diff --git a/public/db-connect.php b/public/db-connect.php
index 9d85eb1..fc4698f 100644
--- a/public/db-connect.php
+++ b/public/db-connect.php
@@ -1,8 +1,19 @@
-<?php

-$con = mysqli_connect('localhost', 'u00wiumd4xnrd', 'ukowysga7w5x', 'dbcov4clvrmrzn');

-// Check connection

-if (mysqli_connect_errno())

-{

- 	echo "Failed to connect to MySQL: " . mysqli_connect_error();

-}

-?>
\ No newline at end of file
+<?php
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+if (!isset($_ENV['DB_HOST'])) {
+	Dotenv\Dotenv::createImmutable(__DIR__ . '/../')->safeLoad();
+}
+
+$con = mysqli_connect(
+	$_ENV['DB_HOST'] ?? 'localhost',
+	$_ENV['DB_USERNAME'] ?? '',
+	$_ENV['DB_PASSWORD'] ?? '',
+	$_ENV['DB_DATABASE'] ?? ''
+);
+
+// Check connection
+if (mysqli_connect_errno()) {
+	echo "Failed to connect to MySQL: " . mysqli_connect_error();
+}
diff --git a/public/db.php b/public/db.php
index e4a242c..9ec88f9 100644
--- a/public/db.php
+++ b/public/db.php
@@ -1,7 +1,19 @@
-<?php

-//dependent dropdown in php Database Connection

-$conn = new mysqli('localhost', 'u00wiumd4xnrd', 'ukowysga7w5x', 'dbcov4clvrmrzn');

-if ($conn->connect_error) {

-die("Connection failed: " . $conn->connect_error);

-}

-?>
\ No newline at end of file
+<?php
+//dependent dropdown in php Database Connection
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+if (!isset($_ENV['DB_HOST'])) {
+    Dotenv\Dotenv::createImmutable(__DIR__ . '/../')->safeLoad();
+}
+
+$conn = new mysqli(
+    $_ENV['DB_HOST'] ?? 'localhost',
+    $_ENV['DB_USERNAME'] ?? '',
+    $_ENV['DB_PASSWORD'] ?? '',
+    $_ENV['DB_DATABASE'] ?? ''
+);
+
+if ($conn->connect_error) {
+    die("Connection failed: " . $conn->connect_error);
+}
diff --git a/public/ddown/dropdown.php b/public/ddown/dropdown.php
index 17213be..743887d 100644
--- a/public/ddown/dropdown.php
+++ b/public/ddown/dropdown.php
@@ -1,19 +1,27 @@
-<?php 
+<?php
+
+require_once __DIR__ . '/../../vendor/autoload.php';
+
+if (!isset($_ENV['DB_HOST'])) {
+    Dotenv\Dotenv::createImmutable(__DIR__ . '/../../')->safeLoad();
+}
 
 Class Dropdown
 {
-	
-	private $host = 'localhost';
-	private $username = 'u00wiumd4xnrd';
-	private $password = 'ukowysga7w5x';
-	private $dbname = 'dbcov4clvrmrzn';
+	private $host;
+	private $username;
+	private $password;
+	private $dbname;
 	private $connection;
 
 	//establish connection
 	public function __construct()
-	
 	{
-		
+		$this->host     = $_ENV['DB_HOST'] ?? 'localhost';
+		$this->username = $_ENV['DB_USERNAME'] ?? '';
+		$this->password = $_ENV['DB_PASSWORD'] ?? '';
+		$this->dbname   = $_ENV['DB_DATABASE'] ?? '';
+
 		try 
 		{
 			$this->connection = new mysqli($this->host, $this->username, $this->password, $this->dbname);
@@ -22,75 +30,4 @@ Class Dropdown
 		{
 			echo "Connection error " . $e->getMessage();
 		}
-	}
-
-	
-	//fetch all country records from database
-	public function fetchCountry()
-	{
-		$data = null;
-
-		$query = "SELECT * FROM article_type ORDER BY article_type.name_articletype";
-
-		if ($sql = $this->connection->query($query)) 
-		{
-			while ($rows = mysqli_fetch_assoc($sql)) 
-			{
-				$data[] = $rows;
-			}
-		}
-
-		return $data;
-	}
-	
-	//fetch model records from database depend upon country id
-	public function fetchModel($idarticletype)
-	{
-		$data = null;
-
-		$query = "SELECT * FROM modelarticle WHERE idarticletype='".$idarticletype."' ";
-
-		if ($sql = $this->connection->query($query)) 
-		{
-			while ($rows = mysqli_fetch_assoc($sql)) 
-			{
-				$data[] = $rows;
-			}
-		}
-
-		return $data;
-	}
-	
-//fetch Charact records from database depend on article type
-public function fetchCharact($idarticletype)
-{
-    $data = null;
-
-    $idarticletype = (int)$idarticletype;
-
-    $query = "
-        SELECT DISTINCT 
-            ac.*
-        FROM article_characteristic ac
-        INNER JOIN standards s
-            ON s.idarticlecharacteristic = ac.idarticlecharacteristic
-           AND s.idarticletype = ac.idarticletype
-        WHERE ac.idarticletype = $idarticletype
-          AND s.active = 'Y'
-        ORDER BY ac.name_articlecharacteristic
-    ";
-
-    if ($sql = $this->connection->query($query)) 
-    {
-        while ($rows = mysqli_fetch_assoc($sql)) 
-        {
-            $data[] = $rows;
-        }
-    }
-
-    return $data;
-}
-
-}
-
- ?>
\ No newline at end of file
+	}
\ No newline at end of file
diff --git a/scripttool/zipfolder.php b/scripttool/zipfolder.php
index 3f42fc9..d17370f 100644
--- a/scripttool/zipfolder.php
+++ b/scripttool/zipfolder.php
@@ -1,121 +1,40 @@
-

-<?php

-    // dump db and backup folder yogasoul... placed into claudiosironi.com ... folder of backup = tempzip in the main ideezeur folder

-    

-    

-	//dump database 

-    /*

-ini_set('memory_limit', '-1');

-// Database configuration

-$host = "localhost";

-$username = "u00wiumd4xnrd";

-$password = "ukowysga7w5x";

-$database_name = "dbcov4clvrmrzn";

-

-// Get connection object and set the charset

-$conn = mysqli_connect($host, $username, $password, $database_name);

-$conn->set_charset("utf8");

-

-

-// Get All Table Names From the Database

-$tables = array();

-$sql = "SHOW TABLES";

-$result = mysqli_query($conn, $sql);

-

-while ($row = mysqli_fetch_row($result)) {

-    $tables[] = $row[0];

-}

-?>

-<?php

-$sqlScript = "";

-foreach ($tables as $table) {

-    

-    // Prepare SQLscript for creating table structure

-    $query = "SHOW CREATE TABLE $table";

-    $result = mysqli_query($conn, $query);

-    $row = mysqli_fetch_row($result);

-    

-    $sqlScript .= "\n\n" . $row[1] . ";\n\n";

-    

-    

-    $query = "SELECT * FROM $table";

-    $result = mysqli_query($conn, $query);

-    

-    $columnCount = mysqli_num_fields($result);

-    

-    // Prepare SQLscript for dumping data for each table

-    for ($i = 0; $i < $columnCount; $i ++) {

-        while ($row = mysqli_fetch_row($result)) {

-            $sqlScript .= "INSERT INTO $table VALUES(";

-            for ($j = 0; $j < $columnCount; $j ++) {

-                $row[$j] = $row[$j];

-                

-                if (isset($row[$j])) {

-                    $sqlScript .= '"' . $row[$j] . '"';

-                } else {

-                    $sqlScript .= '""';

-                }

-                if ($j < ($columnCount - 1)) {

-                    $sqlScript .= ',';

-                }

-            }

-            $sqlScript .= ");\n";

-        }

-    }

-    

-    $sqlScript .= "\n"; 

-}

-?>

-<?php

-	if(!empty($sqlScript))

-{

-    // Save the SQL script to a backup file

-    $backup_file_name = '../tempbck/'.$database_name . '_backup_.sql';

-    $fileHandler = fopen($backup_file_name, 'w+');

-    $number_of_lines = fwrite($fileHandler, $sqlScript);

-    fclose($fileHandler); 

-} */

-?>

-

-<? 

-	// archive into ZIP the folder

-ignore_user_abort(true);

-set_time_limit(3600);

-

-

-$main_path = '../modulo_certificazione';

-$zip_file = '../tempbck//cimac.tar';

-

-if (file_exists($main_path) && is_dir($main_path))  

-{

-    $zip = new ZipArchive();

-

-    if (file_exists($zip_file)) {

-        unlink($zip_file); // truncate ZIP

-    }

-    if ($zip->open($zip_file, ZIPARCHIVE::CREATE)!==TRUE) {

-        die("cannot open <$zip_file>\n");

-    }

-

-    $files = 0;

-    $paths = array($main_path);

-    while (list(, $path) = each($paths))

-    {

-        foreach (glob($path.'/*') as $p)

-        {

-            if (is_dir($p)) {

-                $paths[] = $p;

-            } else {

-                $zip->addFile($p);

-                $files++;

-

-                echo $p."<br>\n";

-            }

-        }

-    }

-

-    echo 'Total files: '.$files;

-

-    $zip->close();

-} 

-?>

+<?php
+// Archivia in ZIP la cartella modulo_certificazione (backup)
+// NB: il vecchio blocco di dump database è stato rimosso perché conteneva
+//     credenziali in chiaro ed era disattivato. Se serve un dump DB,
+//     usare mysqldump o un comando artisan dedicato.
+
+ignore_user_abort(true);
+set_time_limit(3600);
+
+$main_path = '../modulo_certificazione';
+$zip_file  = '../tempbck//cimac.tar';
+
+if (file_exists($main_path) && is_dir($main_path)) {
+    $zip = new ZipArchive();
+
+    if (file_exists($zip_file)) {
+        unlink($zip_file); // truncate ZIP
+    }
+    if ($zip->open($zip_file, ZIPARCHIVE::CREATE) !== TRUE) {
+        die("cannot open <$zip_file>\n");
+    }
+
+    $files = 0;
+    $paths = array($main_path);
+
+    while (list(, $path) = each($paths)) {
+        foreach (glob($path . '/*') as $p) {
+            if (is_dir($p)) {
+                $paths[] = $p;
+            } else {
+                $zip->addFile($p);
+                $files++;
+                echo $p . "<br>\n";
+            }
+        }
+    }
+
+    echo 'Total files: ' . $files;
+    $zip->close();
+}