diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 279d1342580..fcb27d0cadc 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -2426,9 +2426,9 @@ function img_printer($titlealt = "default", $other='')
 /**
  *	Show help logo with cursor "?"
  *
- * 	@param	string	$usehelpcursor		Use help cursor
- * 	@param	string	$usealttitle		Text to use as alt title
- * 	@return string      				Retourne tag img
+ * 	@param	int              	$usehelpcursor		Use help cursor
+ * 	@param	int|string	        $usealttitle		Text to use as alt title
+ * 	@return string            	           			Return tag img
  */
 function img_help($usehelpcursor = 1, $usealttitle = 1)
 {
@@ -3823,7 +3823,7 @@ function getLocalTaxesFromRate($vatrate, $local, $buyer, $seller, $firstparamisi
  *  @param	int			$idprod          	Id of product or 0 if not a predefined product
  *  @param  Societe		$thirdparty_seller  Thirdparty with a ->country_code defined (FR, US, IT, ...)
  *	@param	int			$idprodfournprice	Id product_fournisseur_price (for "supplier" order/invoice)
- *  @return int					         	<0 if KO, Vat rate if OK
+ *  @return float					        Vat rate
  *  @see get_product_localtax_for_country
  */
 function get_product_vat_for_country($idprod, $thirdparty_seller, $idprodfournprice=0)
@@ -3973,7 +3973,7 @@ function get_product_localtax_for_country($idprod, $local, $thirdparty_seller)
  *	@param  Societe		$thirdparty_buyer   	Objet societe acheteuse
  *	@param  int			$idprod					Id product
  *	@param	int			$idprodfournprice		Id product_fournisseur_price (for supplier order/invoice)
- *	@return float         				      	Taux de tva a appliquer, -1 si ne peut etre determine
+ *	@return float         				      	Vat rate to use, -1 if we can't guess it
  *  @see get_default_npr, get_default_localtax
  */
 function get_default_tva(Societe $thirdparty_seller, Societe $thirdparty_buyer, $idprod=0, $idprodfournprice=0)
@@ -4522,7 +4522,7 @@ function dol_nboflines_bis($text,$maxlinesize=0,$charset='UTF-8')
 	else $pattern = '/(<br[^>]*>)/U';							// /U is to have UNGREEDY regex to limit to one html tag.
 	$a = preg_split($pattern, $text, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
 
-	$nblines = floor((count($a)+1)/2);
+	$nblines = (int) floor((count($a)+1)/2);
 	// count possible auto line breaks
 	if($maxlinesize)
 	{