From 4dcdb9e4bda8d8e65225eb3242eda2bf379a9b3c Mon Sep 17 00:00:00 2001
From: Kijin Sung <kijin@kijinsung.com>
Date: Fri, 8 Jan 2021 00:27:00 +0900
Subject: [PATCH] Fix various warnings in PHP 8.0

---
 classes/context/Context.class.php        | 2 +-
 modules/document/document.controller.php | 2 +-
 modules/document/document.item.php       | 7 ++++++-
 modules/document/document.model.php      | 2 +-
 modules/editor/editor.model.php          | 2 +-
 5 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/classes/context/Context.class.php b/classes/context/Context.class.php
index 210304486..160082ccf 100644
--- a/classes/context/Context.class.php
+++ b/classes/context/Context.class.php
@@ -2293,7 +2293,7 @@ class Context
 			$plugin_name = 'ui';
 		}
 
-		if($loaded_plugins[$plugin_name])
+		if(isset($loaded_plugins[$plugin_name]))
 		{
 			return;
 		}
diff --git a/modules/document/document.controller.php b/modules/document/document.controller.php
index 7b5022a42..2e462bbd4 100644
--- a/modules/document/document.controller.php
+++ b/modules/document/document.controller.php
@@ -1355,7 +1355,7 @@ class documentController extends document
 		$oDB->commit();
 
 		// Register session
-		if(!$_SESSION['banned_document'][$document_srl] && Context::getSessionStatus()) 
+		if(!isset($_SESSION['readed_document'][$document_srl]) && Context::getSessionStatus()) 
 		{
 			$_SESSION['readed_document'][$document_srl] = true;
 		}
diff --git a/modules/document/document.item.php b/modules/document/document.item.php
index 111cee45f..51f07c870 100644
--- a/modules/document/document.item.php
+++ b/modules/document/document.item.php
@@ -30,6 +30,11 @@ class documentItem extends BaseObject
 	 * @var bool
 	 */
 	var $allow_trackback_status = null;
+	/**
+	 * Comment page navigation
+	 * @var object
+	 */
+	var $comment_page_navigation = null;
 	/**
 	 * column list
 	 * @var array
@@ -1459,7 +1464,7 @@ class documentItem extends BaseObject
 		if(!isset($GLOBALS['__member_signature_max_height']))
 		{
 			$member_config = ModuleModel::getModuleConfig('member');
-			$GLOBALS['__member_signature_max_height'] = $member_config->signature_max_height;
+			$GLOBALS['__member_signature_max_height'] = $member_config->signature_max_height ?? 100;
 		}
 		if($signature)
 		{
diff --git a/modules/document/document.model.php b/modules/document/document.model.php
index 1aa5c0367..bcdbd99d1 100644
--- a/modules/document/document.model.php
+++ b/modules/document/document.model.php
@@ -1307,7 +1307,7 @@ class documentModel extends document
 		$args->page_count = $searchOpt->page_count ?? 10;
 		$args->start_date = $searchOpt->start_date ?? null;
 		$args->end_date = $searchOpt->end_date ?? null;
-		$args->s_is_notice = $searchOpt->except_notice ? 'N' : null;
+		$args->s_is_notice = ($searchOpt->except_notice ?? false) ? 'N' : null;
 		$args->statusList = $searchOpt->statusList ?? array(self::getConfigStatus('public'), self::getConfigStatus('secret'));
 		$args->columnList = $searchOpt->columnList ?? array();
 		
diff --git a/modules/editor/editor.model.php b/modules/editor/editor.model.php
index 9f6b4126c..9d98cdf79 100644
--- a/modules/editor/editor.model.php
+++ b/modules/editor/editor.model.php
@@ -262,7 +262,7 @@ class editorModel extends editor
 		Context::set('files_count', (int)$files_count);
 
 		// Check an option whether to start the editor manually.
-		Context::set('editor_manual_start', $option->manual_start);
+		Context::set('editor_manual_start', $option->manual_start ?? null);
 
 		// Compile and return the editor skin template.
 		$tpl_path = Context::get('editor_path');