diff --git a/htdocs/admin/tools/purge.php b/htdocs/admin/tools/purge.php
index 9249186f574..1bc3fea3909 100644
--- a/htdocs/admin/tools/purge.php
+++ b/htdocs/admin/tools/purge.php
@@ -48,60 +48,10 @@ if (! empty($conf->syslog->enabled))
  */
 if ($action=='purge' && ! preg_match('/^confirm/i',$choice) && ($choice != 'allfiles' || $confirm == 'yes') )
 {
-	$filesarray=array();
+	require_once DOL_DOCUMENT_ROOT.'/core/class/utils.class.php';
+	$utils = new Utils($db);
+	$count = $utils->purgeFiles($choice);
 	
-	if ($choice=='tempfiles')
-	{
-		// Delete temporary files
-		if ($dolibarr_main_data_root)
-		{
-			$filesarray=dol_dir_list($dolibarr_main_data_root,"directories",1,'^temp$');
-		}
-	}
-
-	if ($choice=='allfiles')
-	{
-		// Delete all files
-		if ($dolibarr_main_data_root)
-		{
-			$filesarray=dol_dir_list($dolibarr_main_data_root,"all",0,'','install\.lock$');
-		}
-	}
-
-	if ($choice=='logfile')
-	{
-		$filesarray[]=array('fullname'=>$filelog,'type'=>'file');
-	}
-
-	$count=0;
-	if (count($filesarray))
-	{
-		foreach($filesarray as $key => $value)
-		{
-			//print "x ".$filesarray[$key]['fullname']."<br>\n";
-			if ($filesarray[$key]['type'] == 'dir')
-			{
-				$count+=dol_delete_dir_recursive($filesarray[$key]['fullname']);
-			}
-			elseif ($filesarray[$key]['type'] == 'file')
-			{
-				// If (file that is not logfile) or (if logfile with option logfile)
-				if ($filesarray[$key]['fullname'] != $filelog || $choice=='logfile')
-				{
-					$count+=(dol_delete_file($filesarray[$key]['fullname'])?1:0);
-				}
-			}
-		}
-
-		// Update cachenbofdoc
-		if (! empty($conf->ecm->enabled) && $choice=='allfiles')
-		{
-			require_once DOL_DOCUMENT_ROOT.'/ecm/class/ecmdirectory.class.php';
-			$ecmdirstatic = new EcmDirectory($db);
-			$result = $ecmdirstatic->refreshcachenboffile(1);
-		}
-	}
-
 	if ($count) $mesg=$langs->trans("PurgeNDirectoriesDeleted", $count);
 	else $mesg=$langs->trans("PurgeNothingToDelete");
 	setEventMessages($mesg, null, 'mesgs');
@@ -159,7 +109,7 @@ if (preg_match('/^confirm/i',$choice))
 {
 	print '<br>';
 	$formquestion=array();
-	print $form->formconfirm($_SERVER["PHP_SELF"].'?choice=allfiles', $langs->trans('Purge'), $langs->trans('ConfirmPurge').' '.img_warning(), 'purge', $formquestion, 'no', 2);
+	print $form->formconfirm($_SERVER["PHP_SELF"].'?choice=allfiles', $langs->trans('Purge'), $langs->trans('ConfirmPurge').img_warning().' ', 'purge', $formquestion, 'no', 2);
 }
 
 
diff --git a/htdocs/core/class/utils.class.php b/htdocs/core/class/utils.class.php
new file mode 100644
index 00000000000..23827a31b94
--- /dev/null
+++ b/htdocs/core/class/utils.class.php
@@ -0,0 +1,117 @@
+<?php
+/* Copyright (C) 2016 Destailleur Laurent <eldy@users.sourceforge.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ *   	\file       htdocs/core/class/utils.class.php
+ *      \ingroup    core
+ *		\brief      File for Utils class
+ */
+
+
+/**
+ *		Class to manage utility methods
+ */
+class Utils
+{
+	var $db;
+	
+	/**
+	 *	Constructor
+	 *
+	 *  @param	DoliDB	$db		Database handler
+	 */
+	function __construct($db)
+	{
+		$this->db = $db;
+	}
+
+
+	/**
+	 *  Purge files into directory of data files.
+	 *
+	 *  @param	string		$choice		Choice of purge mode ('tempfiles', 'allfiles', 'logfiles')
+	 *  @return	int						Nb of files deleted 
+	 */
+	function purgeFiles($choice)
+	{
+		global $conf, $dolibarr_main_data_root;
+		
+		$filesarray=array();
+		
+		if ($choice=='tempfiles')
+		{
+			// Delete temporary files
+			if ($dolibarr_main_data_root)
+			{
+				$filesarray=dol_dir_list($dolibarr_main_data_root,"directories",1,'^temp$');
+			}
+		}
+	
+		if ($choice=='allfiles')
+		{
+			// Delete all files
+			if ($dolibarr_main_data_root)
+			{
+				$filesarray=dol_dir_list($dolibarr_main_data_root,"all",0,'','install\.lock$');
+			}
+		}
+	
+		if ($choice=='logfile')
+		{
+			// Define filelog to discard it from purge
+			$filelog='';
+			if (! empty($conf->syslog->enabled))
+			{
+				$filelog=SYSLOG_FILE;
+				$filelog=preg_replace('/DOL_DATA_ROOT/i',DOL_DATA_ROOT,$filelog);
+			}
+
+			$filesarray[]=array('fullname'=>$filelog,'type'=>'file');
+		}
+	
+		$count=0;
+		if (count($filesarray))
+		{
+			foreach($filesarray as $key => $value)
+			{
+				//print "x ".$filesarray[$key]['fullname']."<br>\n";
+				if ($filesarray[$key]['type'] == 'dir')
+				{
+					$count+=dol_delete_dir_recursive($filesarray[$key]['fullname']);
+				}
+				elseif ($filesarray[$key]['type'] == 'file')
+				{
+					// If (file that is not logfile) or (if logfile with option logfile)
+					if ($filesarray[$key]['fullname'] != $filelog || $choice=='logfile')
+					{
+						$count+=(dol_delete_file($filesarray[$key]['fullname'])?1:0);
+					}
+				}
+			}
+	
+			// Update cachenbofdoc
+			if (! empty($conf->ecm->enabled) && $choice=='allfiles')
+			{
+				require_once DOL_DOCUMENT_ROOT.'/ecm/class/ecmdirectory.class.php';
+				$ecmdirstatic = new EcmDirectory($this->db);
+				$result = $ecmdirstatic->refreshcachenboffile(1);
+			}
+		}
+			
+		return $count;
+	}
+}