code;
    $descr[$i]= $product->Description;
    $descrhtml[$i]= $product->DescriptionHtml;
    $cat[$i]= $product->Category;
    $subcat[$i]= $product->Subcategory;
    $vat[$i]= $product->Vat;
    $um[$i]= $product->Um;
    $uno[$i]= $product->NetPrice1;
    $unoa[$i]= $product->GrossPrice1;
    $due[$i]= $product->NetPrice2;
    $duea[$i]= $product->GrossPrice2;
    $cinque[$i]= $product->NetPrice5;
    $cinquea[$i]= $product->GrossPrice5;
    $sette[$i]= $product->NetPrice7;
    $settea[$i]= $product->GrossPrice7;
    $otto[$i]= $product->NetPrice8;
    $ottoa[$i]= $product->GrossPrice8;
    $producer[$i]= $product->ProducerName;
    $suppcode[$i]= $product->SupplierCode;
    $suppname[$i]= $product->SupplierName;
    $suppprodcode[$i]= $product->SupplierProductCode;
    $suppnetprice[$i]= $product->SupplierNetPrice;
    $suppgrossprice[$i]= $product->SupplierGrossPrice;
    $sizeum[$i]= $product->SizeUm;
    $weightum[$i]= $product->WeightUm;
    $netweight[$i]= $product->NetWeight;
    $grossweight[$i]= $product->GrossWeight;
    $manage[$i]= $product->ManageWarehouse;
    $qty[$i]= $product->AvailableQty;
    $notes[$i]= $product->Notes;
    $image[$i]= $product->ImageFileName;
    $i++;
    
    
}
for ($x=0; $x<$i; $x++){
    
$myFile = "split[$x].xml";
$fh = fopen($myFile, 'w') or die("can't open file");
$stringData = '<?xml version="1.0" encoding="UTF-8"?>';
fwrite($fh, $stringData);
$stringData = "\n";
fwrite($fh, $stringData);
$stringData = '<EasyfattProducts AppVersion="2" Creator="Danea Easyfatt Enterprise  2011.16c" CreatorUrl="http://www.danea.it/software/easyfatt" Mode="incremental" ImageFolder="\">';
fwrite($fh, $stringData);
$stringData = "\n";
fwrite($fh, $stringData);
$stringData = '  <UpdatedProducts>';
fwrite($fh, $stringData);
$stringData = "\n";
fwrite($fh, $stringData);
$stringData = '<Product>';
fwrite($fh, $stringData);
$stringData = "\n";
fwrite($fh, $stringData);
$stringData = "<InternalID>$id[$x]</InternalID>";
fwrite($fh, $stringData);
$stringData = "\n";
fwrite($fh, $stringData);
$stringData = '</Product>';
fwrite($fh, $stringData);
$stringData = "\n";
fwrite($fh, $stringData);
$stringData = '  </UpdatedProducts>';
fwrite($fh, $stringData);
$stringData = '<DeletedProducts></DeletedProducts>';
fwrite($fh, $stringData);
$stringData = '</EasyfattProducts>';
fwrite($fh, $stringData);
fclose($fh);

}


?>

i suggerimenti sono sempre ben accetti