tp5 base64 图片上传

 /**
     * 保存图片
     */
    public function uploads($value='')
    {

        // $file = base64_decode(request()->file('image'));//图片
        $param = input('param.');

        $up_dir = ROOT_PATH . 'public' . DS . 'uploads/';//存放在当前目录的upload文件夹下
        $base64_img = trim($param['image']);
        if(preg_match('/^(data:\s*image\/(\w+);base64,)/', $base64_img, $result)){
            $type = $result[2];
            if(in_array($type,array('pjpeg','jpeg','jpg','gif','bmp','png'))){
                $new_file = $up_dir.time().'.'.$type;
                if(file_put_contents($new_file, base64_decode(str_replace($result[1], '', $base64_img)))){
                    $img_path = str_replace('../../..', '', $new_file);
                    return  $img_path;
                }else{
                    return '图片上传失败';
                }
            }else{
                //文件类型错误
                return '图片上传类型错误';
            }
        }

    }