From 0f51aa15d867b5c4a1235966b5e6f767d36f5f35 Mon Sep 17 00:00:00 2001
From: Regis Houssin <regis.houssin@capnetworks.com>
Date: Wed, 10 Jan 2018 10:52:30 +0100
Subject: [PATCH] Fix: avoid Warning: A non-numeric value encountered

---
 htdocs/contact/document.php | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/htdocs/contact/document.php b/htdocs/contact/document.php
index da8ef616a4f..eb66ae21a4f 100644
--- a/htdocs/contact/document.php
+++ b/htdocs/contact/document.php
@@ -58,9 +58,7 @@ $result = restrictedArea($user, 'contact', $id, 'socpeople&societe', '', '', 'ro
 $sortfield = GETPOST("sortfield",'alpha');
 $sortorder = GETPOST("sortorder",'alpha');
 $page = GETPOST("page",'int');
-if ($page == -1) {
-    $page = 0;
-}
+if (empty($page) || $page == -1) { $page = 0; }     // If $page is not defined, or '' or -1
 $offset = $conf->liste_limit * $page;
 $pageprev = $page - 1;
 $pagenext = $page + 1;
@@ -108,7 +106,7 @@ if ($object->id)
     }
 
     $linkback = '<a href="'.DOL_URL_ROOT.'/contact/list.php">'.$langs->trans("BackToList").'</a>';
-    
+
     $morehtmlref='<div class="refidno">';
     if (empty($conf->global->SOCIETE_DISABLE_CONTACTS))
     {
@@ -120,11 +118,11 @@ if ($object->id)
         else $morehtmlref.=$langs->trans("ContactNotLinkedToCompany");
     }
     $morehtmlref.='</div>';
-    
+
     dol_banner_tab($object, 'id', $linkback, 1, 'rowid', 'ref', $morehtmlref);
-        
+
     print '<div class="fichecenter">';
-    
+
     print '<div class="underbanner clearboth"></div>';
     print '<table class="border centpercent">';
 
@@ -147,7 +145,7 @@ if ($object->id)
     		print '</td></tr>';
     	}
     }*/
-    
+
     // Civility
     print '<tr><td class="titlefield">'.$langs->trans("UserTitle").'</td><td colspan="3">';
     print $object->getCivilityLabel();
@@ -160,7 +158,7 @@ if ($object->id)
     print '</div>';
 
     dol_fiche_end();
-    
+
     $modulepart = 'contact';
     $permission = $user->rights->societe->contact->creer;
     $permtoedit = $user->rights->societe->contact->creer;