From 8f21a055ade6c40b160e1366ffd41f781d79621a Mon Sep 17 00:00:00 2001
From: 3D-I <eataly3d@gmail.com>
Date: Sat, 27 Feb 2021 19:53:49 +0100
Subject: [PATCH 1/4] [ticket/16712] Implement thumbnails for WEBP images in
 attachments

PHPBB3-16712
---
 phpBB/includes/functions_posting.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/phpBB/includes/functions_posting.php b/phpBB/includes/functions_posting.php
index dd6313f666..a3b743777f 100644
--- a/phpBB/includes/functions_posting.php
+++ b/phpBB/includes/functions_posting.php
@@ -659,6 +659,10 @@ function create_thumbnail($source, $destination, $mimetype)
 				case IMG_WBMP:
 					$image = @imagecreatefromwbmp($source);
 				break;
+
+				case IMG_WEBP:
+					$image = @imagecreatefromwebp($source);
+				break;
 			}
 
 			if (empty($image))
@@ -710,6 +714,10 @@ function create_thumbnail($source, $destination, $mimetype)
 				case IMG_WBMP:
 					imagewbmp($new_image, $destination);
 				break;
+
+				case IMG_WEBP:
+					imagewebp($new_image, $destination);
+				break;
 			}
 
 			imagedestroy($new_image);

From 84453ed957126f60f2b82ad60fc1f331ee068632 Mon Sep 17 00:00:00 2001
From: 3D-I <eataly3d@gmail.com>
Date: Sat, 27 Feb 2021 20:04:41 +0100
Subject: [PATCH 2/4] [ticket/16712] Implement thumbnails for WEBP images in
 attachments

PHPBB3-16712
---
 phpBB/includes/functions_posting.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/phpBB/includes/functions_posting.php b/phpBB/includes/functions_posting.php
index a3b743777f..9772523c53 100644
--- a/phpBB/includes/functions_posting.php
+++ b/phpBB/includes/functions_posting.php
@@ -542,6 +542,11 @@ function get_supported_image_types($type = false)
 				case IMAGETYPE_WBMP:
 					$new_type = ($format & IMG_WBMP) ? IMG_WBMP : false;
 				break;
+
+				// WEBP
+				case IMAGETYPE_WEBP:
+					$new_type = ($format & IMG_WEBP) ? IMG_WEBP : false;
+				break;
 			}
 		}
 		else

From 374a3a200507fdaa4ac94f7c719f3550ab8e33b2 Mon Sep 17 00:00:00 2001
From: 3D-I <eataly3d@gmail.com>
Date: Sat, 27 Feb 2021 21:59:48 +0100
Subject: [PATCH 3/4] [ticket/16712] Implement thumbnails for WEBP images in
 attachments

PHPBB3-16712
---
 phpBB/includes/functions_posting.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/phpBB/includes/functions_posting.php b/phpBB/includes/functions_posting.php
index 9772523c53..c4e917e1c0 100644
--- a/phpBB/includes/functions_posting.php
+++ b/phpBB/includes/functions_posting.php
@@ -552,7 +552,7 @@ function get_supported_image_types($type = false)
 		else
 		{
 			$new_type = array();
-			$go_through_types = array(IMG_GIF, IMG_JPG, IMG_PNG, IMG_WBMP);
+			$go_through_types = array(IMG_GIF, IMG_JPG, IMG_PNG, IMG_WBMP, IMG_WEBP);
 
 			foreach ($go_through_types as $check_type)
 			{

From b06746460e276b57d65d2fd807e17f1f25731e22 Mon Sep 17 00:00:00 2001
From: 3D-I <eataly3d@gmail.com>
Date: Sat, 27 Feb 2021 22:09:17 +0100
Subject: [PATCH 4/4] [ticket/16712] Implement thumbnails for WEBP images in
 attachments

Use short array syntax

PHPBB3-16712
---
 phpBB/includes/functions_posting.php | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/phpBB/includes/functions_posting.php b/phpBB/includes/functions_posting.php
index c4e917e1c0..43492f5eee 100644
--- a/phpBB/includes/functions_posting.php
+++ b/phpBB/includes/functions_posting.php
@@ -551,8 +551,8 @@ function get_supported_image_types($type = false)
 		}
 		else
 		{
-			$new_type = array();
-			$go_through_types = array(IMG_GIF, IMG_JPG, IMG_PNG, IMG_WBMP, IMG_WEBP);
+			$new_type = [];
+			$go_through_types = [IMG_GIF, IMG_JPG, IMG_PNG, IMG_WBMP, IMG_WEBP];
 
 			foreach ($go_through_types as $check_type)
 			{
@@ -563,14 +563,14 @@ function get_supported_image_types($type = false)
 			}
 		}
 
-		return array(
+		return [
 			'gd'		=> ($new_type) ? true : false,
 			'format'	=> $new_type,
 			'version'	=> (function_exists('imagecreatetruecolor')) ? 2 : 1
-		);
+		];
 	}
 
-	return array('gd' => false);
+	return ['gd' => false];
 }
 
 /**