Simple class to mannage SMS sender [ Webservive ]

sms.php

<?php

  //include(dirname(__FILE__) . "path/to/storageEngine.php");   crea una clase para salvar cosas en base de datos, y así guardar registro de los sms


class sms 
{        

        private $smsList;
        private $storageEngine;

 
        public function __construct($recipient = NULL, $content = NULL, $storageEngine = true) //cambia a false si no quieres salvar en DB
        {
                
                $this->smsList = array();

                if($recipient != NULL && $content != NULL)
                  $this->create($recipient, $content);


           

        }

 

        public function create($recipient, $content)  // create a new SMS
        {


                
                $sms = array(
                        "recipient" => $recipient,                        
                        "content" => $this->doHash($content),
                        "type" => "plain/text"
                        );

                if(! array_push($this->smsList, $sms))
                        throw new smsException("Error creating new sms");
                        

                return true;
        }



        private function find($recipient){   // Find a SMS by recipiente number return array with index matches

             $i = 0;
             $matches = array();

             for(; $i < count($this->smsList) ; $i++)
                  if( $recipient === $this->smsList[$i]->recipient)
                           $matches[] = $i;

          if(count($matches) > 0)
               return $matches;
          else
               return false;

        }


        public function copy($recipient){


               if( $index = $this->find($recipient))
                   
                   if(array_push($this->smsList, $this->smsList[$i]))
                        return true;
                   else
                      throw new smsException("Can't copy SMS, unkno error line:51");

                else 
                   throw new smsException("Can't copy SMS, recipient not found");


        }

 
   
 
        
        protected function doHash($content){

                //coding message, this only will decode went the message is sended to recipient (execution time)

                $bytes = strlen($content);
                $chunks = $bytes/3;
                $part1 = substr($content, 0, $chunks);                
                $part2 = substr($content, $chunks, $chunks * 2);
                $part3 = substr($content, ($chunks*2) + 1, $chunks * 3);
                $salt = hash("sha1", md5(time()));

                $content = base64_encode("{$part1}:{$salt}:{$part2}:{$salt}:{$part3}");


                return $content;


        }



 

        public function setContent($recipient, $content)
        {               
                

                if( $index = $this->find($recipient))
                    if($this->smsList[$index[0]]["content"] === $content)
                        throw new smsException("Can't set duplicate content");                        
                     else{
                         
                         $this->smsList[$i]["content"] = $this->doHash($content);
                         return true;

                         }
                else 
                   return false;
          

        }



        public function sendOne($recipient){


                 if( $index = $this->find($recipient))
                      $this->send($this->smsList[$index[0]]);
                else 
                   throw new smsException("Can't send SMS, recipient not found");



        }



        public function sendAll(){

                foreach ($this->smsList as $sms) 
                     $this->send($sms);

        }



        private function send( $sms ){   //recive an array { "recipient" => ?, "content" => ? }


                //write a code to send SMS

        }

 
    
}



$sms = new sms;
$sms->create("+57301707070", "Hola como vas");