Extrapolate and download from xml images asp link in WooCommerce

As the URLS within the XML file are protected the following cannot be tested fully but you can try like this, note that the XML as been modified slightly

$xmlstring='<?xml version="1.0" encoding="UTF-8"?>
<TableResult>
    <Product>
        <FDI_0843>https://ws.farmadati.it/WS_DOC/GetDoc.aspx?accesskey=0123BFJ-652e56b0beCad9CBe1c375daCa9A089D35Aab280c&amp;tipodoc=TE009T&amp;nomefile=001536.jpg</FDI_0843>
        <FDI_0840>908872245</FDI_0840>
    </Product>
    <Product>
        <FDI_0843>https://ws.farmadati.it/WS_DOC/GetDoc.aspx?accesskey=0223BFJ-652e56b0beCad9CBe1c375daCa9A089D35Aab280c&amp;tipodoc=TE009X&amp;nomefile=005075.jpg</FDI_0843>
        <FDI_0840>908057906</FDI_0840>
    </Product>
</TableResult>';
            
/**************************************************
    Determine where you will save files to
    and amend this path as necessary. Currently
    this creates a new directory under the current
    working directory if it does not exist.
*/
$save_directory=__DIR__ . '\save_images_here';
if( !file_exists( $save_directory ) ) {
    mkdir( $save_directory, 0777, true );
}

/*******************************************
    Create the DOMDocument instance & load
    the XML string ( or file )
    
    Query the DOM to find all relevant nodes
    and process that nodelist to extract 
    name of file.
    
    Note in the xml string the ampersand
    is encoded as HTML entity!
*/
libxml_use_internal_errors( true );
$dom = new DOMDocument;
$dom->validateOnParse=false;
$dom->strictErrorChecking=false;
$dom->recover=true;
$dom->loadXML( $xmlstring );
libxml_clear_errors();
/*
    Find all nodes - FDI_0843
*/
$col=$dom->getElementsByTagName('FDI_0843');
if( $col && $col->length > 0 ){
    foreach( $col as $node ){
        # decode the value held by the node
        $url=urldecode( $node->nodeValue );
        
        # extract the querystring
        $querystring=parse_url( $url, PHP_URL_QUERY );
        
        # parse the querystring
        parse_str( $querystring, $output );
        $nomefile=$output['nomefile'];
        
        # create new filepath, download and save target file
        $filepath=sprintf('%s\%s',$save_directory,$nomefile);
        $filedata=file_get_contents( $url );
        file_put_contents( $filepath, $filedata );# error here ~ had arguments back to front
        
        #... next
    }
}