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	        else10	        {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]                    else16	[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]                else22	[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	        else54	        {55	            $ftoH=$toH;56	            $ftoW=$ftoH*($srcW/$srcH);57	        }