From 3d2009dc4c0fc677e62b10342dc375604ce6859b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B0=8F=E8=83=A1?=
 <140248955+xiaohu2002@users.noreply.github.com>
Date: Sun, 27 Oct 2024 15:32:12 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96PNG=E6=A0=BC=E5=BC=8F?=
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---
 core/class/io/io_dzz.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/core/class/io/io_dzz.php b/core/class/io/io_dzz.php
index 67e5c9a0..55b786f5 100644
--- a/core/class/io/io_dzz.php
+++ b/core/class/io/io_dzz.php
@@ -309,7 +309,12 @@ public function getThumb($path, $width = 0, $height = 0, $original = false, $ret
         $quality = 80;
         $imgcachePath = 'imgcache/';
         $cachepath = str_replace('//', '/', str_replace(':', '/', $data['attachment'] ? $data['attachment'] : $data['path']));
-        $target = $imgcachePath . ($cachepath) . '.' . $width . '_' . $height . '_'.$thumbtype.'.jpeg';
+        if ($data['ext'] == 'png' || $data['ext'] == 'PNG') {
+            $targetext = '.png';
+        } else {
+            $targetext = '.jpeg';
+        }
+        $target = $imgcachePath . ($cachepath) . '.' . $width . '_' . $height . '_'.$thumbtype.$targetext;
         if (!$original && $enable_cache && @getimagesize($_G['setting']['attachdir'] . './' . $target)) {
             if ($returnurl) return $_G['setting']['attachurl'] . '/' . $target;
             $file = $_G['setting']['attachdir'] . './' . $target;