diff --git a/htdocs/admin/tools/dolibarr_export.php b/htdocs/admin/tools/dolibarr_export.php
index a481969c7a4..1742fd1ff64 100644
--- a/htdocs/admin/tools/dolibarr_export.php
+++ b/htdocs/admin/tools/dolibarr_export.php
@@ -83,7 +83,6 @@ if ($_GET["msg"])
 	print "\n";
 }
 
-
 ?>
 
 <!-- Dump of a server -->
@@ -100,7 +99,7 @@ if ($_GET["msg"])
 		<div id="div_container_exportoptions">
 		<fieldset id="exportoptions"><legend><?php echo $langs->trans("ExportMethod"); ?></legend>
 		<?php
-		if ($db->label == 'MySQL')
+		if ($db::$label == 'MySQL')
 		{
 			?>
 			<div class="formelementrow"><input type="radio" name="what" value="mysql" id="radio_dump_mysql" />
@@ -113,7 +112,7 @@ if ($_GET["msg"])
 			<?php
 			}
 		}
-		else if ($db->label == 'PostgreSQL')
+		else if ($db::$label == 'PostgreSQL')
 		{
 			?>
 			<div class="formelementrow"><input type="radio" name="what"	value="postgresql" id="radio_dump_postgresql" />
@@ -123,7 +122,7 @@ if ($_GET["msg"])
 		}
 		else
 		{
-			print 'No method available with database '.$db->label;
+			print 'No method available with database '.$db::$label;
 		}
 		?>
 		</fieldset>
@@ -135,7 +134,7 @@ if ($_GET["msg"])
 
 		<div id="div_container_sub_exportoptions">
 		<?php
-		if ($db->label == 'MySQL')
+		if ($db::$label == 'MySQL')
 		{
 			?> <!--  Fieldset mysqldump -->
 			<fieldset id="mysql_options"><legend><?php echo $langs->trans("MySqlExportParameters"); ?></legend>
@@ -218,7 +217,7 @@ if ($_GET["msg"])
 		<?php
 		}
 
-		if ($db->label == 'PostgreSQL')
+		if ($db::$label == 'PostgreSQL')
 		{
 			?> <!--  Fieldset pg_dump -->
 			<fieldset id="postgresql_options"><legend><?php echo $langs->trans("PostgreSqlExportParameters"); ?></legend>
@@ -282,8 +281,8 @@ if ($_GET["msg"])
 	id="filename_template"
 	value="<?php
 $prefix='dump';
-if ($db->label == 'MySQL') $prefix='mysqldump';
-if ($db->label == 'PostgreSQL') $prefix='pg_dump';
+if ($db::$label == 'MySQL')      $prefix='mysqldump';
+if ($db::$label == 'PostgreSQL') $prefix='pg_dump';
 $file=$prefix.'_'.$dolibarr_main_db_name.'_'.dol_sanitizeFileName(DOL_VERSION).'_'.strftime("%Y%m%d%H%M").'.sql';
 echo $file;
 ?>" /> <br>
@@ -297,7 +296,7 @@ $compression=array(
 //	'zip'  => array('function' => 'zip_open', 'id' => 'radio_compression_zip',  'label' => $langs->trans("Zip")),		Not open source
 	'gz'   => array('function' => 'gzopen',   'id' => 'radio_compression_gzip', 'label' => $langs->trans("Gzip")),
 );
-if ($db->label == 'MySQL')
+if ($db::$label == 'MySQL')
 {
 	$compression['bz']=array('function' => 'bzopen',  'id' => 'radio_compression_bzip', 'label' => $langs->trans("Bzip2"));
 }
@@ -331,10 +330,10 @@ print "\n";
 ?></fieldset>
 
 
-<center><input type="submit" class="button"
+<div align="center"><input type="submit" class="button"
 	value="<?php echo $langs->trans("GenerateBackup") ?>" id="buttonGo" /><br>
 <br>
-</center>
+</div>
 
 
 </form>
diff --git a/htdocs/admin/tools/dolibarr_import.php b/htdocs/admin/tools/dolibarr_import.php
index c2478149af7..28c39d2c8b2 100644
--- a/htdocs/admin/tools/dolibarr_import.php
+++ b/htdocs/admin/tools/dolibarr_import.php
@@ -69,7 +69,7 @@ print $langs->trans("RestoreDesc3",DOL_DATA_ROOT).'<br><br>';
 <fieldset id="exportoptions">
 	<legend><?php echo $langs->trans("ImportMethod"); ?></legend>
     <?php
-    if ($db->label == 'MySQL')
+    if ($db::$label == 'MySQL')
     {
     ?>
     <div class="formelementrow">
@@ -78,7 +78,7 @@ print $langs->trans("RestoreDesc3",DOL_DATA_ROOT).'<br><br>';
     </div>
     <?php
     }
-    else if ($db->label == 'PostgreSQL')
+    else if ($db::$label == 'PostgreSQL')
     {
     ?>
     <div class="formelementrow">
@@ -89,7 +89,7 @@ print $langs->trans("RestoreDesc3",DOL_DATA_ROOT).'<br><br>';
     }
     else
     {
-        print 'No method available with database '.$db->label;
+        print 'No method available with database '.$db::$label;
     }
     ?>
 </fieldset>
@@ -101,7 +101,7 @@ print $langs->trans("RestoreDesc3",DOL_DATA_ROOT).'<br><br>';
 
 <div id="div_container_sub_exportoptions">
 <?php
-if ($db->label == 'MySQL')
+if ($db::$label == 'MySQL')
 {
 ?>
 	<fieldset id="mysql_options">
@@ -135,7 +135,7 @@ if ($db->label == 'MySQL')
     </fieldset>
 <?php
 }
-else if ($db->label == 'PostgreSQL')
+else if ($db::$label == 'PostgreSQL')
 {
 ?>
     <fieldset id="postgresql_options">
diff --git a/htdocs/admin/tools/export.php b/htdocs/admin/tools/export.php
index be59a528f29..d32bae6ed53 100644
--- a/htdocs/admin/tools/export.php
+++ b/htdocs/admin/tools/export.php
@@ -208,7 +208,7 @@ if ($what == 'mysql')
             @dol_delete_file($outputerror,1);
             @rename($outputfile,$outputerror);
             // Si safe_mode on et command hors du parametre exec, on a un fichier out vide donc errormsg vide
-            if (! $errormsg) 
+            if (! $errormsg)
             {
             	$langs->load("errors");
             	$errormsg=$langs->trans("ErrorFailedToRunExternalCommand");
@@ -395,7 +395,7 @@ function backup_tables($outputfile, $tables='*')
 
     // Print headers and global mysql config vars
     $sqlhead = '';
-    $sqlhead .= "-- ".$db->label." dump via php
+    $sqlhead .= "-- ".$db::$label." dump via php
 --
 -- Host: ".$db->db->host_info."    Database: ".$db->database_name."
 -- ------------------------------------------------------
diff --git a/htdocs/core/db/mssql.class.php b/htdocs/core/db/mssql.class.php
index 9232a94442d..7287bd62944 100644
--- a/htdocs/core/db/mssql.class.php
+++ b/htdocs/core/db/mssql.class.php
@@ -34,7 +34,7 @@ class DoliDBMssql
 	//! Database handler
 	var $db;
 	//! Database type
-	static $type='mssql';
+	public $type='mssql';
 	//! Database label
 	static $label='MSSQL';
 	//! Charset used to force charset when creating database
diff --git a/htdocs/core/db/mysql.class.php b/htdocs/core/db/mysql.class.php
index ed4bb3d9e06..696440147c5 100644
--- a/htdocs/core/db/mysql.class.php
+++ b/htdocs/core/db/mysql.class.php
@@ -34,7 +34,7 @@ class DoliDBMysql
 	//! Database handler
 	var $db;
 	//! Database type
-	static $type='mysql';
+	public $type='mysql';
 	//! Database label
 	static $label='MySQL';
 	//! Charset used to force charset when creating database
diff --git a/htdocs/core/db/mysqli.class.php b/htdocs/core/db/mysqli.class.php
index 8ffeebf73ac..e6b324e8739 100644
--- a/htdocs/core/db/mysqli.class.php
+++ b/htdocs/core/db/mysqli.class.php
@@ -34,7 +34,7 @@ class DoliDBMysqli
     //! Database handler
     var $db;
     //! Database type
-    static $type='mysqli';
+    public $type='mysqli';
     //! Database label
     static $label='MySQL';
     //! Charset used to force charset when creating database
diff --git a/htdocs/core/db/pgsql.class.php b/htdocs/core/db/pgsql.class.php
index ba1cb4c36d0..aefe7720d08 100644
--- a/htdocs/core/db/pgsql.class.php
+++ b/htdocs/core/db/pgsql.class.php
@@ -32,8 +32,11 @@
  */
 class DoliDBPgsql
 {
-	var $db;                      // Database handler
-	static $type='pgsql';            // Name of manager
+    //! Database handler
+    var $db;
+    //! Database type
+	public $type='pgsql';            // Name of manager
+    //! Database label
 	static $label='PostgreSQL';      // Label of manager
 	//! Charset
 	static $forcecharset='latin1';
diff --git a/htdocs/core/db/sqlite.class.php b/htdocs/core/db/sqlite.class.php
index 49191d3d708..fa71cb2874d 100644
--- a/htdocs/core/db/sqlite.class.php
+++ b/htdocs/core/db/sqlite.class.php
@@ -34,7 +34,7 @@ class DoliDBSqlite
     //! Database handler
     var $db;
     //! Database type
-    static $type='sqlite';
+    public $type='sqlite';
     //! Database label
     static $label='Sqlite';
     //! Charset used to force charset when creating database