YTDL v2

<?php
/* READ ME!
/* Required Tools on This Script : wget, php5.6 - 7.1 [ cli ]
/* Created By 0xCor3 | Security Ghost
/* Thanks For Stackoverflow.com && Security Ghost */
system("clear");
$m="\033[1;31m";
$k="\033[1;33m";
$h="\033[1;32m";
$b="\033[1;34m";
$baseUrl = 'https://www.googleapis.com/youtube/v3/';
$apiKey = 'AIzaSyA5vOzQg5uXEjEz3eLiahKrIvTcFpc7G8A';
function banner(){
    echo "\t=====================================\n";
    echo "\t=         MAZTER YOUTUBE M4A        =\n";
    echo "\t=      FROM CHANNEL DOWNLOADER      =\n";
    echo "\t=     By 0xCor3 | Security Ghost    =\n";
    echo "\t=====================================\n";
}

function Grabmp3($id){
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, "http://saveitoffline.com/process/?url=https://www.youtube.com/watch?v=".$id."&type=json");
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)");
        $ex = curl_exec($ch);
        $gLink = json_decode($ex);
        $title = $gLink->title;
        $dl = $gLink->urls[19]->id;
        $hm = $title."|".$dl;
        return($hm);

    }
function loadz($url){
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)");
        $ex = curl_exec($ch);
        curl_close($ch);
        return($ex);
    }
function GInfo($apiKey,$channelId){
    $m="\033[1;31m";
    $k="\033[1;33m";
    $h="\033[1;32m";
    $b="\033[1;34m";
    $r = loadz("https://www.googleapis.com/youtube/v3/channels?part=snippet&id={$channelId}&key={$apiKey}");
    $dcd = json_decode($r);
    if(preg_match("/description/i", $r)){
        $title = $dcd->items[0]->snippet->title;
        $curl = $dcd->items[0]->snippet->customUrl;
        $desc = $dcd->items[0]->snippet->description;
    }else{
        echo $m."Channel Not FOUND Exiting...\n";
        sleep(3);
        exit();
    }
    $banner = "{$h}\n\n";
    $banner.= "= Channel Name : ".$k.$title.$h."\n";
    $banner.= "= Channel URL : {$b}https://www.youtube.com/c/".$curl.$h."\n";
    $banner.= "+++++++++++ Channel Description ++++++++++\n";
    $banner.= $m.$desc.$h."\n";
    $banner.= "++++++++++++++++++++++++++++++++++++++++++\n";
    $banner.= "\n\n";

    return($banner);
}
    banner()."\n";
    echo "Channel ID : "; $channelId = trim(fgets(STDIN));
    echo GInfo($apiKey,$channelId);
    echo "Lanjut ? (y/n) : "; $lanjut = trim(fgets(STDIN));
    if($lanjut == "y"){
            $params = [
                'id'=> $channelId,
                'part'=> 'contentDetails',
                'key'=> $apiKey
            ];
            $url = $baseUrl . 'channels?' . http_build_query($params);
            $json = json_decode(loadz($url), true);

            $playlist = $json['items'][0]['contentDetails']['relatedPlaylists']['uploads'];

            $params = [
                'part'=> 'snippet',
                'playlistId' => $playlist,
                'maxResults'=> '50',
                'key'=> $apiKey
            ];
            $url = $baseUrl . 'playlistItems?' . http_build_query($params);
            $json = json_decode(loadz($url), true);

            $videos = [];
            foreach($json['items'] as $video)
                $videos[] = $video['snippet']['resourceId']['videoId'];

            while(isset($json['nextPageToken'])){
                $nextUrl = $url . '&pageToken=' . $json['nextPageToken'];
                $json = json_decode(loadz($nextUrl), true);
                foreach($json['items'] as $video)
                    $videos[] = $video['snippet']['resourceId']['videoId'];
            }
            $z = 1;
            foreach ($videos as $linkid) {
                $rem = explode("|",Grabmp3($linkid));
                $l = trim($rem[1]);
                $t = trim($rem[0]);
                echo $k.$z++."). ".$k.$linkid." => ".$b.$t."\n";
            }
            echo $k."Download All? (y/n) : ".$h; $dls = trim(fgets(STDIN));
            if($dls == "y"){
                foreach ($videos as $linkid){
                    echo $k.$z++."). ".$k.$linkid." => ".$b.$t."\n";
                    system("wget -O '$t.m4a' --trust-server-names '$l'");
                }
            }else{
                echo $m."Okay, Iam Done. Exiting \n";
                sleep(1);
                exit();
            }
    }else{
        echo $m."Okay, Exiting....\n";
        sleep(2);
        exit();
    }
?>