织梦图集上传图片小于设定尺寸缩略图生成失败的解决办法

织梦图集中，上传的图片像素宽高小于系统设置定的这个尺寸：

较小的这些图片就会无法生成缩略图，导致图集在网页上缩略图显示X叉号，这应该是织梦DEDEcms的一个历史遗漏bug，可用下面方法修复。

/include/helpers/，这个文件中搜索，下面的代码：

01	if($srcW<=$toW && $srcH<=$toH ) return TRUE;
02	        $toWH=$toW/$toH;
03	        $srcWH=$srcW/$srcH;
04	        if($toWH<=$srcWH)
05	        {
06	            $ftoW=$toW;
07	            $ftoH=$ftoW*($srcH/$srcW);
08	        }
09	        else
10	        {
11	            $ftoH=$toH;
12	            $ftoW=$ftoH*($srcW/$srcH);
13	        }

然后用下面的大片代码替换：

01	$ftoW=$toH;
02	[size=; font-size: inherit,inherit]                $ftoH=$toH;
03	        ///
04	[size=; font-size: inherit,inherit]        if( $srcH<=$toH &&  $srcW<=$toW )
05	[size=; font-size: inherit,inherit]            {
06	[size=; font-size: inherit,inherit]                $ftoW=$srcW;
07	[size=; font-size: inherit,inherit]                $ftoH=$srcH;
08	[size=; font-size: inherit,inherit]                if(function_exists("imagecreatetruecolor"))
09	[size=; font-size: inherit,inherit]                {
10	[size=; font-size: inherit,inherit]                    @$ni = imagecreatetruecolor($ftoW,$ftoH);
11	[size=; font-size: inherit,inherit]                    if($ni)
12	[size=; font-size: inherit,inherit]                    {
13	[size=; font-size: inherit,inherit]                    imagecopyresampled($ni,$im,0,0,0,0,$ftoW,$ftoH,$srcW,$srcH);
14	[size=; font-size: inherit,inherit]                    }
15	[size=; font-size: inherit,inherit]                    else
16	[size=; font-size: inherit,inherit]                    {
17	[size=; font-size: inherit,inherit]                    $ni=imagecreate($ftoW,$ftoH);
18	[size=; font-size: inherit,inherit]                    imagecopyresized($ni,$im,0,0,0,0,$ftoW,$ftoH,$srcW,$srcH);
19	[size=; font-size: inherit,inherit]                    }
20	[size=; font-size: inherit,inherit]                    }
21	[size=; font-size: inherit,inherit]                else
22	[size=; font-size: inherit,inherit]                {
23	[size=; font-size: inherit,inherit]                    $ni=imagecreate($ftoW,$ftoH);
24	[size=; font-size: inherit,inherit]                    imagecopyresized($ni,$im,0,0,0,0,$ftoW,$ftoH,$srcW,$srcH);
25	[size=; font-size: inherit,inherit]                }
26	[size=; font-size: inherit,inherit]                switch ($srcInfo[2])
27	[size=; font-size: inherit,inherit]                {
28	[size=; font-size: inherit,inherit]                    case 1:
29	[size=; font-size: inherit,inherit]                    imagegif($ni,$toFile);
30	[size=; font-size: inherit,inherit]                    break;
31	[size=; font-size: inherit,inherit]                    case 2:
32	[size=; font-size: inherit,inherit]                    imagejpeg($ni,$toFile,100);
33	[size=; font-size: inherit,inherit]                    break;
34	[size=; font-size: inherit,inherit]                    case 3:
35	[size=; font-size: inherit,inherit]                    imagepng($ni,$toFile);
36	[size=; font-size: inherit,inherit]                    break;
37	[size=; font-size: inherit,inherit]                    case 6:
38	[size=; font-size: inherit,inherit]                    imagebmp($ni,$toFile);
39	[size=; font-size: inherit,inherit]                    break;
40	[size=; font-size: inherit,inherit]                    default:
41	[size=; font-size: inherit,inherit]                    return false;
42	[size=; font-size: inherit,inherit]                }
43	[size=; font-size: inherit,inherit]                imagedestroy($ni);
44	[size=; font-size: inherit,inherit]            } ///
45	
46	        $toWH=$toW/$toH;
47	        $srcWH=$srcW/$srcH;
48	        if($toWH<=$srcWH)
49	        {
50	            $ftoW=$toW;
51	            $ftoH=$ftoW*($srcH/$srcW);
52	        }
53	        else
54	        {
55	            $ftoH=$toH;
56	            $ftoW=$ftoH*($srcW/$srcH);
57	        }

这样织梦上传的图，就不会显示x号了。

常见问题FAQ