issue is sending sms using php and external class - php

Question

I want to send sms for registration users.
my sms getway provider using SOAP to connect users to api.
this is how code works:
function sendSMS($mobile, $text){
ini_set("soap.wsdl_cache_enabled", "0");
$value = array('MY USER', 'My pass', 'my sms server number', user mobile number, $text, '1');
$url = 'http://mysmsmprovider.com/WebService/V4/BoxService.asmx?wsdl';
$method = 'SendMessage';
$param = array('Username' => "$value[0]",'Password' => "$value[1]",'Number' => "$value[2]",'Mobile' => array("$value[3]"),'Message' => "$value[4]",'Type' => "$value[5]");
define($security,1);
require_once ("connection.php");
$request = new connection($url,$method,$param);
$message = $request->connect();
$request->__destruct();
unset($value,$url,$method,$param,$request);
if ($message == 'Send Successfully'){
return 1;
}else{
return 0;
}
}
now the connection.php file contents:
<?php
if(!defined($security)){
header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
die();
}
class connection{
public $value;
public $method;
public $url;
public $type;
function __construct($url,$method,$value,$type=''){
$this->value = $value;
$this->method = $method;
$this->url = $url;
$this->type = $type;
}
function connect(){
ini_set("soap.wsdl_cache_enabled", "0");
$client = new SoapClient($this->url);
$result = $client->__SoapCall($this->method, array($this->value));
if($this->type == 'object')
return get_object_vars($result);
$merge = $this->method.'Result';
if($result->$merge->string != '')
return $result->$merge->string;
else
return $result->$merge;
}
function __destruct(){
unset($this->value,$this->url,$this->method,$this->type);
}
}
?>
but when i want use function in top i cant! u make request with android and i'm 100% sure that android part is so fine and good.
the problem is php.
i cant send sms using this code in another php class or php file. but i used it before with same codes!
so whats ur suggestion?