About PHP code to get video duration

This article introduces you to the relevant knowledge of php to obtain video duration through example code. It is very good and has certain reference value. Friends who need it can refer to it

The specific code is as follows:

/*
* 获得视频文件的缩略图和视频长度
* @date 2018-05-16
* @copyright
*/
//获得视频文件的总长度时间和创建时间 根据视频长度判断是否失效
public function getTime($url)
{
  //获取视频重定向后的链接
  $location = locationUrl($url);
  //获取视频Content-Length
  $responseHead = get_data($location);
  $list1 = explode("Content-Length: ", $responseHead);
  $list2 = explode("Connection", $list1[1]);
  $list = explode("x", $list2[0]);
  return $list[0];
}
//获取视频重定向后的链接
function locationUrl($url){
  $url_parts = @parse_url($url);
  if (!$url_parts) return false;
  if (!isset($url_parts['host'])) return false;
  if (!isset($url_parts['path'])) $url_parts['path'] = '/';
  $sock = fsockopen($url_parts['host'], (isset($url_parts['port']) ? (int)$url_parts['port'] : '80'), $errno, $errstr, 30);
  if (!$sock) return false;
  $request = "HEAD " . $url_parts['path'] . (isset($url_parts['query']) ? '?'.$url_parts['query'] : '') . " HTTP/1.1\r\n";
  $request .= 'Host: ' . $url_parts['host'] . "\r\n";
  $request .= "Connection: Close\r\n\r\n";
  fwrite($sock, $request);
  $response = '';
  while(!feof($sock)) {
    $response .= fread($sock, 8192);
  }
  fclose($sock);
  if (preg_match('/^Location: (.+?)$/m', $response, $matches)){
    if ( substr($matches[1], 0, 1) == "/" ){
      return $url_parts['scheme'] . "://" . $url_parts['host'] . trim($matches[1]);
    }
    else{
      return trim($matches[1]);
    }
  } else {
    return false;
  }
}
//审核视频 curl
function get_data($url){
  $oCurl = curl_init();
  //模拟浏览器
  $header[] = "deo.com";
  $user_agent = "Mozilla/4.0 (Linux; Andro 6.0; Nexus 5 Build) AppleWeb/537.36 (KHTML, like Gecko)";
  curl_setopt($oCurl, CURLOPT_URL, $url);
  curl_setopt($oCurl, CURLOPT_HTTPHEADER,$header);
  curl_setopt($oCurl, CURLOPT_HEADER, true);
  curl_setopt($oCurl, CURLOPT_NOBODY, true);
  curl_setopt($oCurl, CURLOPT_USERAGENT,$user_agent);
  curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 );
  // 不用 POST 方式请求, 意思就是通过 GET 请求
  curl_setopt($oCurl, CURLOPT_POST, false);
  $sContent = curl_exec($oCurl);
  // 获得响应结果里的：头大小
  $headerSize = curl_getinfo($oCurl, CURLINFO_HEADER_SIZE);
  // 根据头大小去获取头信息内容
  $header = substr($sContent, 0, $headerSize);
  curl_close($oCurl);
  return $header;
}

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