### [PHPCMS如何解决缩略图不清楚](https://www.prosaas.cn/article/5221)

**Published:** 2020-05-20T06:08:21

**Author:** 5201314

**Excerpt:** PHPCMS如何解决缩略图不清楚首先在phpcms下面的libs中找到classes目录并打开；然后找到“im…

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**PHPCMS如何解决缩略图不清楚**

首先在phpcms下面的libs中找到classes目录并打开；然后找到“image.class.php”这个文件并打开；最后搜索到调用“$imagefun()”函数的地方并传第三个参数为90即可。

搜索到下这个函数

function thumb($image, $filename = '', $maxwidth = 200, $maxheight = 200, $suffix='', $autocut = 0, $ftp = 0) {
        if(!$this->thumb\_enable || !$this->check($image)) return false;
        $info  = image::info($image);
        if($info === false) return false;
                $srcwidth  = $info\['width'\];
                $srcheight = $info\['height'\];
                $pathinfo = pathinfo($image);
                $type =  $pathinfo\['extension'\];
                if(!$type) $type = $info\['type'\];
                $type = strtolower($type);
                unset($info);

                $creat\_arr = $this->getpercent($srcwidth,$srcheight,$maxwidth,$maxheight);
                $createwidth = $width = $creat\_arr\['w'\];
                $createheight = $height = $creat\_arr\['h'\];

                $psrc\_x = $psrc\_y = 0;
                if($autocut && $maxwidth > 0 && $maxheight > 0) {
                        if($maxwidth/$maxheight<$srcwidth/$srcheight && $maxheight>=$height) {
                                $width = $maxheight/$height\*$width;
                                $height = $maxheight;
                        }elseif($maxwidth/$maxheight>$srcwidth/$srcheight && $maxwidth>=$width) {
                                $height = $maxwidth/$width\*$height;
                                $width = $maxwidth;
                        }
                        $createwidth = $maxwidth;
                        $createheight = $maxheight;
                }
                $createfun = 'imagecreatefrom'.($type=='jpg' ? 'jpeg' : $type);
                $srcimg = $createfun($image);
                if($type != 'gif' && function\_exists('imagecreatetruecolor'))
                        $thumbimg = imagecreatetruecolor($createwidth, $createheight); 
                else
                        $thumbimg = imagecreate($width, $height); 

                if(function\_exists('imagecopyresampled'))
                        imagecopyresampled($thumbimg, $srcimg, 0, 0, $psrc\_x, $psrc\_y, $width, $height, $srcwidth, $srcheight); 
                else
                        imagecopyresized($thumbimg, $srcimg, 0, 0, $psrc\_x, $psrc\_y, $width, $height,  $srcwidth, $srcheight); 
                if($type=='gif' || $type=='png') {
                        $background\_color  =  imagecolorallocate($thumbimg,  0, 255, 0);  //  指派一个绿色  
                        imagecolortransparent($thumbimg, $background\_color);  //  设置为透明色，若注释掉该行则输出绿色的图 
                }
                if($type=='jpg' || $type=='jpeg') imageinterlace($thumbimg, $this->interlace);
                $imagefun = 'image'.($type=='jpg' ? 'jpeg' : $type);
                if(empty($filename)) $filename  = substr($image, 0, strrpos($image, '.')).$suffix.'.'.$type;
                $imagefun($thumbimg, $filename);
                imagedestroy($thumbimg);
                imagedestroy($srcimg);
                if($ftp) {
                        @unlink($image);
                }
                return $filename;
    }

然后找到

if($type=='jpg' || $type=='jpeg') imageinterlace($thumbimg, $this->interlace);
$imagefun = 'image'.($type=='jpg' ? 'jpeg' : $type);
if(empty($filename)) $filename  = substr($image, 0, strrpos($image, '.')).$suffix.'.'.$type;
$imagefun($thumbimg, $filename);
imagedestroy($thumbimg);
imagedestroy($srcimg);

改为

if($type=='jpg' || $type=='jpeg') imageinterlace($thumbimg, $this->interlace);
$imagefun = 'image'.($type=='jpg' ? 'jpeg' : $type);
if(empty($filename)) $filename  = substr($image, 0, strrpos($image, '.')).$suffix.'.'.$type;
$imagefun($thumbimg, $filename, 90);
imagedestroy($thumbimg);
imagedestroy($srcimg);

即可解决问题

推荐教程：《PHP教程》

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**Tags:** class, php, PHPCMS

**Categories:** PHPCMS

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