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

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	 }

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	 }