diff --git a/htdocs/accountancy/journal/purchasesjournal.php b/htdocs/accountancy/journal/purchasesjournal.php
index 5ca1197b3e2..2fbf056b0b9 100644
--- a/htdocs/accountancy/journal/purchasesjournal.php
+++ b/htdocs/accountancy/journal/purchasesjournal.php
@@ -166,14 +166,13 @@ if ($action == 'writebookkeeping') {
 	$now = dol_now();
 	$error = 0;
 
-	foreach ( $tabfac as $key => $val ) {
-
+	foreach ($tabfac as $key => $val) 
+	{
 		$companystatic = new Societe($db);
 		$invoicestatic = new FactureFournisseur($db);
 
 		$invoicestatic->id = $key;
-		$invoicestatic->ref = $val["ref"];
-		$invoicestatic->ref = $val["refsologest"];
+		$invoicestatic->ref = (string) $val["refsologest"];
 		$invoicestatic->refsupplier = $val["refsuppliersologest"];
 		$invoicestatic->type = $val["type"];
 		$invoicestatic->description = html_entity_decode(dol_trunc($val["description"], 32));
diff --git a/htdocs/accountancy/journal/sellsjournal.php b/htdocs/accountancy/journal/sellsjournal.php
index 5da210ca09a..c462f036a9f 100644
--- a/htdocs/accountancy/journal/sellsjournal.php
+++ b/htdocs/accountancy/journal/sellsjournal.php
@@ -207,7 +207,7 @@ if ($action == 'writebookkeeping') {
 		$companystatic->client = $tabcompany[$key]['code_client'];
 
 		$invoicestatic->id = $key;
-		$invoicestatic->ref = $val["ref"];
+		$invoicestatic->ref = (string) $val["ref"];
 
 		foreach ( $tabttc[$key] as $k => $mt ) {
 			$bookkeeping = new BookKeeping($db);
diff --git a/htdocs/adherents/class/adherent.class.php b/htdocs/adherents/class/adherent.class.php
index 33e4d0bec0d..e12c49732dd 100644
--- a/htdocs/adherents/class/adherent.class.php
+++ b/htdocs/adherents/class/adherent.class.php
@@ -316,7 +316,7 @@ class Adherent extends CommonObject
             if ($id > 0)
             {
                 $this->id=$id;
-                $this->ref=$id;
+                $this->ref=(string) $id;
 
                 // Update minor fields
                 $result=$this->update($user,1,1,0,0,'add'); // nosync is 1 to avoid update data of user
@@ -1578,6 +1578,7 @@ class Adherent extends CommonObject
             $label.= '<br><b>' . $langs->trans('Name') . ':</b> ' . $this->getFullName($langs);
         $linkclose = '" title="'.dol_escape_htmltag($label, 1).'" class="classfortooltip">';
 
+        $link=''; $linkend='';
         if ($option == 'card')
         {
             $link = '<a href="'.DOL_URL_ROOT.'/adherents/card.php?rowid='.$this->id.$linkclose;
diff --git a/htdocs/adherents/class/cotisation.class.php b/htdocs/adherents/class/cotisation.class.php
index 40527e6e22e..786ba79c7f3 100644
--- a/htdocs/adherents/class/cotisation.class.php
+++ b/htdocs/adherents/class/cotisation.class.php
@@ -213,7 +213,7 @@ class Cotisation extends CommonObject
 				$result=$member->fetch($this->fk_adherent);
 				$result=$member->update_end_date($user);
 
-				if ($accountline->id > 0)						// If we found bank account line (this means this->fk_bank defined)
+				if (is_object($accountline) && $accountline->id > 0)						// If we found bank account line (this means this->fk_bank defined)
 				{
 					$result=$accountline->delete($user);		// Return false if refused because line is conciliated
 					if ($result > 0)
diff --git a/htdocs/categories/categorie.php b/htdocs/categories/categorie.php
index 1775c14767d..c347b4863c7 100644
--- a/htdocs/categories/categorie.php
+++ b/htdocs/categories/categorie.php
@@ -617,13 +617,14 @@ else if ($id || $ref)
  * 	@param		Object		$object				Object we want to see categories it can be classified into
  * 	@param		int			$typeid				Type of category (0, 1, 2, 3)
  *  @param		int			$socid				Id thirdparty
- *  @param		int		$showclassifyform	1=Add form to 'Classify', 0=Do not show form to 'Classify'
+ *  @param		int		    $showclassifyform	1=Add form to 'Classify', 0=Do not show form to 'Classify'
  *  @return		int			0
  */
 function formCategory($db,$object,$typeid,$socid=0,$showclassifyform=1)
 {
 	global $user,$langs,$form,$bc;
 
+	$title='NotDefined';
 	if ($typeid == Categorie::TYPE_PRODUCT)     $title = $langs->trans("ProductsCategoriesShort");
 	if ($typeid == Categorie::TYPE_SUPPLIER)    $title = $langs->trans("SuppliersCategoriesShort");
 	if ($typeid == Categorie::TYPE_CUSTOMER)    $title = $langs->trans("CustomersProspectsCategoriesShort");
diff --git a/htdocs/compta/facture/class/facture-rec.class.php b/htdocs/compta/facture/class/facture-rec.class.php
index 357835fbb77..1d75be61f6c 100644
--- a/htdocs/compta/facture/class/facture-rec.class.php
+++ b/htdocs/compta/facture/class/facture-rec.class.php
@@ -509,7 +509,7 @@ class FactureRec extends CommonInvoice
 	    
 		$facid=$this->id;
 
-		dol_syslog(get_class($this)."::addline facid=$facid,desc=$desc,pu_ht=$pu_ht,qty=$qty,txtva=$txtva,fk_product=$fk_product,remise_percent=$remise_percent,date_start=$date_start,date_end=$date_end,ventil=$ventil,info_bits=$info_bits,fk_remise_except=$fk_remise_except,price_base_type=$price_base_type,pu_ttc=$pu_ttc,type=$type,fk_unit=$fk_unit", LOG_DEBUG);
+		dol_syslog(get_class($this)."::addline facid=$facid,desc=$desc,pu_ht=$pu_ht,qty=$qty,txtva=$txtva,fk_product=$fk_product,remise_percent=$remise_percent,info_bits=$info_bits,fk_remise_except=$fk_remise_except,price_base_type=$price_base_type,pu_ttc=$pu_ttc,type=$type,fk_unit=$fk_unit", LOG_DEBUG);
 		include_once DOL_DOCUMENT_ROOT.'/core/lib/price.lib.php';
 
 		// Check parameters
@@ -631,7 +631,7 @@ class FactureRec extends CommonInvoice
 	     
 	    $facid=$this->id;
 	
-	    dol_syslog(get_class($this)."::updateline facid=".$facid." rowid=$rowid,desc=$desc,pu_ht=$pu_ht,qty=$qty,txtva=$txtva,fk_product=$fk_product,remise_percent=$remise_percent,date_start=$date_start,date_end=$date_end,ventil=$ventil,info_bits=$info_bits,fk_remise_except=$fk_remise_except,price_base_type=$price_base_type,pu_ttc=$pu_ttc,type=$type,fk_unit=$fk_unit", LOG_DEBUG);
+	    dol_syslog(get_class($this)."::updateline facid=".$facid." rowid=$rowid,desc=$desc,pu_ht=$pu_ht,qty=$qty,txtva=$txtva,fk_product=$fk_product,remise_percent=$remise_percent,info_bits=$info_bits,fk_remise_except=$fk_remise_except,price_base_type=$price_base_type,pu_ttc=$pu_ttc,type=$type,fk_unit=$fk_unit", LOG_DEBUG);
 	    include_once DOL_DOCUMENT_ROOT.'/core/lib/price.lib.php';
 	
 	    // Check parameters