Php get email and username

API
7 
<?php
	$clientID = 'clientid';
	$sclientID = 'clientsecret';

if(!empty($_GET["code"])) {

	$token = $_GET["code"];
	$tokenid= $_GET["id_token"];

    echo $tokenid;

        //  PRMEIERE REQUETE

    $ch = curl_init();

    $url = 'https://id.twitch.tv/oauth2/token';

    $opts = [
    CURLOPT_URL            => $url,
    CURLOPT_CUSTOMREQUEST  => 'POST',
    CURLOPT_RETURNTRANSFER => false

    ];

    $post = [
        'client_id' => $clientID,
        'client_secret' => $sclientID,
        'code' => $token,
        'grant_type' => 'authorization_code',
        'redirect_uri'  => 'http://tworld.lescigales.org/api.php'
            ];

    curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    curl_setopt_array($ch, $opts);
    $response = curl_exec($ch);

    $json_array = json_decode($response, true);
    curl_close($ch);

    $validate_token = $json_array['access_token'];
    //$userinfo = $json_array['userinfo'];
    //echo $userinfo;

    echo '<br><br><br>';

        //  SECONDE REQUETE

    $ch = curl_init();

    $url = 'https://api.twitch.tv/helix/users';

    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
     curl_setopt ($ch, CURLOPT_HTTPHEADER, array (
         'Authorization: Bearer '. $validate_token,
         'Client-ID: '. $clientID
     ));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);

    $response = curl_exec($ch);
    echo $response;

    curl_close($ch);

    $json_array = json_decode($response, true);
    echo $json_array;
}

else{
	echo '<a href="https://id.twitch.tv/oauth2/authorize?client_id=' . $clientID . '&redirect_uri=http://tworld.lescigales.org/api.php&response_type=code&scope=user_read">Connexion</a>';
}

?>