laravel/socialite/src/Two/FacebookProvider.php

EngineersBlog-LaravelSocialite-FacebookProvider.php

protected function getUserByToken($token)
{
    $meUrl = $this->graphUrl.'/'.$this->version.'/me?access_token='.$token.'&fields='.implode(',', $this->fields);

    if (! empty($this->clientSecret)) {
        $appSecretProof = hash_hmac('sha256', $token, $this->clientSecret);

        $meUrl .= '&appsecret_proof='.$appSecretProof;
    }

    $response = $this->getHttpClient()->get($meUrl, [
        'headers' => [
            'Accept' => 'application/json',
        ],
    ]);

    return json_decode($response->getBody(), true);
}