php如何删除目录及目录下的所有文件的代码实例

//删除目录及文件
/*
 *   @param  deletefile //删除文件夹及里面的所有数据
 *   @param  dirName  // 基于 ./Public/Uploads/ 下面的路径
 *   @param  is_dir  //判断是否是目录
 *   @param  opendir  // 打开文件夹
 *   @param  readdir // 读取文件夹
 */
 function deletefile($dirName){
    $dir=$dirName;
    if(is_dir(iconv('utf-8','gb2312',$dir))==true){
        if($handle=opendir(iconv('utf-8','gb2312',$dir))){//打开文件内容
            while(false!==($files=readdir($handle))){//读取文件内容
                $files=iconv('gb2312','utf-8',$files);
                if($files!="." && $files!=".."){
                    $files=iconv('utf-8','utf-8',$files);//字符转义
                    $dir=iconv('utf-8','utf-8',$dir);
                    $new_dir=$dir."/".$files;
                    if(is_dir(iconv('utf-8','gb2312',$new_dir)))
                    {
                       deletefile($new_dir);//递归调用
                    }
                    else
                    {
                        //删除pdf 里面的转换文件
                        $zip_type = substr(strrchr(iconv('utf-8','gb2312',$files), '.'), 1);
                        if($zip_type=='xls'|| $zip_type=='xlsx' || $zip_type=='docx' || $zip_type=='doc'){
                            $filename_file =$files;
                            $houzhui_file = substr(strrchr($filename_file, '.'), 1);
                            $wei_file=mb_strlen($houzhui_file,'utf-8')+1;//获取后缀名的长度
                            $zong_file=mb_strlen($filename_file,'utf-8');//获取总的长度
                            $filenams_file=mb_substr($filename_file,0,$zong_file-$wei_file,'utf-8');
                            $pdfname_file=$filenams_file;//截取文件名前缀
                            unlink(iconv('utf-8','gb2312','./Public/Uploads/pdf/'.$pdfname_file.'.pdf'));
                        }
                        unlink(iconv('utf-8','gb2312',$new_dir));

                    }
                }
            }
            closeDir($handle);
            if(rmdir(iconv('utf-8','GBK',$dir))){
                $value['file']='成功删除目录';
                $value['success']='success';
                //echo "成功删除目录";
            }
        }else{
            // echo '打开不了目录';
            $value['file']='打开不了目录';
            $value['fail']='fail';
        }
    }else{
        if(is_file(iconv('utf-8','gb2312',$dir))==false){
            //echo '没有找到目录';
            $value['file']='没有找到目录';
            $value['fail']='fail';
        }
    }
    return $value;
}