php批量压缩指定目录的图片,优点-比工具快好多陪。

访问路径或者api接口调用
public function index(){
       $dir = 'uploads';//指定本地目录
       $namefis = [];
       $username = my_dir($dir);//遍历后目录结果,这是一个多维数组
       foreach ($username as $k => $v) {
           foreach ($v as $k1 => $v1) {
                   $namefis[] = 'uploads/' . $k . '/' . $v1;
//                    compressedImage('uploads/' . $k . '/' . $v1, 'uploads/' . $k . '/' . $v1,60);
           }
       }
       dump($namefis);//查看输出的是不是图片路径。是的话,compressedImage,方法。压缩到60的质量,压缩之前,记得备份下,不然压缩的太狠,就没原图了。
//        return $this->fetch();
   }

dump 结果查看uploads目录



![](https://img2020.cnblogs.com/blog/735218/202009/735218-20200925000520152-1535406742.png)

两个经典函数
function my_dir($dir) {
   $files = array();
   if(@$handle = opendir($dir)) { //注意这里要加一个@,不然会有warning错误提示:)
       while(($file = readdir($handle)) !== false) {
           if($file != ".." && $file != ".") { //排除根目录;
               if(is_dir($dir."/".$file)) { //如果是子文件夹,就进行递归
                   $files[$file] = my_dir($dir."/".$file);
               } else { //不然就将文件的名字存入数组;
                   $files[] = $file;
               }

           }
       }
       closedir($handle);
       return $files;
   }
}

function compressedImage($imgsrc, $imgdst,$per=60)
{
   list($width, $height, $type) = getimagesize($imgsrc);
   $new_width = $width;//压缩后的图片宽
   $new_height = $height;//压缩后的图片高
   switch ($type) {
       case 1:
           $giftype = check_gifcartoon($imgsrc);
           if ($giftype) {
               header('Content-Type:image/gif');
               $image_wp = imagecreatetruecolor($new_width, $new_height);
               $image = imagecreatefromgif($imgsrc);
               imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);           //90代表的是质量、压缩图片容量大小
               imagejpeg($image_wp,$imgdst,$per);
               imagedestroy($image_wp);
               imagedestroy($image);
           }
           break;
       case 2:
           header('Content-Type:image/jpeg');
           $image_wp = imagecreatetruecolor($new_width, $new_height);
           $image = imagecreatefromjpeg($imgsrc);
           imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);         //90代表的是质量、压缩图片容量大小
           imagejpeg($image_wp, $imgdst, $per);
           imagedestroy($image_wp);
           imagedestroy($image);
           break;
       case 3:
           header('Content-Type:image/png');
           $image_wp = imagecreatetruecolor($new_width, $new_height);
           $image = imagecreatefrompng($imgsrc);
           imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);         //90代表的是质量、压缩图片容量大小
           imagejpeg($image_wp, $imgdst, $per);
           imagedestroy($image_wp);
           imagedestroy($image);
           break;
   }
}
posted @ 2020-09-25 00:09  china/xin  阅读(176)  评论(0编辑  收藏  举报