From b591e6510b787f2b5a16be6151fe28ff918d4703 Mon Sep 17 00:00:00 2001
From: Regis Houssin <regis.houssin@inodbox.com>
Date: Fri, 9 Oct 2020 11:01:08 +0200
Subject: [PATCH 1/2] FIX avoid warning "Parameter must be an array"

---
 htdocs/core/class/dolgraph.class.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/htdocs/core/class/dolgraph.class.php b/htdocs/core/class/dolgraph.class.php
index 0a1686c3585..5d6327c63b0 100644
--- a/htdocs/core/class/dolgraph.class.php
+++ b/htdocs/core/class/dolgraph.class.php
@@ -533,7 +533,7 @@ class DolGraph
 		$vals = array();
 
 		$nblines = count($this->data);
-		$nbvalues = count($this->data[0]) - 1;
+		$nbvalues = (! empty($this->data[0]) ? count($this->data[0]) - 1 : 0);
 
 		for ($j = 0; $j < $nblines; $j++)
 		{
@@ -562,7 +562,7 @@ class DolGraph
 		$vals = array();
 
 		$nblines = count($this->data);
-		$nbvalues = count($this->data[0]) - 1;
+		$nbvalues = (! empty($this->data[0]) ? count($this->data[0]) - 1 : 0);
 
 		for ($j = 0; $j < $nblines; $j++)
 		{

From 12391523681122caff3ec76176412eb531ba2957 Mon Sep 17 00:00:00 2001
From: Laurent Destailleur <eldy@destailleur.fr>
Date: Fri, 9 Oct 2020 13:54:47 +0200
Subject: [PATCH 2/2] Update dolgraph.class.php

---
 htdocs/core/class/dolgraph.class.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/htdocs/core/class/dolgraph.class.php b/htdocs/core/class/dolgraph.class.php
index 5d6327c63b0..dee727cb596 100644
--- a/htdocs/core/class/dolgraph.class.php
+++ b/htdocs/core/class/dolgraph.class.php
@@ -533,7 +533,7 @@ class DolGraph
 		$vals = array();
 
 		$nblines = count($this->data);
-		$nbvalues = (! empty($this->data[0]) ? count($this->data[0]) - 1 : 0);
+		$nbvalues = (empty($this->data[0]) ? 0 : count($this->data[0]) - 1);
 
 		for ($j = 0; $j < $nblines; $j++)
 		{
@@ -562,7 +562,7 @@ class DolGraph
 		$vals = array();
 
 		$nblines = count($this->data);
-		$nbvalues = (! empty($this->data[0]) ? count($this->data[0]) - 1 : 0);
+		$nbvalues = (empty($this->data[0]) ? 0 : count($this->data[0]) - 1);
 
 		for ($j = 0; $j < $nblines; $j++)
 		{