如何解決PHPCMS縮略圖不清楚的問題

本篇文章為大家展示了如何解決PHPCMS縮略圖不清楚的問題，代碼簡明扼要并且容易理解，絕對能使你眼前一亮，通過這篇文章的詳細介紹希望你能有所收獲。

首先在phpcms下面的libs中找到classes目錄并打開；然后找到“image.class.php”這個文件并打開；最后搜索到調用“$imagefun()”函數的地方并傳第三個參數為90即可。

搜索到下這個函數

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);  //  指派一個綠色  
                        imagecolortransparent($thumbimg, $background_color);  //  設置為透明色，若注釋掉該行則輸出綠色的圖 
                }
                if($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);

改為

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);

上述內容就是如何解決PHPCMS縮略圖不清楚的問題，你們學到知識或技能了嗎？如果還想學到更多技能或者豐富自己的知識儲備，歡迎關注億速云行業資訊頻道。