如何检查用户已使用php查看了多少视频流 [英] how to check how much of a video stream has been seen by user with php

问题描述

我正在一个项目中向用户显示视频广告，并且60秒后用户可以看到一个链接. 我的老板想确保用户观看所有60秒.现在我想知道是否有任何方法可以检查php看到了多少视频流? 要将视频呈现为流，我使用了以下代码:

I'm working on a project which shows video advertisement to user and after 60 second users can see a link. My boss wants to be sure users watch all of 60 second. Now I want to know is there any way to check how much of a video stream has been seen by php ? To present video as stream I've used this code :

http://codesamplez.com/programming/php-html5-video-流式教学

class VideoStream
{
    private $path = "";
    private $stream = "";
    private $buffer = 102400;
    private $start  = -1;
    private $end    = -1;
    private $size   = 0;

    function __construct($filePath) 
    {
        $this->path = $filePath;
    }

    /**
     * Open stream
     */
    private function open()
    {
        if (!($this->stream = fopen($this->path, 'rb'))) {
            die('Could not open stream for reading');
        }

    }

    /**
     * Set proper header to serve the video content
     */
    private function setHeader()
    {
        ob_get_clean();
        header("Content-Type: video/mp4");
        header("Cache-Control: max-age=2592000, public");
        header("Expires: ".gmdate('D, d M Y H:i:s', time()+2592000) . ' GMT');
        header("Last-Modified: ".gmdate('D, d M Y H:i:s', @filemtime($this->path)) . ' GMT' );
        $this->start = 0;
        $this->size  = filesize($this->path);
        $this->end   = $this->size - 1;
        header("Accept-Ranges: 0-".$this->end);

        if (isset($_SERVER['HTTP_RANGE'])) {

            $c_start = $this->start;
            $c_end = $this->end;

            list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
            if (strpos($range, ',') !== false) {
                header('HTTP/1.1 416 Requested Range Not Satisfiable');
                header("Content-Range: bytes $this->start-$this->end/$this->size");
                exit;
            }
            if ($range == '-') {
                $c_start = $this->size - substr($range, 1);
            }else{
                $range = explode('-', $range);
                $c_start = $range[0];

                $c_end = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $c_end;
            }
            $c_end = ($c_end > $this->end) ? $this->end : $c_end;
            if ($c_start > $c_end || $c_start > $this->size - 1 || $c_end >= $this->size) {
                header('HTTP/1.1 416 Requested Range Not Satisfiable');
                header("Content-Range: bytes $this->start-$this->end/$this->size");
                exit;
            }
            $this->start = $c_start;
            $this->end = $c_end;
            $length = $this->end - $this->start + 1;
            fseek($this->stream, $this->start);
            header('HTTP/1.1 206 Partial Content');
            header("Content-Length: ".$length);
            header("Content-Range: bytes $this->start-$this->end/".$this->size);
        }
        else
        {
            header("Content-Length: ".$this->size);
        }  

    }

    /**
     * close curretly opened stream
     */
    private function end()
    {
        fclose($this->stream);
        exit;
    }

    /**
     * perform the streaming of calculated range
     */
    private function stream()
    {
        $i = $this->start;
        set_time_limit(0);
        while(!feof($this->stream) && $i <= $this->end) {
            $bytesToRead = $this->buffer;
            if(($i+$bytesToRead) > $this->end) {
                $bytesToRead = $this->end - $i + 1;
            }
            $data = fread($this->stream, $bytesToRead);
            echo $data;
            flush();
            $i += $bytesToRead;
        }
    }

    /**
     * Start streaming video content
     */
    function start()
    {
        $this->open();
        $this->setHeader();
        $this->stream();
        $this->end();
    }
}

$stream = new VideoStream($filePath);
$stream->start();

谢谢.

推荐答案

这只能在Java脚本的客户端完成.视频开始播放时，您将需要启动计时器.检查视频播放器API，您将需要找到事件API，以便在视频启动时对事件执行代码. 对于广告，您将需要在CSS的帮助下在视频屏幕上重叠您的广告容器. 然后在函数

This can only be done at client side in java script. You will need to start timer when video starts to playing. Check the Video player API you will need to find event API to execute code on event when video starts. For the Advertisement, You will need to overlap your ad container on video screen with the help of css. Then execute that code in the function

 setTimeout(function(){ 
 //Show your ad container here  
 }, 60000);
 //60,000 is equal to 60 seconds

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