diff --git a/phpBB/includes/acp/acp_board.php b/phpBB/includes/acp/acp_board.php
index 05871e4157..2441a37edc 100644
--- a/phpBB/includes/acp/acp_board.php
+++ b/phpBB/includes/acp/acp_board.php
@@ -101,6 +101,7 @@ class acp_board
 						'allow_bookmarks'				=> array('lang' => 'ALLOW_BOOKMARKS',				'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
 						'allow_birthdays'				=> array('lang' => 'ALLOW_BIRTHDAYS',				'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
 						'display_last_subject'			=> array('lang' => 'DISPLAY_LAST_SUBJECT',			'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
+						'display_unapproved_posts'		=> array('lang' => 'DISPLAY_UNAPPROVED_POSTS',		'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
 						'allow_quick_reply'				=> array('lang' => 'ALLOW_QUICK_REPLY',				'validate' => 'bool',	'type' => 'custom', 'method' => 'quick_reply', 'explain' => true),
 
 						'legend2'							=> 'ACP_SUBMIT_CHANGES',
diff --git a/phpBB/language/en/acp/board.php b/phpBB/language/en/acp/board.php
index fdc02d9ae8..cb9013805d 100644
--- a/phpBB/language/en/acp/board.php
+++ b/phpBB/language/en/acp/board.php
@@ -52,6 +52,8 @@ $lang = array_merge($lang, array(
 	'DISABLE_BOARD_EXPLAIN'			=> 'This will make the board unavailable to users who are neither administrators nor moderators. You can also enter a short (255 character) message to display if you wish.',
 	'DISPLAY_LAST_SUBJECT'			=> 'Display subject of last added post on forum list',
 	'DISPLAY_LAST_SUBJECT_EXPLAIN'	=> 'The subject of the last added post will be displayed in the forum list with a hyperlink to the post. Subjects from password protected forums and forums in which user doesn’t have read access are not shown.',
+	'DISPLAY_UNAPPROVED_POSTS'		=> 'Display unapproved posts to the author',
+	'DISPLAY_UNAPPROVED_POSTS_EXPLAIN'	=> 'Unapproved posts can be viewed by the author. Does not apply to Guest posts.',
 	'GUEST_STYLE'					=> 'Guest style',
 	'GUEST_STYLE_EXPLAIN'			=> 'The board style for guests.',
 	'OVERRIDE_STYLE'				=> 'Override user style',
diff --git a/phpBB/language/en/common.php b/phpBB/language/en/common.php
index 8190bad83c..609ae4fe53 100644
--- a/phpBB/language/en/common.php
+++ b/phpBB/language/en/common.php
@@ -616,6 +616,7 @@ $lang = array_merge($lang, array(
 	'POST_TOPIC'			=> 'Post a new topic',
 	'POST_UNAPPROVED_ACTION'	=> 'Post awaiting approval:',
 	'POST_UNAPPROVED'		=> 'This post has not been approved.',
+	'POST_UNAPPROVED_EXPLAIN'	=> 'This post is not visible to other users until it has been approved by a moderator.',
 	'POWERED_BY'			=> 'Powered by %s',
 	'PREVIEW'				=> 'Preview',
 	'PREVIOUS'				=> 'Previous',		// Used in pagination
diff --git a/phpBB/phpbb/content_visibility.php b/phpBB/phpbb/content_visibility.php
index 704ec6badb..fbc56f3db2 100644
--- a/phpBB/phpbb/content_visibility.php
+++ b/phpBB/phpbb/content_visibility.php
@@ -144,7 +144,14 @@ class content_visibility
 	*/
 	public function is_visible($mode, $forum_id, $data)
 	{
-		$is_visible = $this->auth->acl_get('m_approve', $forum_id) || $data[$mode . '_visibility'] == ITEM_APPROVED;
+		$visibility = $data[$mode . '_visibility'];
+		$poster_key = ($mode === 'topic') ? 'topic_poster' : 'poster_id';
+		$is_visible = ($visibility == ITEM_APPROVED) ||
+			($this->config['display_unapproved_posts'] &&
+				($this->user->data['user_id'] != ANONYMOUS) &&
+				($visibility == ITEM_UNAPPROVED || $visibility == ITEM_REAPPROVE) &&
+				($this->user->data['user_id'] == $data[$poster_key])) ||
+			 $this->auth->acl_get('m_approve', $forum_id);
 
 		/**
 		* Allow changing the result of calling is_visible
@@ -216,9 +223,16 @@ class content_visibility
 		}
 		else
 		{
-			$where_sql .= $table_alias . $mode . '_visibility = ' . ITEM_APPROVED;
-		}
+			$visibility_query = $table_alias . $mode . '_visibility = ';
 
+			$where_sql .= '(' . $visibility_query . ITEM_APPROVED . ')';
+			if ($this->config['display_unapproved_posts'] && ($this->user->data['user_id'] != ANONYMOUS))
+			{
+				$poster_key = ($mode === 'topic') ? 'topic_poster' : 'poster_id';
+				$where_sql .= ' OR ((' . $visibility_query . ITEM_UNAPPROVED . ' OR ' . $visibility_query . ITEM_REAPPROVE .')';
+				$where_sql .= ' AND ' . $table_alias . $poster_key . ' = ' . ((int) $this->user->data['user_id']) . ')';
+			}
+		}
 		return '(' . $where_sql . ')';
 	}
 
diff --git a/phpBB/phpbb/db/migration/data/v330/add_display_unapproved_posts_config.php b/phpBB/phpbb/db/migration/data/v330/add_display_unapproved_posts_config.php
new file mode 100644
index 0000000000..b429270827
--- /dev/null
+++ b/phpBB/phpbb/db/migration/data/v330/add_display_unapproved_posts_config.php
@@ -0,0 +1,24 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\db\migration\data\v330;
+
+class add_display_unapproved_posts_config extends \phpbb\db\migration\migration
+{
+	public function update_data()
+	{
+		return [
+			['config.add', ['display_unapproved_posts', 1]],
+		];
+	}
+}
diff --git a/phpBB/styles/prosilver/template/viewtopic_body.html b/phpBB/styles/prosilver/template/viewtopic_body.html
index 9bfa07e52b..6af33f2f87 100644
--- a/phpBB/styles/prosilver/template/viewtopic_body.html
+++ b/phpBB/styles/prosilver/template/viewtopic_body.html
@@ -294,6 +294,7 @@
 			<!-- EVENT viewtopic_body_postrow_post_details_after -->
 
 			<!-- IF postrow.S_POST_UNAPPROVED -->
+			<!-- IF postrow.S_CAN_APPROVE -->
 			<form method="post" class="mcp_approve" action="{postrow.U_APPROVE_ACTION}">
 				<p class="post-notice unapproved">
 					<span><i class="icon fa-question icon-red fa-fw" aria-hidden="true"></i></span>
@@ -304,6 +305,12 @@
 					{S_FORM_TOKEN}
 				</p>
 			</form>
+			<!-- ELSE -->
+				<p class="post-notice unapproved">
+					<span><i class="icon fa-exclamation icon-red fa-fw" aria-hidden="true"></i></span>
+					<strong>{L_POST_UNAPPROVED_EXPLAIN}</strong>
+				</p>
+			<!-- ENDIF -->
 			<!-- ELSEIF postrow.S_POST_DELETED -->
 			<form method="post" class="mcp_approve" action="{postrow.U_APPROVE_ACTION}">
 				<p class="post-notice deleted">
diff --git a/phpBB/viewforum.php b/phpBB/viewforum.php
index 4691512cbd..eb6b37ada8 100644
--- a/phpBB/viewforum.php
+++ b/phpBB/viewforum.php
@@ -899,6 +899,11 @@ if (count($topic_list))
 
 		// Replies
 		$replies = $phpbb_content_visibility->get_count('topic_posts', $row, $topic_forum_id) - 1;
+		// Correction for case of unapproved topic visible to poster
+		if ($replies < 0)
+		{
+			$replies = 0;
+		}
 
 		if ($row['topic_status'] == ITEM_MOVED)
 		{
diff --git a/phpBB/viewtopic.php b/phpBB/viewtopic.php
index 4e502538c8..df241a5e8b 100644
--- a/phpBB/viewtopic.php
+++ b/phpBB/viewtopic.php
@@ -2092,6 +2092,7 @@ for ($i = 0, $end = count($post_list); $i < $end; ++$i)
 		'S_HAS_ATTACHMENTS'	=> (!empty($attachments[$row['post_id']])) ? true : false,
 		'S_MULTIPLE_ATTACHMENTS'	=> !empty($attachments[$row['post_id']]) && count($attachments[$row['post_id']]) > 1,
 		'S_POST_UNAPPROVED'	=> ($row['post_visibility'] == ITEM_UNAPPROVED || $row['post_visibility'] == ITEM_REAPPROVE) ? true : false,
+		'S_CAN_APPROVE'		=> $auth->acl_get('m_approve', $forum_id),
 		'S_POST_DELETED'	=> ($row['post_visibility'] == ITEM_DELETED) ? true : false,
 		'L_POST_DELETED_MESSAGE'	=> $l_deleted_message,
 		'S_POST_REPORTED'	=> ($row['post_reported'] && $auth->acl_get('m_report', $forum_id)) ? true : false,
diff --git a/tests/content_visibility/fixtures/get_visibility_sql.xml b/tests/content_visibility/fixtures/get_visibility_sql.xml
index 146244263e..2128064986 100644
--- a/tests/content_visibility/fixtures/get_visibility_sql.xml
+++ b/tests/content_visibility/fixtures/get_visibility_sql.xml
@@ -3,17 +3,20 @@
 	<table name="phpbb_topics">
 		<column>topic_id</column>
 		<column>forum_id</column>
+		<column>topic_poster</column>
 		<column>topic_visibility</column>
 		<column>topic_title</column>
 		<row>
 			<value>1</value>
 			<value>1</value>
 			<value>0</value>
+			<value>0</value>
 			<value>Unapproved</value>
 		</row>
 		<row>
 			<value>2</value>
 			<value>1</value>
+			<value>0</value>
 			<value>1</value>
 			<value>Approved</value>
 		</row>
@@ -21,13 +24,22 @@
 			<value>3</value>
 			<value>1</value>
 			<value>2</value>
+			<value>0</value>
 			<value>Softdeleted</value>
 		</row>
+		<row>
+			<value>4</value>
+			<value>1</value>
+			<value>1</value>
+			<value>0</value>
+			<value>Unapproved</value>
+		</row>
 	</table>
 	<table name="phpbb_posts">
 		<column>post_id</column>
 		<column>topic_id</column>
 		<column>forum_id</column>
+		<column>poster_id</column>
 		<column>post_visibility</column>
 		<column>post_text</column>
 		<row>
@@ -35,12 +47,14 @@
 			<value>1</value>
 			<value>1</value>
 			<value>0</value>
+			<value>0</value>
 			<value>Unapproved</value>
 		</row>
 		<row>
 			<value>2</value>
 			<value>2</value>
 			<value>1</value>
+			<value>0</value>
 			<value>1</value>
 			<value>Approved</value>
 		</row>
@@ -48,8 +62,17 @@
 			<value>3</value>
 			<value>3</value>
 			<value>1</value>
+			<value>0</value>
 			<value>2</value>
 			<value>Softdeleted</value>
 		</row>
+		<row>
+			<value>4</value>
+			<value>4</value>
+			<value>1</value>
+			<value>1</value>
+			<value>0</value>
+			<value>Unapproved</value>
+		</row>
 	</table>
 </dataset>
diff --git a/tests/content_visibility/get_visibility_sql_test.php b/tests/content_visibility/get_visibility_sql_test.php
index 18802fadbc..6026778487 100644
--- a/tests/content_visibility/get_visibility_sql_test.php
+++ b/tests/content_visibility/get_visibility_sql_test.php
@@ -21,8 +21,11 @@ class phpbb_content_visibility_get_visibility_sql_test extends phpbb_database_te
 	public function get_visibility_sql_data()
 	{
 		return array(
+			// data set 0: display_unapproved_posts=false, moderator, can see all posts
 			array(
 				'phpbb_posts',
+				0,
+				false,
 				'post', 1, '',
 				array(
 					array('m_approve', 1, true),
@@ -31,10 +34,14 @@ class phpbb_content_visibility_get_visibility_sql_test extends phpbb_database_te
 					array('post_id' => 1),
 					array('post_id' => 2),
 					array('post_id' => 3),
+					array('post_id' => 4),
 				),
 			),
+			// data set 1: display_unapproved_posts=false, normal user, cannot see any unapproved posts
 			array(
 				'phpbb_posts',
+				0,
+				false,
 				'post', 1, '',
 				array(
 				),
@@ -42,8 +49,11 @@ class phpbb_content_visibility_get_visibility_sql_test extends phpbb_database_te
 					array('post_id' => 2),
 				),
 			),
+			// data set 2: display_unapproved_posts=false, moderator, can see all topics
 			array(
 				'phpbb_topics',
+				0,
+				false,
 				'topic', 1, '',
 				array(
 					array('m_approve', 1, true),
@@ -52,23 +62,74 @@ class phpbb_content_visibility_get_visibility_sql_test extends phpbb_database_te
 					array('topic_id' => 1),
 					array('topic_id' => 2),
 					array('topic_id' => 3),
+					array('topic_id' => 4),
 				),
 			),
+			// data set 3: display_unapproved_posts=false, normal user, cannot see unapproved posts topic
 			array(
 				'phpbb_topics',
+				0,
+				false,
 				'topic', 1, '',
 				array(),
 				array(
 					array('topic_id' => 2),
 				),
 			),
+			// data set 4: display_unapproved_posts=true, guest user, cannot see unapproved posts
+			array(
+				'phpbb_posts',
+				1,
+				true,
+				'post', 1, '',
+				array(
+				),
+				array(
+					array('post_id' => 2),
+				),
+			),
+			// data set 5: display_unapproved_posts=true, guest user, cannot see unapproved posts topic
+			array(
+				'phpbb_topics',
+				1,
+				true,
+				'topic', 1, '',
+				array(),
+				array(
+					array('topic_id' => 2),
+				),
+			),
+			// data set 6: display_unapproved_posts=true, normal user, can see own unapproved posts
+			array(
+				'phpbb_posts',
+				0,
+				true,
+				'post', 1, '',
+				array(),
+				array(
+					array('post_id' => 1),
+					array('post_id' => 2),
+				),
+			),
+			// data set 7: display_unapproved_posts=true, normal user, can see own unapproved posts topic
+			array(
+				'phpbb_topics',
+				0,
+				true,
+				'topic', 1, '',
+				array(),
+				array(
+					array('topic_id' => 1),
+					array('topic_id' => 2),
+				),
+			),
 		);
 	}
 
 	/**
 	* @dataProvider get_visibility_sql_data
 	*/
-	public function test_get_visibility_sql($table, $mode, $forum_id, $table_alias, $permissions, $expected)
+	public function test_get_visibility_sql($table, $user_id, $display_unapproved, $mode, $forum_id, $table_alias, $permissions, $expected)
 	{
 		global $cache, $db, $auth, $phpbb_root_path, $phpEx;
 
@@ -84,15 +145,20 @@ class phpbb_content_visibility_get_visibility_sql_test extends phpbb_database_te
 		$lang_loader = new \phpbb\language\language_file_loader($phpbb_root_path, $phpEx);
 		$lang = new \phpbb\language\language($lang_loader);
 		$user = new \phpbb\user($lang, '\phpbb\datetime');
-		$config = new phpbb\config\config(array());
+		$user->data['user_id'] = $user_id;
+		$config = $this->config = new \phpbb\config\config(array(
+			'display_unapproved_posts'			=> $display_unapproved,
+		));
 		$phpbb_dispatcher = new phpbb_mock_event_dispatcher();
 		$content_visibility = new \phpbb\content_visibility($auth, $config, $phpbb_dispatcher, $db, $user, $phpbb_root_path, $phpEx, FORUMS_TABLE, POSTS_TABLE, TOPICS_TABLE, USERS_TABLE);
 
-		$result = $db->sql_query('SELECT ' . $mode . '_id
+		$sql = 'SELECT ' . $mode . '_id
 			FROM ' . $table . '
 			WHERE ' . $content_visibility->get_visibility_sql($mode, $forum_id, $table_alias) . '
-			ORDER BY ' . $mode . '_id ASC');
+			ORDER BY ' . $mode . '_id ASC';
+		$result = $db->sql_query($sql);
 
 		$this->assertEquals($expected, $db->sql_fetchrowset($result));
+		$db->sql_freeresult($result);
 	}
 }
diff --git a/tests/functional/visibility_unapproved_posts_test.php b/tests/functional/visibility_unapproved_posts_test.php
new file mode 100644
index 0000000000..9f6491d1d8
--- /dev/null
+++ b/tests/functional/visibility_unapproved_posts_test.php
@@ -0,0 +1,356 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+/**
+* @group functional
+*/
+class phpbb_functional_visibility_unapproved_test extends phpbb_functional_test_case
+{
+	protected $data = [];
+
+	public function test_setup_forums()
+	{
+		$this->login();
+		$this->admin_login();
+
+		$crawler = self::request('GET', "adm/index.php?i=acp_forums&mode=manage&sid={$this->sid}");
+		$form = $crawler->selectButton('addforum')->form([
+			'forum_name'	=> 'Unapproved Posts Test #1',
+		]);
+		$crawler = self::submit($form);
+		$form = $crawler->selectButton('update')->form([
+			'forum_perm_from'	=> 2,
+		]);
+		$crawler = self::submit($form);
+
+		// Set flood interval to 0
+		$this->set_flood_interval(0);
+	}
+
+	public function test_create_posts()
+	{
+		$this->login();
+		$this->load_ids([
+			'forums' => [
+				'Unapproved Posts Test #1',
+			],
+		]);
+
+		$this->assert_forum_details($this->data['forums']['Unapproved Posts Test #1'], [
+			'forum_posts_approved'		=> 0,
+			'forum_posts_unapproved'	=> 0,
+			'forum_posts_softdeleted'	=> 0,
+			'forum_topics_approved'		=> 0,
+			'forum_topics_unapproved'	=> 0,
+			'forum_topics_softdeleted'	=> 0,
+			'forum_last_post_id'		=> 0,
+		], 'initial comparison');
+
+		// Test creating topic #1
+		$post = $this->create_topic($this->data['forums']['Unapproved Posts Test #1'], 'Unapproved Posts Test Topic #1', 'This is a test topic posted by the testing framework.');
+		$crawler = self::request('GET', "viewtopic.php?t={$post['topic_id']}&sid={$this->sid}");
+
+		$this->assertContains('Unapproved Posts Test Topic #1', $crawler->filter('h2')->text());
+		$this->data['topics']['Unapproved Posts Test Topic #1'] = (int) $post['topic_id'];
+		$this->data['posts']['Unapproved Posts Test Topic #1'] = (int) $this->get_parameter_from_link($crawler->filter('.post')->selectLink($this->lang('POST', '', ''))->link()->getUri(), 'p');
+
+		$this->assert_forum_details($this->data['forums']['Unapproved Posts Test #1'], [
+			'forum_posts_approved'		=> 1,
+			'forum_posts_unapproved'	=> 0,
+			'forum_posts_softdeleted'	=> 0,
+			'forum_topics_approved'		=> 1,
+			'forum_topics_unapproved'	=> 0,
+			'forum_topics_softdeleted'	=> 0,
+			'forum_last_post_id'		=> $this->data['posts']['Unapproved Posts Test Topic #1'],
+		], 'after creating topic #1');
+
+		$this->logout();
+		$this->create_user('unapproved_posts_test_user#1');
+		$this->add_user_group('NEWLY_REGISTERED', ['unapproved_posts_test_user#1']);
+		$this->login('unapproved_posts_test_user#1');
+
+		// Test creating a reply
+		$post2 = $this->create_post($this->data['forums']['Unapproved Posts Test #1'], $post['topic_id'], 'Re: Unapproved Posts Test Topic #1-#2', 'This is a test post posted by the testing framework.', [], 'POST_STORED_MOD');
+
+		$crawler = self::request('GET', "viewtopic.php?t={$this->data['topics']['Unapproved Posts Test Topic #1']}&sid={$this->sid}");
+		$this->assertNotContains('Re: Unapproved Posts Test Topic #1-#2', $crawler->filter('#page-body')->text());
+
+		$this->assert_forum_details($this->data['forums']['Unapproved Posts Test #1'], [
+			'forum_posts_approved'		=> 1,
+			'forum_posts_unapproved'	=> 1,
+			'forum_posts_softdeleted'	=> 0,
+			'forum_topics_approved'		=> 1,
+			'forum_topics_unapproved'	=> 0,
+			'forum_topics_softdeleted'	=> 0,
+			'forum_last_post_id'		=> $this->data['posts']['Unapproved Posts Test Topic #1'],
+		], 'after replying');
+
+		// Test creating topic #2
+		$post = $this->create_topic($this->data['forums']['Unapproved Posts Test #1'], 'Unapproved Posts Test Topic #2', 'This is a test topic posted by the testing framework.', [], 'POST_STORED_MOD');
+		$crawler = self::request('GET', "viewforum.php?f={$this->data['forums']['Unapproved Posts Test #1']}&sid={$this->sid}");
+
+		$this->assertNotContains('Unapproved Posts Test Topic #2', $crawler->filter('html')->text());
+
+		$this->assert_forum_details($this->data['forums']['Unapproved Posts Test #1'], [
+			'forum_posts_approved'		=> 1,
+			'forum_posts_unapproved'	=> 2,
+			'forum_posts_softdeleted'	=> 0,
+			'forum_topics_approved'		=> 1,
+			'forum_topics_unapproved'	=> 1,
+			'forum_topics_softdeleted'	=> 0,
+			'forum_last_post_id'		=> $this->data['posts']['Unapproved Posts Test Topic #1'],
+		], 'after creating topic #2');
+
+		$this->logout();
+	}
+
+	public function test_view_unapproved_post_disabled()
+	{
+		// user who created post
+		$this->login('unapproved_posts_test_user#1');
+		$this->load_ids([
+			'forums' => [
+				'Unapproved Posts Test #1',
+			],
+			'topics' => [
+				'Unapproved Posts Test Topic #1',
+				'Unapproved Posts Test Topic #2',
+			],
+			'posts' => [
+				'Unapproved Posts Test Topic #1',
+				'Re: Unapproved Posts Test Topic #1-#2',
+				'Unapproved Posts Test Topic #2',
+			],
+		]);
+
+		$this->assert_forum_details($this->data['forums']['Unapproved Posts Test #1'], [
+			'forum_posts_approved'		=> 1,
+			'forum_posts_unapproved'	=> 2,
+			'forum_posts_softdeleted'	=> 0,
+			'forum_topics_approved'		=> 1,
+			'forum_topics_unapproved'	=> 1,
+			'forum_topics_softdeleted'	=> 0,
+			'forum_last_post_id'		=> $this->data['posts']['Unapproved Posts Test Topic #1'],
+		], 'before approving post');
+
+		$this->add_lang('posting');
+		$this->add_lang('viewtopic');
+		$this->add_lang('mcp');
+
+		// should be able to see topic 1 but not unapproved post
+		$crawler = self::request('GET', "viewtopic.php?t={$this->data['topics']['Unapproved Posts Test Topic #1']}&sid={$this->sid}");
+		$this->assertContains('Unapproved Posts Test Topic #1', $crawler->filter('h2')->text());
+		$this->assertNotContains('Re: Unapproved Posts Test Topic #1-#2', $crawler->filter('#page-body')->text());
+		$this->assertNotContains('This post is not visible to other users until it has been approved', $crawler->filter('#page-body')->text());
+
+		// should not be able to see topic 2
+		$crawler = self::request('GET', "viewforum.php?f={$this->data['forums']['Unapproved Posts Test #1']}&sid={$this->sid}");
+		$this->assertNotContains('Unapproved Posts Test Topic #2', $crawler->filter('html')->text());
+		$this->logout();
+
+		// another user
+		$this->create_user('unapproved_posts_test_user#2');
+		$this->login('unapproved_posts_test_user#2');
+
+		$this->add_lang('posting', 'viewtopic', 'mcp');
+
+		// should be able to see topic 1 but not unapproved post
+		$crawler = self::request('GET', "viewtopic.php?t={$this->data['topics']['Unapproved Posts Test Topic #1']}&sid={$this->sid}");
+		$this->assertContains('Unapproved Posts Test Topic #1', $crawler->filter('h2')->text());
+		$this->assertNotContains('Re: Unapproved Posts Test Topic #1-#2', $crawler->filter('#page-body')->text());
+		$this->assertNotContains('This post is not visible to other users until it has been approved', $crawler->filter('#page-body')->text());
+
+		// should not be able to see topic 2
+		$crawler = self::request('GET', "viewforum.php?f={$this->data['forums']['Unapproved Posts Test #1']}&sid={$this->sid}");
+		$this->assertNotContains('Unapproved Posts Test Topic #2', $crawler->filter('html')->text());
+	}
+
+	public function test_view_unapproved_post_enabled()
+	{
+		$this->config_display_unapproved_posts_state(true);
+
+		// user who created post
+		$this->login('unapproved_posts_test_user#1');
+		$this->load_ids([
+			'forums' => [
+				'Unapproved Posts Test #1',
+			],
+			'topics' => [
+				'Unapproved Posts Test Topic #1',
+				'Unapproved Posts Test Topic #2',
+			],
+			'posts' => [
+				'Unapproved Posts Test Topic #1',
+				'Re: Unapproved Posts Test Topic #1-#2',
+				'Unapproved Posts Test Topic #2',
+			],
+		]);
+
+		$this->assert_forum_details($this->data['forums']['Unapproved Posts Test #1'], [
+			'forum_posts_approved'		=> 1,
+			'forum_posts_unapproved'	=> 2,
+			'forum_posts_softdeleted'	=> 0,
+			'forum_topics_approved'		=> 1,
+			'forum_topics_unapproved'	=> 1,
+			'forum_topics_softdeleted'	=> 0,
+			'forum_last_post_id'		=> $this->data['posts']['Unapproved Posts Test Topic #1'],
+		], 'before approving post');
+
+		$this->add_lang('posting');
+		$this->add_lang('viewtopic');
+		$this->add_lang('mcp');
+
+		// should be able to see topic 1 and unapproved post
+		$crawler = self::request('GET', "viewtopic.php?t={$this->data['topics']['Unapproved Posts Test Topic #1']}&sid={$this->sid}");
+		$this->assertContains('Unapproved Posts Test Topic #1', $crawler->filter('h2')->text());
+		$this->assertContains('Re: Unapproved Posts Test Topic #1-#2', $crawler->filter('#page-body')->text());
+		$this->assertContains('This post is not visible to other users until it has been approved', $crawler->filter('#page-body')->text());
+
+		// should be able to see topic 2
+		$crawler = self::request('GET', "viewforum.php?f={$this->data['forums']['Unapproved Posts Test #1']}&sid={$this->sid}");
+		$this->assertContains('Unapproved Posts Test Topic #2', $crawler->filter('html')->text());
+
+		// should be able to see post in topic 2
+		$crawler = self::request('GET', "viewtopic.php?t={$this->data['topics']['Unapproved Posts Test Topic #2']}&sid={$this->sid}");
+		$this->assertContains('Unapproved Posts Test Topic #2', $crawler->filter('#page-body')->text());
+		$this->assertContains('This post is not visible to other users until it has been approved', $crawler->filter('#page-body')->text());
+		$this->logout();
+
+		// another user
+		$this->login('unapproved_posts_test_user#2');
+
+		$this->add_lang('posting');
+		$this->add_lang('viewtopic');
+		$this->add_lang('mcp');
+
+		// should be able to see topic 1 but not unapproved post
+		$crawler = self::request('GET', "viewtopic.php?t={$this->data['topics']['Unapproved Posts Test Topic #1']}&sid={$this->sid}");
+		$this->assertContains('Unapproved Posts Test Topic #1', $crawler->filter('h2')->text());
+		$this->assertNotContains('Re: Unapproved Posts Test Topic #1-#2', $crawler->filter('#page-body')->text());
+		$this->assertNotContains('This post is not visible to other users until it has been approved', $crawler->filter('#page-body')->text());
+
+		// should not be able to see topic 2
+		$crawler = self::request('GET', "viewforum.php?f={$this->data['forums']['Unapproved Posts Test #1']}&sid={$this->sid}");
+		$this->assertNotContains('Unapproved Posts Test Topic #2', $crawler->filter('html')->text());
+		$this->logout();
+	}
+
+	public function test_reset_flood_interval()
+	{
+		$this->login();
+		$this->admin_login();
+
+		// Set flood interval back to 15
+		$this->set_flood_interval(15);
+	}
+
+	protected function assert_forum_details($forum_id, $details, $additional_error_message = '')
+	{
+		$this->db = $this->get_db();
+
+		$sql = 'SELECT ' . implode(', ', array_keys($details)) . '
+			FROM phpbb_forums
+			WHERE forum_id = ' . (int) $forum_id;
+		$result = $this->db->sql_query($sql);
+		$data = $this->db->sql_fetchrow($result);
+		$this->db->sql_freeresult($result);
+
+		$this->assertEquals($details, $data, "Forum {$forum_id} does not match expected {$additional_error_message}");
+	}
+
+	protected function set_flood_interval($flood_interval)
+	{
+		$crawler = self::request('GET', "adm/index.php?sid={$this->sid}&i=acp_board&mode=post");
+
+		$form = $crawler->selectButton('Submit')->form();
+		$values = $form->getValues();
+
+		$values['config[flood_interval]'] = $flood_interval;
+		$form->setValues($values);
+		$crawler = self::submit($form);
+		$this->assertGreaterThan(0, $crawler->filter('.successbox')->count());
+	}
+
+	protected function load_ids($data)
+	{
+		$this->db = $this->get_db();
+
+		if (!empty($data['forums']))
+		{
+			$sql = 'SELECT forum_id, forum_name
+				FROM phpbb_forums
+				WHERE ' . $this->db->sql_in_set('forum_name', $data['forums']);
+			$result = $this->db->sql_query($sql);
+			while ($row = $this->db->sql_fetchrow($result))
+			{
+				if (in_array($row['forum_name'], $data['forums']))
+				{
+					$this->data['forums'][$row['forum_name']] = (int) $row['forum_id'];
+				}
+			}
+			$this->db->sql_freeresult($result);
+		}
+
+		if (!empty($data['topics']))
+		{
+			$sql = 'SELECT *
+				FROM phpbb_topics
+				WHERE ' . $this->db->sql_in_set('topic_title', $data['topics']);
+			$result = $this->db->sql_query($sql);
+			while ($row = $this->db->sql_fetchrow($result))
+			{
+				if (in_array($row['topic_title'], $data['topics']))
+				{
+					$this->data['topics'][$row['topic_title']] = (int) $row['topic_id'];
+				}
+			}
+			$this->db->sql_freeresult($result);
+		}
+
+		if (!empty($data['posts']))
+		{
+			$sql = 'SELECT *
+				FROM phpbb_posts
+				WHERE ' . $this->db->sql_in_set('post_subject', $data['posts']);
+			$result = $this->db->sql_query($sql);
+			while ($row = $this->db->sql_fetchrow($result))
+			{
+				if (in_array($row['post_subject'], $data['posts']))
+				{
+					$this->data['posts'][$row['post_subject']] = (int) $row['post_id'];
+				}
+			}
+			$this->db->sql_freeresult($result);
+		}
+	}
+
+	protected function config_display_unapproved_posts_state($state)
+	{
+		$this->login();
+		$this->admin_login();
+
+		$crawler = self::request('GET', "adm/index.php?sid={$this->sid}&i=acp_board&mode=features");
+
+		$form = $crawler->selectButton('Submit')->form();
+		$values = $form->getValues();
+
+		// Enable display of unapproved posts to posters
+		$values['config[display_unapproved_posts]'] = $state;
+
+		$form->setValues($values);
+
+		$crawler = self::submit($form);
+		self::assertContainsLang('CONFIG_UPDATED', $crawler->filter('.successbox')->text());
+		$this->logout();
+	}
+}