织梦DedeCms5.7缩略图变形解决方法

1. 修改 image.helper.php 文件
   • 找到以下代码：

     $srcW = ImageSX($im);
     $srcH = ImageSY($im);
     if($srcW <= $toW && $srcH <= $toH) return TRUE;
     $toWH = $toW / $toH;
     $srcWH = $srcW / $srcH;
     if($toWH <= $srcWH) {
         $ftoW = $toW;
         $ftoH = $ftoW * ($srcH / $srcW);
     } else {
         $ftoH = $toH;
         $ftoW = $ftoH * ($srcW / $srcH);
     }

   • 修改为：

     $srcW = ImageSX($im);
     $srcH = ImageSY($im);
     if($srcW <= $toW && $srcH <= $toH) return TRUE;
     $toWH = $toW / $toH;
     $srcWH = $srcW / $srcH;
     $ftoH = $toH;
     $ftoW = $toW;
     if ($toWH <= $srcWH) {
         $src_Y = 0;
         $src_X = ($srcW - $srcH * $toWH) / 2;
         $srcW = $srcH * $toWH;
     } else {
         $src_X = 0;
         $src_Y = ($srcH - $srcW / $toWH) / 2;
         $srcH = $srcW / $toWH;
     }