PHP代码实现微视去水印

前言

1、一直在寻找微视去水印的方法，PHP的要不然过时了，要不然就是java的，或者是Python的。

2、更过分的是有人提供api收费接口打着，开源源码的旗号。

3、这里我就提供纯粹的源码思路，怎么啦！怎么啦

实现思路

1、参考博客：快手去水印解析获取源标题、作者、头像、封面图以及源视频下载地址

页面分析

1、拿到一个快手分享页面 http://kphbeijing.m.chenzhongtech.com/s/ARmv5BoW

然后我们获取这个短视频的文案标题、视频封面、视频地址

获取数据

       $headers = [
            'Connection' => 'keep-alive',
            'User-Agent'=>'Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Mobile Safari/537.36'
        ];
        $client = new Client(['headers'=>$headers]);

        //允许重定向获取html
        $res = $client->request('GET', $url,['allow_redirects' => true]);
        $html = (string)$res->getBody();


        $Query = QueryList::getInstance();
        $json = $Query->html($html)->find('div[id=hide-pagedata]')->attr('data-pagedata');
        $video_data = json_decode($json,true);

获取视频详细信息

     //获取图片id
        $photoId = $video_data['photoId'];
        $param = "client_key=56c3713c&photoIds=".$photoId;

        //计算sign
        $replace = str_replace("&", "",$param).'23caab00356c';
        $sig =md5($replace);

        $queryUrl = 'http://api.gifshow.com/rest/n/photo/info?'.$param."&sig=".$sig;

        //获取url地址之后不能让他重定向
        $res = $client->request('GET', $queryUrl,['allow_redirects' => false]);
        $body = (string)$res->getBody();
        $result = json_decode($body,true);

• 上面的代码java版本的解释一下，下面 new String(new byte[]{50, 51, 99, 97, 97, 98, 48, 48, 51, 53, 54, 99})明显是一个固定的字符串java运行结果23caab00356c。然后是SecureUtil.md5().digestHex(replace)这句明显就是SecureUtil.md5(replace)也就是phper看得懂的MD5加密：

 String replace = StrUtil.replace(param, "&", "") + new String(new byte[]{50, 51, 99, 97, 97, 98, 48, 48, 51, 53, 54, 99});
        String sig = SecureUtil.md5().digestHex(replace);

视频封面、视频地址获取

       $video_data = $result['photos'][0];
        $data['video_src']= $video_data['main_mv_url'];
        $data['video_cover'] = $video_data['thumbnail_url'];

文案标题获取

  $video_title = $video_data['caption'];
        $title =  explode('@',$video_title);
        for ($i=0;$i<count($title);$i++){
            $video_title = str_replace('@'.$title[$i],"",$video_title);
        }

        $title =  explode('#',$video_title);
        for ($i=0;$i<count($title);$i++){
            $video_title = str_replace('#'.$title[$i],"",$video_title);
        }

        $data['video_title'] = $video_title;

最后代码总结

  public function kuaiShou($url){
        $headers = [
            'Connection' => 'keep-alive',
            'User-Agent'=>'Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Mobile Safari/537.36'
        ];
        $client = new Client(['headers'=>$headers]);

        //允许重定向获取html
        $res = $client->request('GET', $url,['allow_redirects' => true]);
        $html = (string)$res->getBody();


        $Query = QueryList::getInstance();
        $json = $Query->html($html)->find('div[id=hide-pagedata]')->attr('data-pagedata');
        $video_data = json_decode($json,true);

        //获取图片id
        $photoId = $video_data['photoId'];
        $param = "client_key=56c3713c&photoIds=".$photoId;

        //计算sign
        $replace = str_replace("&", "",$param).'23caab00356c';
        $sig =md5($replace);

        $queryUrl = 'http://api.gifshow.com/rest/n/photo/info?'.$param."&sig=".$sig;

        //获取url地址之后不能让他重定向
        $res = $client->request('GET', $queryUrl,['allow_redirects' => false]);
        $body = (string)$res->getBody();
        $result = json_decode($body,true);

        //获取到视频相关数据
        $video_data = $result['photos'][0];
        $data['video_src']= $video_data['main_mv_url'];
        $data['video_cover'] = $video_data['thumbnail_url'];

        //获取文案标题
        $video_title = $video_data['caption'];
        $title =  explode('@',$video_title);
        for ($i=0;$i<count($title);$i++){
            $video_title = str_replace('@'.$title[$i],"",$video_title);
        }

        $title =  explode('#',$video_title);
        for ($i=0;$i<count($title);$i++){
            $video_title = str_replace('#'.$title[$i],"",$video_title);
        }

        $data['video_title'] = $video_title;
        return $data;
    }