核桃说笔记2

php上传头像修改上传头像操作
function editimg() {
        /*echo "<pre>";
        print_r( $_FILES);die;*/
        $navtitle = "修改个人头像";
        if (isset ( $_FILES ["userimage"] )) {
            $uid = intval ( $this->uri->segment ( 3 ) );
            
            $avatardir = "/data/avatar/";
            $extname = extname ( $_FILES ["userimage"] ["name"] );
            if (! isimage ( $extname ))
                $this->message ( "图片扩展名不正确!", 'user/editimg' );
            $upload_tmp_file = FCPATH . 'data/tmp/user_avatar_' . $uid . '.' . $extname;
            $uid = abs ( $uid );
            $uid = sprintf ( "%09d", $uid );
            $dir1 = $avatardir . substr ( $uid, 0, 3 );
            $dir2 = $dir1 . '/' . substr ( $uid, 3, 2 );
            $dir3 = $dir2 . '/' . substr ( $uid, 5, 2 );
            (! is_dir ( FCPATH . $dir1 )) && forcemkdir ( FCPATH . $dir1 );
            (! is_dir ( FCPATH . $dir2 )) && forcemkdir ( FCPATH . $dir2 );
            (! is_dir ( FCPATH . $dir3 )) && forcemkdir ( FCPATH . $dir3 );
            $smallimg = $dir3 . "/small_" . $uid . '.' . $extname;
            if (move_uploaded_file ( $_FILES ["userimage"] ["tmp_name"], $upload_tmp_file )) {
                $avatar_dir = glob ( FCPATH . $dir3 . "/small_{$uid}.*" );
                foreach ( $avatar_dir as $imgfile ) {
                    if (strtolower ( $extname ) != extname ( $imgfile ))
                        unlink ( $imgfile );
                }
                image_resize ( $upload_tmp_file, FCPATH . $smallimg, 85, 85, 1 );
                $this->message ( '修改头像成功', 'user' );
            }
        } else {
            if ($this->setting ["ucenter_open"]) {
                $this->load->model ( 'ucenter_model' );
                $imgstr = $this->ucenter_model->set_avatar ( $this->user ['uid'] );
            }
        }
        
        include template ( "editimg" );
    }

未完待续。。。。。。。。。