Mobile verification for signer SMS issue

public function buildPackage($application_id)

	{



		$application = Application::find($application_id);

		$title 		 = $application->entity_name.' - '.date('d-m-Y');


		$roles 		 = array();

		$i = 1;

		//directors signers  (ID: Signer1 & Signer2)

		if(!empty($application->directors)){

			foreach (unserialize($application->directors) as $key => $value) {

				if(!empty($value['email'])){

					if(isset($value['mobile'])){
						$auth = array( 'challenges' => array(array('question' => $value['mobile'])),  'scheme' => 'SMS' );
					}else{
						$auth = array( 'challenges' => array(),  'scheme' => 'NONE' );
					}


	                $roles[] = array(

	                                'id' => 'Signer'.$i,

	                                'type' => 'SIGNER',

	                                'signers' => array(

	                                    array(

	                                    	'auth' 		=> $auth,

	                                        'email' 	=> trim($value['email']),

	                                        'firstName' => trim($value['f_name']),

	                                        'lastName' 	=> trim($value['l_name']),

	                                        'id' 		=> 'Signer'.$i,

	                                    )

	                                ) ,

	                            );

	                $i++;

	            }

			}

		}

		//senders notification alert users
		if(!empty(Auth::user()->company->doc_alert_mail)){
			
			$alert_emails = explode(',', Auth::user()->company->doc_alert_mail);

       		foreach ($alert_emails as $key => $value) {

       			//if there is supplier email skip as already added
		        if(Auth::user()->email == trim($value)){
		            continue;
		        }

		        //get email username
		        $email_explode = explode('@', $value);

       			$roles[] = array(

	                'id' => 'Sender'.$key,

	                'type' => 'SIGNER',

	                'signers' => array(

	                    array(

	                        'email' 	=> $value,

	                        'firstName' => $email_explode[0],

	                        'lastName' 	=> '.',

	                        'id' => 'Sender'.$key,

	                    )

	                ) ,

	            );
       		}
		}




		$build = array(
			'autocomplete' => true,

			'type' 	   => 'PACKAGE',

			'status'   => 'DRAFT',

			'roles'    => $roles,

			'name' 	   => $title,

		);



		$packageJSON = json_encode($build);
		$packageId = json_decode($this->sendRequest($this->packageAppend, $packageJSON, NULL, NULL), true);
		return $packageId;

	}