From 92ba02e3c0afbe84bd2e6acccb614c95465cc4d1 Mon Sep 17 00:00:00 2001
From: Ralf Becker <RalfBecker@outdoor-training.de>
Date: Wed, 6 Oct 2021 16:07:45 +0200
Subject: [PATCH] fix PHP 8.0 errors: key(): Argument #1 ($array) must be of
 type array, null given guarding key() from calling with null eg. $button =
 key($content['button']) --> key($content['button'] ?? []) or check before
 !empty($content['button'])

---
 inc/class.projectmanager_eroles_ui.inc.php | 4 ++--
 inc/class.projectmanager_roles_ui.inc.php  | 4 ++--
 inc/class.projectmanager_ui.inc.php        | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/inc/class.projectmanager_eroles_ui.inc.php b/inc/class.projectmanager_eroles_ui.inc.php
index b91a0294..bebe7b46 100644
--- a/inc/class.projectmanager_eroles_ui.inc.php
+++ b/inc/class.projectmanager_eroles_ui.inc.php
@@ -111,9 +111,9 @@ function eroles($content=null)
 				}
 			}
 		}
-		if ($content['delete'] || $content['edit'])
+		if (!empty($content['delete']) || !empty($content['edit']))
 		{
-			$erole = $content['delete'] ? key($content['delete']) : key($content['edit']);
+			$erole = key($content['delete'] ?? $content['edit']);
 			if(!($erole = $this->eroles->read($erole)))
 			{
 				$msg = lang('Permission denied !!!');
diff --git a/inc/class.projectmanager_roles_ui.inc.php b/inc/class.projectmanager_roles_ui.inc.php
index a421b176..01bcbcd6 100644
--- a/inc/class.projectmanager_roles_ui.inc.php
+++ b/inc/class.projectmanager_roles_ui.inc.php
@@ -113,9 +113,9 @@ function roles($content=null)
 				}
 			}
 		}
-		if ($content['delete'] || $content['edit'])
+		if (!empty($content['delete']) || !empty($content['edit']))
 		{
-			$role = $content['delete'] ? key($content['delete']) : key($content['edit']);
+			$role = key($content['delete'] ?? $content['edit']);
 			if(!($role = $this->roles->read($role)) ||
 				$role['pm_id'] && !$this->check_acl(EGW_ACL_ROLES,$role['pm_id']) ||
 				!$role['pm_id'] && !$this->is_admin)
diff --git a/inc/class.projectmanager_ui.inc.php b/inc/class.projectmanager_ui.inc.php
index 95320f91..bc520f42 100644
--- a/inc/class.projectmanager_ui.inc.php
+++ b/inc/class.projectmanager_ui.inc.php
@@ -521,7 +521,7 @@ function edit($content=null,$view=false)
 				{
 					reset($sel_options['pm_accounting_type']);
 					$content['pm_accounting_type'] = $preserv['pm_accounting_type'] =
-						key($sel_options['pm_accounting_type']);
+						key($sel_options['pm_accounting_type'] ?? []);
 				}
 				$readonlys['pm_accounting_type'] = true;
 			}
@@ -728,11 +728,11 @@ function pm_list($content=null,$msg='')
 		$delete_sources = $content['delete_sources'];
 		$content = $content['nm']['rows'];
 
-		if ($content['delete'] || $content['ganttchart'])
+		if (!empty($content['delete']) || !empty($content['ganttchart']))
 		{
 			foreach(array('delete','ganttchart') as $action)
 			{
-				if ($content[$action])
+				if (!empty($content[$action]))
 				{
 					$pm_id = key($content[$action]);
 					break;