Probleem met download functie

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Dylan Zoethout

Dylan Zoethout

29/10/2013 18:51:16
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Beste leden,

Ik heb problemen met mijn website.

Het lukt me maar niet om het downloaden werkend te krijgen.

Zouden jullie me kunnen helpen ik weet niet wat het probleem zo moeten zijn:
https://playslim.com/download/
 
PHP hulp

PHP hulp

26/11/2024 00:07:00
 

29/10/2013 18:53:46
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Wat is het script? Zo komen we niet ver...
 
Dylan Zoethout

Dylan Zoethout

29/10/2013 18:57:22
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Code (php)
PHP script in nieuw venster Selecteer het PHP script
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<?php

// Ensure the PHP extensions CURL and JSON are installed.
if (!function_exists('curl_init')) {
    throw new Exception('Script requires the PHP CURL extension.');
    exit(0);
}
if (!function_exists('json_decode')) {
    throw new Exception('Script requires the PHP JSON extension.');
    exit(0);
}

// Downloading HD Videos may take some time.
ini_set('max_execution_time', 0);
// Writing HD Videos to your disk, may need some extra resources.
ini_set('memory_limit', '64M');

// Include the config interface.
require('youtube-dl.config.php');
// Include helper functions for usort.
require('comparisonfunctions.usort.php');

/**
 *  yt_downloader Class
 */
class yt_downloader implements cnfg
{
    /**
     *  Class constructor method.
     *  @access  public
     *  @return  void
     */
    public function __construct($str=NULL, $instant=FALSE, $out=NULL)
    {
        // Required YouTube URLs.
        $this->YT_BASE_URL = "https://www.youtube.com/";
        $this->YT_INFO_URL = $this->YT_BASE_URL . "get_video_info?video_id=%s&el=embedded&ps=default&eurl=&hl=en_US";
        $this->YT_INFO_ALT = $this->YT_BASE_URL . "oembed?url=%s&format=json";
        $this->YT_THUMB_URL = "http://img.youtube.com/vi/%s/%s.jpg";
        $this->YT_THUMB_ALT = "http://i1.ytimg.com/vi/%s/%s.jpg";

        $this->CURL_UA = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko Firefox/11.0";

        // Set default parameters for the download instance.
        $this->audio = FALSE;           # Formatted output filename(.ext) of the object's audio output.
        $this->video = FALSE;           # Formatted output filename(.ext) of the object's video output.
        $this->thumb = FALSE;           # Formatted output filename(.ext) of the object's preview image.
        $this->videoID = FALSE;         # YouTube video id.
        $this->videoExt = FALSE;        # Filetype of the object's video ouput file.
        $this->videoTitle = FALSE;      # Formatted output filename by original YouTube video title /wo ext.
        $this->videoThumb = FALSE;      # YouTube URL of the object's preview image.
        $this->videoQuality = FALSE;    # Whether downloading videos at the best quality available.
        $this->audioQuality = FALSE;    # Default audio output sample rate (in kbits).
        $this->audioFormat = FALSE;     # Default audio output filetype.
        $this->videoThumbSize = FALSE;  # Whether default thumbnail size is 120*90, or 480*360 px.
        $this->defaultDownload = FALSE; # Whether downloading video, or audio is default.
        $this->downloadThumbs = TRUE;   # Whether to download thumnails for downloads (Boolean TRUE/FALSE).
        $this->downloadsDir = FALSE;    # Relative path to the directory to save downloads to.
        $this->downloadsArray = FALSE;  # Array, containing the YouTube URLs of all videos available.
        $this->FfmpegLogsDir = FALSE;   # Absolute path to the directory to save ffmpeg logs to.
        $this->ffmpegLogfile = FALSE;   # Absolute path to the directory to save ffmpeg logs to.
        $this->FfmpegLogsActive = TRUE; # Whether to log ffmpeg processes (Boolean TRUE/FALSE).

        self::set_downloads_dir(cnfg::Download_Folder);
        self::set_ffmpegLogs_dir(cnfg::Ffmpeg_LogsDir);
        self::set_ffmpegLogs_active(cnfg::Ffmpeg_LogsActive);
        self::set_default_download(cnfg::Default_Download);
        self::set_download_thumbnail(cnfg::Download_Thumbnail);
        self::set_thumb_size(cnfg::Default_Thumbsize);
        self::set_video_quality(cnfg::Default_Videoquality);
        self::set_audio_quality(cnfg::Default_Audioquality);
        self::set_audio_format(cnfg::Default_Audioformat);

        // Optional constructor argument #1 will be used as YouTube Video-ID.
        if($str != NULL) {
            self::set_youtube($str);
            // Optional constructor argument #2 will start an instant download.
            if($instant === TRUE) {
                // Optional constructor argument #3 defines the media type to be saved.
                self::do_download($out);
            }
        }
    }

    public function do_download($out)
    {
        $action = ($out == "audio" || $out == "video") ? $out : self::get_default_download();
        return ($action == "audio" ) ? self::download_audio() : self::download_video();
    }

    /**
     *  Set the YouTube Video that shall be downloaded.
     *  @access  public
     *  @return  void
     */
    public function set_youtube($str)
    {
        /**
         *  Parse input string to determine if it's a Youtube URL,
         *  or an ID. If it's a URL, extract the ID from it.
         */
        $tmp_id = self::parse_yturl($str);
        $vid_id = ($tmp_id !== FALSE) ? $tmp_id : $str;

        /**
         *  Check the public video info feed to check if we got a
         *  valid Youtube ID. If not, throw an exception and exit.
         */
        $url = sprintf($this->YT_BASE_URL . "watch?v=%s", $vid_id);
        $url = sprintf($this->YT_INFO_ALT, urlencode($url));
        if(self::curl_httpstatus($url) !== 200) {
            throw new Exception("Invalid Youtube video ID: $vid_id");
            exit(); }
        else { self::set_video_id($vid_id); }
    }

    /**
     *  Get the direct links to the YouTube Video.
     *  @access  public
     *  @return  integer  Returns (int)0 if download succeded, or (int)1 if
     *                    the video already exists on the download directory.
     */
    public function get_downloads()
    {
        /**
         *  If we have a valid Youtube Video Id, try to get the real location
         *  and download the video. If not, throw an exception and exit.
         */
        $id = self::get_video_id();
        if($id === FALSE) {
            throw new Exception("Missing video id. Use set_youtube() and try again.");
            exit();
        }
        else {
            /**
             *  Try to parse the YouTube Video-Info file to get the video URL map,
             *  that holds the locations on the YouTube media servers.
             */
            $v_info = self::get_yt_info();
            if(self::get_videodata($v_info) === TRUE)
            {
                $vids = self::get_url_map($v_info);
                /**
                 *  If extracting the URL map failed, throw an exception
                 *  and exit. Try to include the original YouTube error
                 *  - eg "forbidden by country"-message.
                 */
                if(!is_array($vids) || sizeof($vids) == 0) {
                    $err_msg = "";
                    if(strpos($v_info, "status=fail") !== FALSE) {
                        preg_match_all('#reason=(.*?)$#si', $v_info, $err_matches);
                        if(isset($err_matches[1][0])) {
                            $err_msg = urldecode($err_matches[1][0]);
                            $err_msg = str_replace("Watch on YouTube", "", strip_tags($err_msg));
                            $err_msg = "Youtube error message: ". $err_msg;
                        }
                    }
                    return $err_msg;
                }
                else {
                    $quality = self::get_video_quality();
                    if($quality == 1) {
                        usort($vids, 'asc_by_quality');
                    } else if($quality == 0) {
                        usort($vids, 'desc_by_quality');
                    }
                    self::set_yt_url_map($vids);
                    return $vids;
                }
            }
        }
    }

    /**
     *  Try to download the defined YouTube Video.
     *  @access  public
     *  @return  integer  Returns (int)0 if download succeded, or (int)1 if
     *                    the video already exists on the download directory.
     */
    public function download_video($c=NULL)
    {
        $c = ($c !== NULL) ? $c : 0;
        /**
         *  If we have a valid Youtube Video Id, try to get the real location
         *  and download the video. If not, throw an exception and exit.
         */
        $id = self::get_video_id();
        if($id === FALSE) {
            throw new Exception("Missing video id. Use set_youtube() and try again.");
            exit();
        }
        else {
            $yt_url_map = self::get_yt_url_map();
            if($yt_url_map === FALSE) {
                $vids = self::get_downloads();
                self::set_yt_url_map($vids);
            } else {
                $vids = $yt_url_map;
            }
            if(!is_array($vids)) {
                throw new Exception("Grabbing original file location(s) failed. $vids");
                exit();
            }
            else {
                /**
                 *  Format video title and set download and file preferences.
                 */
                $title   = self::get_video_title();
                $path    = self::get_downloads_dir();

                $YT_Video_URL = $vids[$c]["url"];
                $res = $vids[$c]["type"];
                $ext = $vids[$c]["ext"];

                $videoTitle    = $title . "_-_" . $res ."_-_youtubeid-$id";
                $videoFilename = "$videoTitle.$ext";
                $thumbFilename = "$videoTitle.jpg";
                $video         = $path . $videoFilename;

                self::set_video($videoFilename);
                self::set_thumb($thumbFilename);

                /**
                 *  PHP doesn't cache information about non-existent files.
                 *  So, if you call file_exists() on a file that doesn't exist,
                 *  it will return FALSE until you create the file. The problem is,
                 *  that once you've created a file, file_exists() will return TRUE -
                 *  even if you've deleted the file meanwhile and the cache haven't
                 *  been cleared! Even though unlink() clears the cache automatically,
                 *  since we don't know which way a file may have been deleted (if it existed),
                 *  we clear the file status cache to ensure a valid file_exists result.
                 */
                clearstatcache();

                /**
                 *  If the video does not already exist in the download directory,
                 *  try to download the video and the video preview image.
                 */
                if(!file_exists($video))
                {
                    $download_thumbs = self::get_download_thumbnail();
                    if($download_thumbs === TRUE) {
                        self::check_thumbs($id);
                    }
                    touch($video);
                    chmod($video, 0775);

                    // Download the video.
                    $download = self::curl_get_file($YT_Video_URL, $video);

                    if($download === FALSE) {
                        throw new Exception("Saving $videoFilename to $path failed.");
                        exit();
                    }
                    else {
                        if($download_thumbs === TRUE) {
                            // Download the video preview image.
                            $thumb = self::get_video_thumb();
                            if($thumb !== FALSE)
                            {
                                $thumbnail = $path . $thumbFilename;
                                self::curl_get_file($thumb, $thumbnail);
                                chmod($thumbnail, 0775);
                            }
                        }
                        return 0;
                    }
                }
                else {
                    return 1;
                }
            }
        }
    }

    public function download_audio()
    {
        $ffmpeg = self::has_ffmpeg();
        if($ffmpeg === FALSE) {
            throw new Exception("You must have Ffmpeg installed in order to use this function.");
            exit();
        }
        else if($ffmpeg === TRUE) {
            self::set_video_quality(1);
            $dl = self::download_video();
            if($dl == 0 || $dl == 1)
            {
                $title = self::get_video_title();
                $path = self::get_downloads_dir();
                $ext = self::get_audio_format();
                $ffmpeg_infile = $path . self::get_video();
                $ffmpeg_outfile = $path . $title .".". $ext;

                if(!file_exists($ffmpeg_outfile))
                {
                    // Whether to log the ffmpeg process.
                    $logging = self::get_ffmpegLogs_active();

                    // Ffmpeg command to convert the input video file into an audio file.
                    $ab = self::get_audio_quality() . "k";
                    $cmd = "ffmpeg -i \"$ffmpeg_infile\" -ar 44100 -ab $ab -ac 2 \"$ffmpeg_outfile\"";

                    if($logging !== FALSE)
                    {
                        // Create a unique log file name per process.
                        $ffmpeg_logspath = self::get_ffmpegLogs_dir();
                        $ffmpeg_logfile = "ffmpeg." . date("Ymdhis") . ".log";
                        $logfile = "./" . $ffmpeg_logspath . $ffmpeg_logfile;
                        self::set_ffmpeg_Logfile($logfile);

                        // Create new log file (via command line).
                        exec("touch $logfile");
                        exec("chmod 777 $logfile");
                    }

                    // Execute Ffmpeg command line command.
                    $Ffmpeg = exec($cmd);
                    $log_it = "echo \"$Ffmpeg\" > \"$logfile\"";
                    $lg = `$log_it`;

                    // If the video did not already existed, delete it (since we probably wanted the soundtrack only).
                    if($dl == 0) {
                        unlink($ffmpeg_infile);
                    }

                    clearstatcache();
                    if(file_exists($ffmpeg_outfile) !== FALSE) {
                        self::set_audio($title .".". $ext);
                        return 0;
                    } else {
                        throw new Exception("Something went wrong while converting the video into $ext format, sorry!");
                        exit();
                    }
                }
                else {
                    self::set_audio($title .".". $ext);
                    return 1;
                }
            }
        } else {
            throw new Exception("Cannot locate your Ffmpeg installation?! Thus, cannot convert the video into $ext format.");
            exit();
        }
    }

    /**
     *  Get filestats for the downloaded audio/video file.
     *  @access  public
     *  @return  mixed   Returns an array containing formatted filestats,
     *                   or (boolean) FALSE if file doesn't exist.
     */
    public function video_stats()
    {
        $file = self::get_video();
        $path = self::get_downloads_dir();

        clearstatcache();
        $filestats = stat($path . $file);
        if($filestats !== FALSE) {
            return array(
                "size" => self::human_bytes($filestats["size"]),
                "created" => date ("d.m.Y H:i:s.", $filestats["ctime"]),
                "modified" => date ("d.m.Y H:i:s.", $filestats["mtime"])
            );
        }
        else { return FALSE; }
    }

    /**
     *  Check if input string is a valid YouTube URL
     *  and try to extract the YouTube Video ID from it.
     *  @access  private
     *  @return  mixed    Returns YouTube Video ID, or (boolean) FALSE.
     */
    private function parse_yturl($url)
    {
        $pattern = '#^(?:https?://)?';    # Optional URL scheme. Either http or https.
        $pattern .= '(?:www\.)?';         #  Optional www subdomain.
        $pattern .= '(?:';                #  Group host alternatives:
        $pattern .=   'youtu\.be/';       #    Either youtu.be,
        $pattern .=   '|youtube\.com';    #    or youtube.com
        $pattern .=   '(?:';              #    Group path alternatives:
        $pattern .=     '/embed/';        #      Either /embed/,
        $pattern .=     '|/v/';           #      or /v/,
        $pattern .=     '|/watch\?v=';    #      or /watch?v=,
        $pattern .=     '|/watch\?.+&v='; #      or /watch?other_param&v=
        $pattern .=   ')';                #    End path alternatives.
        $pattern .= ')';                  #  End host alternatives.
        $pattern .= '([\w-]{11})';        # 11 characters (Length of Youtube video ids).
        $pattern .= '(?:.+)?$#x';         # Optional other ending URL parameters.
        preg_match($pattern, $url, $matches);
        return (isset($matches[1])) ? $matches[1] : FALSE;
    }

    /**
     *  Get internal YouTube info for a Video.
     *  @access  private
     *  @return  string   Returns video info as string.
     */
    private function get_yt_info()
    {
        $url = sprintf($this->YT_INFO_URL, self::get_video_id());
        return self::curl_get($url);
    }

    /**
     *  Get the public YouTube Info-Feed for a Video.
     *  @access  private
     *  @return  mixed    Returns array, containing the YouTube Video-Title
     *                    and preview image URL, or (boolean) FALSE
     *                    if parsing the feed failed.
     */
    private function get_public_info()
    {
        $url = sprintf($this->YT_BASE_URL . "watch?v=%s", self::get_video_id());
        $url = sprintf($this->YT_INFO_ALT, urlencode($url));
        $info = json_decode(self::curl_get($url), TRUE);

        if(is_array($info) && sizeof($info) > 0) {
            return array(
                "title" => $info["title"],
                "thumb" => $info["thumbnail_url"]
            );
        }
        else { return FALSE; }
    }

    /**
     *  Get formatted video data from the public YouTube Info-Feed.
     *  @access  private
     *  @param   string   $str  Info-File contents for a YouTube Video.
     *  @return  mixed    Returns the formatted YouTube Video-Title as string,
     *                    or (boolean) FALSE if extracting failed.
     */
    private function get_videodata($str)
    {
        $yt_info = $str;
        $pb_info = self::get_public_info();

        if($pb_info !== FALSE) {
            $htmlTitle = htmlentities(utf8_decode($pb_info["title"]));
            $videoTitle = self::canonicalize($htmlTitle);
        }
        else {
            $videoTitle = self::formattedVideoTitle($yt_info);
        }

        if(is_string($videoTitle) && strlen($videoTitle) > 0) {
            self::set_video_title($videoTitle);
            return TRUE;
        }
        else { return FALSE; }
    }

    /**
     *  Get the URL map for a YouTube Video.
     *  @access  private
     *  @param   string   $data  Info-File contents for a YouTube Video.
     *  @return  mixed    Returns an array, containg the Video URL map,
     *                    or (boolean) FALSE if extracting failed.
     */
    private function get_url_map($data)
    {
        preg_match('/stream_map=(.[^&]*?)&/i',$data,$match);
        if(!isset($match[1])) {
            return FALSE;
        }
        else {
            $fmt_url =  urldecode($match[1]);
            if(preg_match('/^(.*?)\\\\u0026/',$fmt_url,$match2)) {
                $fmt_url = $match2[1];
            }

            $urls = explode(',',$fmt_url);
            $tmp = array();

            foreach($urls as $url) {
                if(preg_match('/itag=([0-9]+)&url=(.*?)&.*?/si',$url,$um))
                {
                    $u = urldecode($um[2]);
                    $tmp[$um[1]] = $u;
                }
            }

            $formats = array(
                '13' => array('3gp', '240p', '10'),
                '17' => array('3gp', '240p', '9'),
                '36' => array('3gp', '320p', '8'),
                '5'  => array('flv', '240p', '7'),
                '6'  => array('flv', '240p', '6'),
                '34' => array('flv', '320p', '5'),
                '35' => array('flv', '480p', '4'),
                '18' => array('mp4', '480p', '3'),
                '22' => array('mp4', '720p', '2'),
                '37' => array('mp4', '1080p', '1')
            );

            foreach ($formats as $format => $meta) {
                if (isset($tmp[$format])) {
                    $videos[] = array('pref' => $meta[2], 'ext' => $meta[0], 'type' => $meta[1], 'url' => $tmp[$format]);
                }
            }
            return $videos;
        }
    }

    /**
     *  Get the preview image for a YouTube Video.
     *  @access  private
     *  @param   string   $id  Valid YouTube Video-ID.
     *  @return  mixed    Returns the image URL as string,
     *                    or (boolean) FALSE if no image found.
     */
    private function check_thumbs($id)
    {
        $thumbsize = self::get_thumb_size();
        $thumb_uri = sprintf($this->YT_THUMB_URL, $id, $thumbsize);

        if(self::curl_httpstatus($thumb_uri) == 200) {
            $th = $thumb_uri;
        }
        else {
            $thumb_uri = sprintf($this->YT_THUMB_ALT, $id, $thumbsize);

            if(self::curl_httpstatus($thumb_uri) == 200) {
                $th = $thumb_uri;
            }
            else { $th = FALSE; }
        }
        self::set_video_thumb($th);
    }

    /**
     *  Get the YouTube Video Title and format it.
     *  @access  private
     *  @param   string   $str  Input string.
     *  @return  string   Returns cleaned input string.
     */
    private function formattedVideoTitle($str)
    {
        preg_match_all('#title=(.*?)$#si', urldecode($str), $matches);

        $title = explode("&", $matches[1][0]);
        $title = $title[0];
        $title = htmlentities(utf8_decode($title));

        return self::canonicalize($title);
    }

    /**
     *  Format the YouTube Video Title into a valid filename.
     *  @access  private
     *  @param   string   $str  Input string.
     *  @return  string   Returns cleaned input string.
     */
    private function canonicalize($str)
    {
        $str = trim($str); # Strip unnecessary characters from the beginning and the end of string.
        $str = str_replace("&quot;", "", $str); # Strip quotes.
        $str = self::strynonym($str); # Replace special character vowels by their equivalent ASCII letter.
        $str = preg_replace("/[[:blank:]]+/", "_", $str); # Replace all blanks by an underscore.
        $str = preg_replace('/[^\x9\xA\xD\x20-\x7F]/', '', $str); # Strip everything what is not valid ASCII.
        $str = preg_replace('/[^\w\d_-]/si', '', $str); # Strip everything what is not a word, a number, "_", or "-".
        $str = str_replace('__', '_', $str); # Fix duplicated underscores.
        $str = str_replace('--', '-', $str); # Fix duplicated minus signs.
        if(substr($str, -1) == "_" OR substr($str, -1) == "-") {
            $str = substr($str, 0, -1); # Remove last character, if it's an underscore, or minus sign.
        }
        return trim($str);
    }

    /**
     *  Replace common special entity codes for special character
     *  vowels by their equivalent ASCII letter.
     *  @access  private
     *  @param   string   $str  Input string.
     *  @return  string   Returns cleaned input string.
     */
    private function strynonym($str)
    {
        $SpecialVowels = array(
            '&Agrave;'=>'A', '&agrave;'=>'a', '&Egrave;'=>'E', '&egrave;'=>'e', '&Igrave;'=>'I', '&igrave;'=>'i', '&Ograve;'=>'O', '&ograve;'=>'o', '&Ugrave;'=>'U', '&ugrave;'=>'u',
            '&Aacute;'=>'A', '&aacute;'=>'a', '&Eacute;'=>'E', '&eacute;'=>'e', '&Iacute;'=>'I', '&iacute;'=>'i', '&Oacute;'=>'O', '&oacute;'=>'o', '&Uacute;'=>'U', '&uacute;'=>'u', '&Yacute;'=>'Y', '&yacute;'=>'y',
            '&Acirc;'=>'A', '&acirc;'=>'a', '&Ecirc;'=>'E', '&ecirc;'=>'e', '&Icirc;'=>'I',  '&icirc;'=>'i', '&Ocirc;'=>'O', '&ocirc;'=>'o', '&Ucirc;'=>'U', '&ucirc;'=>'u',
            '&Atilde;'=>'A', '&atilde;'=>'a', '&Ntilde;'=>'N', '&ntilde;'=>'n', '&Otilde;'=>'O', '&otilde;'=>'o',
            '&Auml;'=>'Ae', '&auml;'=>'ae', '&Euml;'=>'E', '&euml;'=>'e', '&Iuml;'=>'I', '&iuml;'=>'i', '&Ouml;'=>'Oe', '&ouml;'=>'oe', '&Uuml;'=>'Ue', '&uuml;'=>'ue', '&Yuml;'=>'Y', '&yuml;'=>'y',
            '&Aring;'=>'A', '&aring;'=>'a', '&AElig;'=>'Ae', '&aelig;'=>'ae', '&Ccedil;'=>'C', '&ccedil;'=>'c', '&OElig;'=>'OE', '&oelig;'=>'oe', '&szlig;'=>'ss', '&Oslash;'=>'O', '&oslash;'=>'o'
        );
        return strtr($str, $SpecialVowels);
    }

    /**
     *  Check if given directory exists. If not, try to create it.
     *  @access  private
     *  @param   string   $dir  Path to the directory.
     *  @return  boolean  Returns (boolean) TRUE if directory exists,
     *                    or was created, or FALSE if creating non-existing
     *                    directory failed.
     */
    private function valid_dir($dir)
    {
        if(is_dir($dir) !== FALSE) {
            chmod($dir, 0777); # Ensure permissions. Otherwise CURLOPT_FILE will fail!
            return TRUE;
        }
        else {
            return (bool) ! @mkdir($dir, 0777);
        }
    }

    /**
     *  Check on the command line if we can find an Ffmpeg installation on the script host.
     *  @access  private
     *  @return  boolean  Returns (boolean) TRUE if Ffmpeg is installed on the server,
     *                    or FALSE if not.
     */
    private function has_ffmpeg()
    {
        $sh = `which ffmpeg`;
        return (bool) (strlen(trim($sh)) > 0);
    }

    /**
     *  HTTP HEAD request with curl.
     *  @access  private
     *  @param   string   $url  String, containing the URL to curl.
     *  @return  intval   Returns a HTTP status code.
     */
    private function curl_httpstatus($url)
    {
        $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_USERAGENT, $this->CURL_UA);
    curl_setopt($ch, CURLOPT_REFERER, $this->YT_BASE_URL);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_NOBODY, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
        $str = curl_exec($ch);
        $int = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return intval($int);
    }

    /**
     *  HTTP GET request with curl.
     *  @access  private
     *  @param   string   $url  String, containing the URL to curl.
     *  @return  string   Returns string, containing the curl result.
     */
    private function curl_get($url)
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_USERAGENT, $this->CURL_UA);
        curl_setopt($ch, CURLOPT_REFERER, $this->YT_BASE_URL);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $contents = curl_exec ($ch);
        curl_close ($ch);
        return $contents;
    }

    /**
     *  HTTP GET request with curl that writes the curl result into a local file.
     *  @access  private
     *  @param   string   $remote_file  String, containing the remote file URL to curl.
     *  @param   string   $local_file   String, containing the path to the file to save
     *                                  the curl result in to.
     *  @return  void
     */
    private function curl_get_file($remote_file, $local_file)
    {
        $ch = curl_init($remote_file);
        curl_setopt($ch, CURLOPT_USERAGENT, $this->CURL_UA);
        curl_setopt($ch, CURLOPT_REFERER, $this->YT_BASE_URL);
        $fp = fopen($local_file, 'w');
        curl_setopt($ch, CURLOPT_FILE, $fp);
        curl_exec ($ch);
        curl_close ($ch);
        fclose($fp);
    }

    // Getter and Setter for the downloaded audio file.
    public function get_audio() {
        return $this->audio; }
    private function set_audio($audio) {
        $this->audio = $audio; }

    // Getter and Setter for the downloaded video file.
    public function get_video() {
        return $this->video; }
    private function set_video($video) {
        $this->video = $video; }

    // Getter and Setter for the downloaded video preview image.
    public function get_thumb() {
        return $this->thumb; }
    private function set_thumb($img) {
        if(is_string($img)) {
            $this->thumb = $img;
        } else {
            throw new Exception("Invalid thumbnail given: $img"); }
    }

    // Getter and Setter whether to download the video, or convert to audio by default.
    public function get_default_download() {
        return $this->defaultDownload; }
    public function set_default_download($action) {
        if($action == "audio" || $action == "video") {
            $this->defaultDownload = $action;
        } else {
            throw new Exception("Invalid download type. Must be either 'audio', or 'video'."); }
    }

    // Getter and Setter for the video quality.
    public function get_video_quality() {
        return $this->videoQuality; }
    public function set_video_quality($q) {
        if(in_array($q, array(0,1))) {
            $this->videoQuality = $q;
        } else {
            throw new Exception("Invalid video quality."); }
    }

    // Getter and Setter for the audio quality.
    public function get_audio_quality() {
        return $this->audioQuality; }
    public function set_audio_quality($q) {
        if($q >= 128 && $q <= 320) {
            $this->audioQuality = $q;
        } else {
            throw new Exception("Audio sample rate must be between 128 and 320."); }
    }

    // Getter and Setter for the audio output filetype.
    public function get_audio_format() {
        return $this->audioFormat; }
    public function set_audio_format($ext) {
        $valid_exts = array("mp3", "wav", "ogg", "mp4");
        if(in_array($ext, $valid_exts)) {
            $this->audioFormat = $ext;
        } else {
            throw new Exception("Invalid audio filetype '$ext' defined.
            Valid filetypes are: " . implode(", ", $valid_exts) ); }
    }

    // Getter and Setter for the download directory.
    public function get_downloads_dir() {
        return $this->downloadsDir; }
    public function set_downloads_dir($dir) {
        if(self::valid_dir($dir) !== FALSE) {
            $this->downloadsDir = $dir;
        } else {
            throw new Exception("Can neither find, nor create download folder: $dir"); }
    }

    // Getter and Setter whether to log Ffmpeg processes.
    public function get_ffmpegLogs_active() {
        return $this->FfmpegLogsDir; }
    public function set_ffmpegLogs_active($b) {
        $this->FfmpegLogsActive = (bool) ($b !== FALSE); }

    // Getter and Setter for the YouTube URL map.
    public function get_yt_url_map() {
        return $this->downloadsArray; }
    private function set_yt_url_map($videos) {
        $this->downloadsArray = $videos; }

    // Getter and Setter for the YouTube Video-ID.
    public function get_video_id() {
        return $this->videoID; }
    public function set_video_id($id) {
        if(strlen($id) == 11) {
            $this->videoID = $id;
        } else {
            throw new Exception("$id is not a valid Youtube Video ID."); }
    }

    // Getter and Setter for the formatted video title.
    public function get_video_title() {
        return $this->videoTitle; }
    public function set_video_title($str) {
        if(is_string($str)) {
            $this->videoTitle = $str;
        } else {
            throw new Exception("Invalid title given: $str"); }
    }

    // Getter and Setter for thumbnail preferences.
    public function get_download_thumbnail() {
        return $this->downloadThumbs; }
    public function set_download_thumbnail($q) {
        if($q == TRUE || $q == FALSE) {
            $this->downloadThumbs = (bool) $q;
        } else {
            throw new Exception("Invalid argument given to set_download_thumbnail."); }
    }

    // Getter and Setter for the video preview image size.
    public function get_thumb_size() {
        return $this->videoThumbSize; }
    public function set_thumb_size($s) {
        if($s == "s") {
            $this->videoThumbSize = "default"; }
        else if($s == "l") {
            $this->videoThumbSize = "hqdefault"; }
        else {
            throw new Exception("Invalid thumbnail size specified."); }
    }

    // Getter and Setter for the object's Ffmpeg log file.
    public function get_ffmpeg_Logfile() {
        return $this->ffmpegLogfile; }
    private function set_ffmpeg_Logfile($str) {
        $this->ffmpegLogfile = $str; }


    // Getter and Setter for the remote video preview image.
    public function get_video_thumb() {
        return $this->videoThumb; }
    private function set_video_thumb($img) {
        $this->videoThumb = $img; }

    // Getter and Setter for the Ffmpeg-Logs directory.
    public function get_ffmpegLogs_dir() {
        return $this->FfmpegLogsDir; }
    public function set_ffmpegLogs_dir($dir) {
        if(self::valid_dir($dir) !== FALSE) {
            $this->FfmpegLogsDir = $dir;
        } else {
            throw new Exception("Can neither find, nor create ffmpeg log directory '$dir', but logging is enabled."); }
    }

    /**
     *  Format file size in bytes into human-readable string.
     *  @access  public
     *  @param   string   $bytes   Filesize in bytes.
     *  @return  string   Returns human-readable formatted filesize.
     */
    public function human_bytes($bytes)
    {
        $fsize = $bytes;
        switch ($bytes):
            case $bytes < 1024:
                $fsize = $bytes .' B'; break;
            case $bytes < 1048576:
                $fsize = round($bytes / 1024, 2) .' KiB'; break;
            case $bytes < 1073741824:
                $fsize = round($bytes / 1048576, 2) . ' MiB'; break;
            case $bytes < 1099511627776:
                $fsize = round($bytes / 1073741824, 2) . ' GiB'; break;
        endswitch;
        return $fsize;
    }
}

[/code]
 



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