PHP 获取视频时长的实例代码

/** 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($matches[1]);    }  } else {    return false;  }}//审核视频 curlfunction get_data($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;}