diff --git a/htdocs/core/tpl/list_print_total.tpl.php b/htdocs/core/tpl/list_print_total.tpl.php
index 543bb939850..ec60dc36679 100644
--- a/htdocs/core/tpl/list_print_total.tpl.php
+++ b/htdocs/core/tpl/list_print_total.tpl.php
@@ -13,7 +13,7 @@ if (isset($totalarray['pos'])) {
 	while ($i < $totalarray['nbfield']) {
 		$i++;
 		if (!empty($totalarray['pos'][$i])) {
-			print '<td class="right">'.price($totalarray['val'][$totalarray['pos'][$i]]).'</td>';
+			print '<td class="right">'.price(!empty($totalarray['val'][$totalarray['pos'][$i]])?:0).'</td>';
 		} else {
 			if ($i == 1) {
 				if (is_null($limit) || $num < $limit) {
diff --git a/htdocs/eventorganization/conferenceorbooth_list.php b/htdocs/eventorganization/conferenceorbooth_list.php
index 0deb1707cfc..a82b39c1a76 100644
--- a/htdocs/eventorganization/conferenceorbooth_list.php
+++ b/htdocs/eventorganization/conferenceorbooth_list.php
@@ -494,7 +494,7 @@ $reshook = $hookmanager->executeHooks('printFieldListSelect', $parameters, $obje
 $sql .= preg_replace('/^,/', '', $hookmanager->resPrint);
 $sql = preg_replace('/,\s*$/', '', $sql);
 $sql .= " FROM ".MAIN_DB_PREFIX.$object->table_element." as t";
-if (is_array($extrafields->attributes[$object->table_element]['label']) && count($extrafields->attributes[$object->table_element]['label'])) {
+if (!empty($extrafields->attributes[$object->table_element]['label']) && is_array($extrafields->attributes[$object->table_element]['label']) && count($extrafields->attributes[$object->table_element]['label'])) {
 	$sql .= " LEFT JOIN ".MAIN_DB_PREFIX.$object->table_element."_extrafields as ef on (t.id = ef.fk_object)";
 }
 $sql .= " INNER JOIN ".MAIN_DB_PREFIX."c_actioncomm as cact ON cact.id=t.fk_action AND cact.module LIKE '%@eventorganization'";
@@ -710,11 +710,11 @@ foreach ($object->fields as $key => $val) {
 	if (!empty($arrayfields['t.'.$key]['checked'])) {
 		print '<td class="liste_titre'.($cssforfield ? ' '.$cssforfield : '').'">';
 		if (!empty($val['arrayofkeyval']) && is_array($val['arrayofkeyval'])) {
-			print $form->selectarray('search_'.$key, $val['arrayofkeyval'], $search[$key], $val['notnull'], 0, 0, '', 1, 0, 0, '', 'maxwidth100', 1);
+			print $form->selectarray('search_'.$key, $val['arrayofkeyval'], !empty($search[$key])?:'', $val['notnull'], 0, 0, '', 1, 0, 0, '', 'maxwidth100', 1);
 		} elseif ((strpos($val['type'], 'integer:') === 0) || (strpos($val['type'], 'sellist:')=== 0)) {
-			print $object->showInputField($val, $key, $search[$key], '', '', 'search_', 'maxwidth125', 1);
+			print $object->showInputField($val, $key, !empty($search[$key])?:'', '', '', 'search_', 'maxwidth125', 1);
 		} elseif (!preg_match('/^(date|timestamp|datetime)/', $val['type'])) {
-			print '<input type="text" class="flat maxwidth75" name="search_'.$key.'" value="'.dol_escape_htmltag($search[$key]).'">';
+			print '<input type="text" class="flat maxwidth75" name="search_'.$key.'" value="'.dol_escape_htmltag(!empty($search[$key])?:'').'">';
 		} elseif (preg_match('/^(date|timestamp|datetime)/', $val['type'])) {
 			print '<div class="nowrap">';
 			print $form->selectDate($search[$key.'_dtstart'] ? $search[$key.'_dtstart'] : '', "search_".$key."_dtstart", 0, 0, 1, '', 1, 0, 0, '', '', '', '', 1, '', $langs->trans('From'));
@@ -772,7 +772,7 @@ print '</tr>'."\n";
 
 // Detect if we need a fetch on each output line
 $needToFetchEachLine = 0;
-if (is_array($extrafields->attributes[$object->table_element]['computed']) && count($extrafields->attributes[$object->table_element]['computed']) > 0) {
+if (!empty($extrafields->attributes[$object->table_element]['computed']) && is_array($extrafields->attributes[$object->table_element]['computed']) && count($extrafields->attributes[$object->table_element]['computed']) > 0) {
 	foreach ($extrafields->attributes[$object->table_element]['computed'] as $key => $val) {
 		if (preg_match('/\$object/', $val)) {
 			$needToFetchEachLine++; // There is at least one compute field that use $object
@@ -796,6 +796,7 @@ while ($i < ($limit ? min($num, $limit) : $num)) {
 
 	// Show here line of result
 	print '<tr class="oddeven">';
+	$totalarray['nbfield'] = 0;
 	foreach ($object->fields as $key => $val) {
 		$cssforfield = (empty($val['css']) ? '' : $val['css']);
 		if (in_array($val['type'], array('date', 'datetime', 'timestamp'))) {
diff --git a/htdocs/projet/activity/perday.php b/htdocs/projet/activity/perday.php
index 29a3c40209c..06ae3a018a6 100644
--- a/htdocs/projet/activity/perday.php
+++ b/htdocs/projet/activity/perday.php
@@ -77,6 +77,9 @@ $search_project_ref = GETPOST('search_project_ref', 'alpha');
 $search_thirdparty = GETPOST('search_thirdparty', 'alpha');
 $search_declared_progress = GETPOST('search_declared_progress', 'alpha');
 
+$sortfield = GETPOST("sortfield", 'alpha');
+$sortorder = GETPOST("sortorder", 'alpha');
+
 $monthofday = GETPOST('addtimemonth');
 $dayofday = GETPOST('addtimeday');
 $yearofday = GETPOST('addtimeyear');
@@ -127,7 +130,7 @@ $arrayfields['timeconsumed'] = array('label'=>'TimeConsumed', 'checked'=>1, 'ena
  );
  */
 // Extra fields
-if (is_array($extrafields->attributes[$object->table_element]['label']) && count($extrafields->attributes[$object->table_element]['label']) > 0) {
+if (!empty($extrafields->attributes[$object->table_element]['label']) && is_array($extrafields->attributes[$object->table_element]['label']) && count($extrafields->attributes[$object->table_element]['label']) > 0) {
 	foreach ($extrafields->attributes[$object->table_element]['label'] as $key => $val) {
 		if (!empty($extrafields->attributes[$object->table_element]['list'][$key])) {
 			$arrayfields["efpt.".$key] = array('label'=>$extrafields->attributes[$object->table_element]['label'][$key], 'checked'=>(($extrafields->attributes[$object->table_element]['list'][$key] < 0) ? 0 : 1), 'position'=>$extrafields->attributes[$object->table_element]['pos'][$key], 'enabled'=>(abs((int) $extrafields->attributes[$object->table_element]['list'][$key]) != 3 && $extrafields->attributes[$object->table_element]['perms'][$key]));
@@ -612,6 +615,8 @@ print '<th class="center leftborder">'.$langs->trans("HourStart").'</td>';
 // By default, we can edit only tasks we are assigned to
 $restrictviewformytask = ((!isset($conf->global->PROJECT_TIME_SHOW_TASK_NOT_ASSIGNED)) ? 2 : $conf->global->PROJECT_TIME_SHOW_TASK_NOT_ASSIGNED);
 
+$numendworkingday = 0;
+$numstartworkingday = 0;
 // Get if user is available or not for each day
 $isavailable = array();
 if (!empty($conf->global->MAIN_DEFAULT_WORKING_DAYS)) {
@@ -776,7 +781,7 @@ print '</div>';
 print '<input type="hidden" id="numberOfLines" name="numberOfLines" value="'.count($tasksarray).'"/>'."\n";
 
 print '<div class="center">';
-print '<input type="submit" name="button_addtime" class="button button-save"'.($disabledtask ? ' disabled' : '').' value="'.$langs->trans("Save").'">';
+print '<input type="submit" name="button_addtime" class="button button-save"'.(!empty($disabledtask) ? ' disabled' : '').' value="'.$langs->trans("Save").'">';
 print '</div>';
 
 print '</form>';
diff --git a/htdocs/projet/activity/perweek.php b/htdocs/projet/activity/perweek.php
index 08304cecaab..d529cadeb02 100644
--- a/htdocs/projet/activity/perweek.php
+++ b/htdocs/projet/activity/perweek.php
@@ -77,6 +77,9 @@ $search_project_ref = GETPOST('search_project_ref', 'alpha');
 $search_thirdparty = GETPOST('search_thirdparty', 'alpha');
 $search_declared_progress = GETPOST('search_declared_progress', 'alpha');
 
+$sortfield = GETPOST("sortfield", 'alpha');
+$sortorder = GETPOST("sortorder", 'alpha');
+
 $startdayarray = dol_get_first_day_week($day, $month, $year);
 
 $prev = $startdayarray;
@@ -135,7 +138,7 @@ $arrayfields['timeconsumed'] = array('label'=>'TimeConsumed', 'checked'=>1, 'ena
  }*/
 // Definition of fields for list
 // Extra fields
-if (is_array($extrafields->attributes['projet_task']['label']) && count($extrafields->attributes['projet_task']['label']) > 0) {
+if (!empty($extrafields->attributes['projet_task']['label']) && is_array($extrafields->attributes['projet_task']['label']) && count($extrafields->attributes['projet_task']['label']) > 0) {
 	foreach ($extrafields->attributes['projet_task']['label'] as $key => $val) {
 		if (!empty($extrafields->attributes['projet_task']['list'][$key])) {
 			$arrayfields["efpt.".$key] = array('label'=>$extrafields->attributes['projet_task']['label'][$key], 'checked'=>(($extrafields->attributes['projet_task']['list'][$key] < 0) ? 0 : 1), 'position'=>$extrafields->attributes['projet_task']['pos'][$key], 'enabled'=>(abs((int) $extrafields->attributes['projet_task']['list'][$key]) != 3 && $extrafields->attributes['projet_task']['perms'][$key]));
@@ -501,6 +504,8 @@ print '<div class="clearboth" style="padding-bottom: 20px;"></div>';
 
 $startday = dol_mktime(12, 0, 0, $startdayarray['first_month'], $startdayarray['first_day'], $startdayarray['first_year']);
 
+$numendworkingday = 0;
+$numstartworkingday = 0;
 // Get if user is available or not for each day
 $isavailable = array();
 if (!empty($conf->global->MAIN_DEFAULT_WORKING_DAYS)) {
diff --git a/htdocs/projet/tasks/list.php b/htdocs/projet/tasks/list.php
index e1ed162f9c2..6e44b8352ad 100644
--- a/htdocs/projet/tasks/list.php
+++ b/htdocs/projet/tasks/list.php
@@ -67,11 +67,13 @@ $search_task_user = GETPOST('search_task_user', 'int');
 $search_task_progress = GETPOST('search_task_progress');
 $search_task_budget_amount = GETPOST('search_task_budget_amount');
 $search_societe = GETPOST('search_societe');
+$search_opp_status = GETPOST('$search_projectstatus');
 
-$mine = $_REQUEST['mode'] == 'mine' ? 1 : 0;
+$mine = (!empty($_REQUEST['mode']) && $_REQUEST['mode'] == 'mine') ? 1 : 0;
 if ($mine) {
 	$search_task_user = $user->id; $mine = 0;
 }
+$type = GETPOST('type');
 
 $search_date_startday = GETPOST('search_date_startday', 'int');
 $search_date_startmonth = GETPOST('search_date_startmonth', 'int');
@@ -346,7 +348,7 @@ $sql .= ", ".MAIN_DB_PREFIX."projet_task as t";
 if (!empty($arrayfields['t.tobill']['checked']) || !empty($arrayfields['t.billed']['checked'])) {
 	$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."projet_task_time as tt ON tt.fk_task = t.rowid";
 }
-if (is_array($extrafields->attributes[$object->table_element]['label']) && count($extrafields->attributes[$object->table_element]['label'])) {
+if (!empty($extrafields->attributes[$object->table_element]['label']) && is_array($extrafields->attributes[$object->table_element]['label']) && count($extrafields->attributes[$object->table_element]['label'])) {
 	$sql .= " LEFT JOIN ".MAIN_DB_PREFIX.$object->table_element."_extrafields as ef on (t.rowid = ef.fk_object)";
 }
 if ($search_project_user > 0) {
@@ -634,7 +636,7 @@ if ($search_all) {
 	print '<div class="divsearchfieldfilter">'.$langs->trans("FilterOnInto", $search_all).join(', ', $fieldstosearchall).'</div>';
 }
 
-$morehtmlfilter = '';
+$moreforfilter = '';
 
 // Filter on categories
 if (!empty($conf->categorie->enabled) && $user->rights->categorie->lire) {