YouTube is the most popular video-sharing platform that allows the user to upload, view, and share videos online. The videos are watched online and YouTube did not provide any download option for offline uses. If you want to access the raw file of the YouTube video, the video needs to be downloaded. In this tutorial, we will show you how to download videos from YouTube using PHP<\/b>.<\/p>\n
The YouTube video downloader<\/b> script helps to download the YouTube video for offline uses. If your web application needs to access the raw video file from YouTube, downloader script is the easiest way to download YouTube video in PHP<\/b>.<\/p>\nYouTube Video Downloader Library (YouTubeDownloader.class.php)<\/h2>\n
The YouTubeDownloader class helps to retrieve video info and file URL from YouTube video using PHP. This class used the following helper methods to get the YouTube video download link.<\/p>\n
file_get_contents()<\/code> method in PHP.<\/li>\n- extractVideoId()<\/b> \u2013 Get video ID from YouTube video URL.<\/li>\n
- getDownloader()<\/b> \u2013 Get the downloader object if pattern matches otherwise return false.<\/li>\n
- getVideoDownloadLink()<\/b> \u2013 Get the video download URL with video info (itag, quality, title, mime, and format).<\/li>\n
- hasVideo()<\/b> \u2013 Validate the YouTube video URL.<\/li>\n<\/ul>\n
<?php
<\/span>\/**
* CodexWorld
*
* This Downloader class helps to download youtube video.
*
* @class YouTubeDownloader
* @author CodexWorld
* @link http:\/\/www.codexworld.com
* @license http:\/\/www.codexworld.com\/license
*\/
<\/span>class <\/span>YouTubeDownloader <\/span>{
<\/span>\/*
* Video Id for the given url
*\/
<\/span>private <\/span>$video_id<\/span>;
<\/span>\/*
* Video title for the given video
*\/
<\/span>private <\/span>$video_title<\/span>;
<\/span>\/*
* Full URL of the video
*\/
<\/span>private <\/span>$video_url<\/span>;
<\/span>\/*
* store the url pattern and corresponding downloader object
* @var array
*\/
<\/span>private <\/span>$link_pattern<\/span>;
public function <\/span>__construct<\/span>(){
<\/span>$this<\/span>-><\/span>link_pattern <\/span>= <\/span>\"\/^(?:http(?:s)?:\\\/\\\/)?(?:www\\.)?(?:m\\.)?(?:youtu\\.be\\\/|youtube\\.com\\\/(?:(?:watch)?\\?(?:.*&)?v(?:i)?=|(?:embed)\\\/))([^\\?&\\\"'>]+)\/\"<\/span>;
}
<\/span>\/*
* Set the url
* @param string
*\/
<\/span>public function <\/span>setUrl<\/span>(<\/span>$url<\/span>){
<\/span>$this<\/span>-><\/span>video_url <\/span>= <\/span>$url<\/span>;
}
<\/span>\/*
* Get the video information
* return string
*\/
<\/span>private function <\/span>getVideoInfo<\/span>(){
return <\/span>file_get_contents<\/span>(<\/span>\"https:\/\/www.youtube.com\/get_video_info?video_id=\"<\/span>.<\/span>$this<\/span>-><\/span>extractVideoId<\/span>(<\/span>$this<\/span>-><\/span>video_url<\/span>).<\/span>\"&cpn=CouQulsSRICzWn5E&eurl&el=adunit\"<\/span>);
}
<\/span>\/*
* Get video Id
* @param string
* return string
*\/
<\/span>private function <\/span>extractVideoId<\/span>(<\/span>$video_url<\/span>){
<\/span>\/\/parse the url
<\/span>$parsed_url <\/span>= <\/span>parse_url<\/span>(<\/span>$video_url<\/span>);
if(<\/span>$parsed_url<\/span>[<\/span>\"path\"<\/span>] == <\/span>\"youtube.com\/watch\"<\/span>){
<\/span>$this<\/span>-><\/span>video_url <\/span>= <\/span>\"https:\/\/www.\"<\/span>.<\/span>$video_url<\/span>;
}elseif(<\/span>$parsed_url<\/span>[<\/span>\"path\"<\/span>] == <\/span>\"www.youtube.com\/watch\"<\/span>){
<\/span>$this<\/span>-><\/span>video_url <\/span>= <\/span>\"https:\/\/\"<\/span>.<\/span>$video_url<\/span>;
}
if(isset(<\/span>$parsed_url<\/span>[<\/span>\"query\"<\/span>])){
<\/span>$query_string <\/span>= <\/span>$parsed_url<\/span>[<\/span>\"query\"<\/span>];
<\/span>\/\/parse the string separated by '&' to array
<\/span>parse_str<\/span>(<\/span>$query_string<\/span>, <\/span>$query_arr<\/span>);
if(isset(<\/span>$query_arr<\/span>[<\/span>\"v\"<\/span>])){
return <\/span>$query_arr<\/span>[<\/span>\"v\"<\/span>];
}
}
}
<\/span>\/*
* Get the downloader object if pattern matches else return false
* @param string
* return object or bool
*
*\/
<\/span>public function <\/span>getDownloader<\/span>(<\/span>$url<\/span>){
<\/span>\/*
* check the pattern match with the given video url
*\/
<\/span>if(<\/span>preg_match<\/span>(<\/span>$this<\/span>-><\/span>link_pattern<\/span>, <\/span>$url<\/span>)){
return <\/span>$this<\/span>;
}
return <\/span>false<\/span>;
}
<\/span>\/*
* Get the video download link
* return array
*\/
<\/span>public function <\/span>getVideoDownloadLink<\/span>(){
<\/span>\/\/parse the string separated by '&' to array
<\/span>parse_str<\/span>(<\/span>$this<\/span>-><\/span>getVideoInfo<\/span>(), <\/span>$data<\/span>);
<\/span>$videoData <\/span>= <\/span>json_decode<\/span>(<\/span>$data<\/span>[<\/span>'player_response'<\/span>], <\/span>true<\/span>);
<\/span>$videoDetails <\/span>= <\/span>$videoData<\/span>[<\/span>'videoDetails'<\/span>];
<\/span>$streamingData <\/span>= <\/span>$videoData<\/span>[<\/span>'streamingData'<\/span>];
<\/span>$streamingDataFormats <\/span>= <\/span>$streamingData<\/span>[<\/span>'formats'<\/span>];
<\/span>\/\/set video title
<\/span>$this<\/span>-><\/span>video_title <\/span>= <\/span>$videoDetails<\/span>[<\/span>\"title\"<\/span>];
<\/span>\/\/Get the youtube root link that contains video information
<\/span>$final_stream_map_arr <\/span>= array();
<\/span>\/\/Create array containing the detail of video
<\/span>foreach(<\/span>$streamingDataFormats <\/span>as <\/span>$stream<\/span>){
<\/span>$stream_data <\/span>= <\/span>$stream<\/span>;
<\/span>$stream_data<\/span>[<\/span>\"title\"<\/span>] = <\/span>$this<\/span>-><\/span>video_title<\/span>;
<\/span>$stream_data<\/span>[<\/span>\"mime\"<\/span>] = <\/span>$stream_data<\/span>[<\/span>\"mimeType\"<\/span>];
<\/span>$mime_type <\/span>= <\/span>explode<\/span>(<\/span>\";\"<\/span>, <\/span>$stream_data<\/span>[<\/span>\"mime\"<\/span>]);
<\/span>$stream_data<\/span>[<\/span>\"mime\"<\/span>] = <\/span>$mime_type<\/span>