diff --git a/htdocs/admin/boxes.php b/htdocs/admin/boxes.php
index 8d6cdd939f3..ecd1b6cefc9 100644
--- a/htdocs/admin/boxes.php
+++ b/htdocs/admin/boxes.php
@@ -28,10 +28,11 @@ include_once(DOL_DOCUMENT_ROOT."/core/lib/admin.lib.php");
 
 $langs->load("admin");
 
-$id=GETPOST('rowid','int');
-
 if (!$user->admin) accessforbidden();
 
+$rowid = GETPOST('rowid','int');
+$action = GETPOST('action');
+
 // Definition des positions possibles pour les boites
 $pos_array = array(0);                             // Positions possibles pour une boite (0,1,2,...)
 $pos_name = array(0=>$langs->trans("Home"));       // Nom des positions 0=Homepage, 1=...
@@ -41,13 +42,13 @@ $boxes = array();
 /*
  * Actions
  */
+if ($action == 'addconst')
 
-if ((isset($_POST["action"]) && $_POST["action"] == 'addconst'))
 {
     dolibarr_set_const($db, "MAIN_BOXES_MAXLINES",$_POST["MAIN_BOXES_MAXLINES"],'',0,'',$conf->entity);
 }
 
-if ($_POST["action"] == 'add')
+if ($action == 'add')
 {
 	$sql = "SELECT rowid";
 	$sql.= " FROM ".MAIN_DB_PREFIX."boxes";
@@ -98,12 +99,12 @@ if ($_POST["action"] == 'add')
 	}
 }
 
-if ($_GET["action"] == 'delete')
+if ($action == 'delete')
 {
 	$db->begin();
 
 	$sql = "DELETE FROM ".MAIN_DB_PREFIX."boxes";
-	$sql.= " WHERE rowid=".$id;
+	$sql.= " WHERE rowid=".$rowid;
 	$resql = $db->query($sql);
 
 	// Remove all personalized setup when a box is activated or disabled
@@ -114,7 +115,7 @@ if ($_GET["action"] == 'delete')
 	$db->commit();
 }
 
-if ($_GET["action"] == 'switch')
+if ($action == 'switch')
 {
 	// On permute les valeur du champ box_order des 2 lignes de la table boxes
 	$db->begin();
diff --git a/htdocs/admin/ihm.php b/htdocs/admin/ihm.php
index 00192a78d8b..790341a9bd3 100644
--- a/htdocs/admin/ihm.php
+++ b/htdocs/admin/ihm.php
@@ -37,23 +37,21 @@ $langs->load("companies");
 $langs->load("products");
 $langs->load("members");
 
-if (!$user->admin) accessforbidden();
+if (! $user->admin) accessforbidden();
+
+$action = GETPOST('action');
 
 
 if (! defined("MAIN_MOTD")) define("MAIN_MOTD","");
 
 // List of supported permanent search area
-$searchform=array(	"MAIN_SEARCHFORM_SOCIETE","MAIN_SEARCHFORM_CONTACT",
-					"MAIN_SEARCHFORM_PRODUITSERVICE","MAIN_SEARCHFORM_ADHERENT");
-$searchformconst=array($conf->global->MAIN_SEARCHFORM_SOCIETE,$conf->global->MAIN_SEARCHFORM_CONTACT,
-					$conf->global->MAIN_SEARCHFORM_PRODUITSERVICE,$conf->global->MAIN_SEARCHFORM_ADHERENT);
-$searchformtitle=array($langs->trans("Companies"),$langs->trans("Contacts"),
-					$langs->trans("ProductsAndServices"),$langs->trans("Members"));
-$searchformmodule=array('Module1Name','Module1Name',
-					'Module50Name','Module310Name');
+$searchform=array("MAIN_SEARCHFORM_SOCIETE","MAIN_SEARCHFORM_CONTACT", "MAIN_SEARCHFORM_PRODUITSERVICE","MAIN_SEARCHFORM_ADHERENT");
+$searchformconst=array($conf->global->MAIN_SEARCHFORM_SOCIETE,$conf->global->MAIN_SEARCHFORM_CONTACT,$conf->global->MAIN_SEARCHFORM_PRODUITSERVICE,$conf->global->MAIN_SEARCHFORM_ADHERENT);
+$searchformtitle=array($langs->trans("Companies"),$langs->trans("Contacts"),$langs->trans("ProductsAndServices"),$langs->trans("Members"));
+$searchformmodule=array('Module1Name','Module1Name','Module50Name','Module310Name');
 
 
-if (isset($_POST["action"]) && $_POST["action"] == 'update')
+if ($action == 'update')
 {
 	dolibarr_set_const($db, "MAIN_LANG_DEFAULT",       $_POST["main_lang_default"],'chaine',0,'',$conf->entity);
 	dolibarr_set_const($db, "MAIN_MULTILANGS",         $_POST["main_multilangs"],'chaine',0,'',$conf->entity);
@@ -101,7 +99,7 @@ print $langs->trans("DisplayDesc")."<br>\n";
 print "<br>\n";
 
 
-if (isset($_GET["action"]) && $_GET["action"] == 'edit')	// Edit
+if ($action == 'edit')	// Edit
 {
     print '<form method="post" action="'.$_SERVER["PHP_SELF"].'">';
     print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 9ef7fa7db3b..d05c59494b6 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -84,7 +84,7 @@ function test_sql_and_script_inject($val, $get)
 	// For XSS Injection done by adding javascript with script
     $sql_inj += preg_match('/<script/i', $val);
 	if ($get) $sql_inj += preg_match('/javascript:/i', $val);
-    // For XSS Injection done by adding javascript with onmousemove, etc... (closing a src or href tag with not cleaned param)
+	// For XSS Injection done by adding javascript with onmousemove, etc... (closing a src or href tag with not cleaned param)
 	if ($get) $sql_inj += preg_match('/"/i', $val);	// We refused " in GET parameters value
 	return $sql_inj;
 }
diff --git a/htdocs/user/index.php b/htdocs/user/index.php
index 3d019c1a71c..eb1b336c994 100644
--- a/htdocs/user/index.php
+++ b/htdocs/user/index.php
@@ -36,7 +36,7 @@ $langs->load("companies");
 $socid=0;
 if ($user->societe_id > 0) $socid = $user->societe_id;
 
-$sall=GETPOST("sall");
+$sall=GETPOST('sall','alpha');
 
 $sortfield = GETPOST("sortfield",'alpha');
 $sortorder = GETPOST("sortorder",'alpha');
diff --git a/htdocs/user/info.php b/htdocs/user/info.php
index d3c72db39a5..b003c6f59da 100644
--- a/htdocs/user/info.php
+++ b/htdocs/user/info.php
@@ -37,11 +37,11 @@ $fuser->fetch($id);
 $socid=0;
 if ($user->societe_id > 0) $socid = $user->societe_id;
 $feature2 = (($socid && $user->rights->user->self->creer)?'':'user');
-if ($user->id == $_GET["id"])	// A user can always read its own card
+if ($user->id == $id)	// A user can always read its own card
 {
 	$feature2='';
 }
-$result = restrictedArea($user, 'user', $_GET["id"], '', $feature2);
+$result = restrictedArea($user, 'user', $id, '', $feature2);
 
 // If user is not user read and no permission to read other users, we stop
 if (($fuser->id != $user->id) && (! $user->rights->user->user->lire))
@@ -55,7 +55,7 @@ if (($fuser->id != $user->id) && (! $user->rights->user->user->lire))
 
 llxHeader();
 
-$fuser->info($_GET["id"]);
+$fuser->info($id);
 
 $head = user_prepare_head($fuser);
 
diff --git a/htdocs/user/note.php b/htdocs/user/note.php
index e395a47dc46..e86f007abb0 100644
--- a/htdocs/user/note.php
+++ b/htdocs/user/note.php
@@ -26,8 +26,8 @@ require("../main.inc.php");
 require_once(DOL_DOCUMENT_ROOT.'/core/lib/usergroups.lib.php');
 require_once(DOL_DOCUMENT_ROOT.'/user/class/user.class.php');
 
-$action=GETPOST('action');
-$id=GETPOST('id','int');
+$id = GETPOST('id','int');
+$action = GETPOST('action');
 
 $langs->load("companies");
 $langs->load("members");
@@ -57,7 +57,7 @@ $result = restrictedArea($user, 'user', $_GET["id"], '', $feature2);
 /*                     Actions                                                */
 /******************************************************************************/
 
-if ($_POST["action"] == 'update' && $user->rights->user->user->creer && ! $_POST["cancel"])
+if ($action == 'update' && $user->rights->user->user->creer && ! $_POST["cancel"])
 {
 	$db->begin();
 
diff --git a/htdocs/user/param_ihm.php b/htdocs/user/param_ihm.php
index daa8024d5b4..c02f5833a25 100644
--- a/htdocs/user/param_ihm.php
+++ b/htdocs/user/param_ihm.php
@@ -32,11 +32,12 @@ $langs->load("admin");
 $langs->load("users");
 $langs->load("languages");
 
-$id=GETPOST('id','int');
-
 // Defini si peux lire/modifier permisssions
 $canreaduser=($user->admin || $user->rights->user->user->lire);
 
+$id = GETPOST('id','int');
+$action = GETPOST('action');
+
 if ($id)
 {
     // $user est le user qui edite, $id est l'id de l'utilisateur edite
@@ -56,7 +57,6 @@ if ($user->id == $id)	// A user can always read its own card
 $result = restrictedArea($user, 'user', $id, '', $feature2);
 if ($user->id <> $id && ! $canreaduser) accessforbidden();
 
-
 $dirtop = "../core/menus/standard";
 $dirleft = "../core/menus/standard";
 
@@ -77,13 +77,9 @@ $formadmin=new FormAdmin($db);
 /*
  * Actions
  */
-if ($_POST["action"] == 'update' && ($caneditfield  || $user->admin))
+if ($action == 'update' && ($caneditfield  || $user->admin))
 {
-    if ($_POST["cancel"])
-    {
-        $_GET["id"]=$_POST["id"];
-    }
-    else
+    if (! $_POST["cancel"])
     {
         $tabparam=array();
 
@@ -106,7 +102,7 @@ if ($_POST["action"] == 'update' && ($caneditfield  || $user->admin))
 
         $_SESSION["mainmenu"]="";   // Le gestionnaire de menu a pu changer
 
-        Header('Location: '.$_SERVER["PHP_SELF"].'?id='.$_POST["id"]);
+        Header('Location: '.$_SERVER["PHP_SELF"].'?id='.$id);
         exit;
     }
 }
@@ -152,7 +148,7 @@ if ($_GET["action"] == 'edit')
     print '<form method="post" action="'.$_SERVER["PHP_SELF"].'">';
     print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
     print '<input type="hidden" name="action" value="update">';
-    print '<input type="hidden" name="id" value="'.$_GET["id"].'">';
+    print '<input type="hidden" name="id" value="'.$id.'">';
 
     clearstatcache();
     $var=true;