PHP 获取视频时长的实例代码

具体代码如下所示：

/*
* 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;
}

总结

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