title: SMPP Receiver not Supporting Unicode Text
body: <p>I am using SMPP Receiver API to get the messages from specific MSISDN. I am getting the English text correctly. But the Dari and Pashto text is not in same format. It shows output like below : 
  <br/><strong>/</strong>  <br/><strong>'2(�</strong>  <br/> <strong>/'HFD/1</strong> <br/>
  <br/>My Code is : </p>
  
  <pre><code>ob_start();
  require_once "smpp.php";//SMPP protocol
  //connect to the smpp server
  $tx=new SMPP('IP',PORT);
  //bind the receiver
  $tx-&gt;system_type="NUll";
  $tx-&gt;addr_npi=0;
  $tx-&gt;bindReceiver("username","password");
  do
  {
  //read incoming sms
    if($sms=$tx-&gt;readSMS())
    {
      print_r($sms);
    }
  }while($sms);
  </code></pre>
  
  <p>And smpp.php is at : </p>
  
  <pre><code>http://121.100.50.58/apps/smpp/
  </code></pre>
  
  <p>How I can get the correct Dari and Pashto Language Message text? </p>