title: Laravel 5.2 curl_init() throwing error "Call to undefined function"
body: <p>I am trying to use FCM in laravel using curl but I am getting error. First I have written one php code in one of my cotroller which is :</p>
  
  <pre><code>$first_name = $request-&gt;input('first_name');
        //FCM api URL
        $url = 'https://fcm.googleapis.com/fcm/send';
        //api_key available in Firebase Console -&gt; Project Settings -&gt; CLOUD MESSAGING -&gt; Server key
        $server_key = 'AIzaSyA1RyuAGGPASh_flFCwiyd9ZHEMYlhQOho';
     $target = "r_token";
        $fields = array();
        $fields['data'] = $first_name;
        if(is_array($target)){
          $fields['registration_ids'] = $target;
        }else{
          $fields['to'] = $target;
        }
        //header with content_type api key
        $headers = array(
          'Content-Type:application/json',
          'Authorization:key='.$server_key
        );
  
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));
        $result = curl_exec($ch);
        if ($result === FALSE) {
          die('FCM Send Error: ' . curl_error($ch));
        }
        curl_close($ch);
        return $result;
  </code></pre>
  
  <p>And I am trying to run this code in my controller using laravel 5.2 but I am getting this error:</p>
  
  <pre><code>  FatalErrorException in WebKyoController.php line 52:
     Call to undefined function App\Http\Controllers\curl_init()
  </code></pre>
  
  <p>I have tried : sudo apt-get install php-curl and apache restart but still I am getting error. I just want to know what do I need to do. </p>