How to integrate infobip SMS API in PHP

Now a days infobip.com SMS API becomes popular due to their supurb service. You can integrate their SMS service with your website using their API. You can get detail instructions here.

php code is here for your reference:

infoBipSMS.php Class:
<?php
class infoBipSMS {
/*************** http://www.infobip.com/messaging/connectivity/apis ************************/
// InfoBip account credentials
private $infobip_username = '';
private $infobip_password = '';

/**
* @var string InfoBip server URI
*
*/
var $nx_uri = 'http://api.infobip.com/api/v3/sendsms/xml';

function infoBipSMS ($infobip_username, $infobip_password) {
$this->infobip_username = $infobip_username;
$this->infobip_password = $infobip_password;
}

/**
* @return: 
Status Vale Description
AUTH_FAILED - 1 Invalid username or password
XML_ERROR - 2 Incorrect XML format
NOT_ENOUGH_CREDITS - 3 Not enough credits in user account
NO_RECIPIENTS - 4 No good recipients
GENERAL_ERROR - 5 Error in processing your request
SEND_OK > 0 Number of recipients to which message was sent
*
*/
function send_sms_infobip($sender_no_with_plus, $recipient_no_with_plus, $sms_body, $msg_id="")
{
if(substr($sender_no_with_plus,0,1)!="+")
 $sender_no_with_plus="+".$sender_no_with_plus;
if(substr($recipient_no_with_plus,0,1)!="+")
 $recipient_no_with_plus="+".$recipient_no_with_plus;
$msg_id=($msg_id=="")?time():$msg_id;
//  BUSYBEE's POST URL 
//$postUrl  = "http://193.105.74.59/api/sendsms/xml";
$postUrl  = "http://api.infobip.com/api/v3/sendsms/xml";

//  XML-formatted data
$infobip_username=$this->infobip_username;
$infobip_password=$this->infobip_password;
$no_of_sms_will_send=ceil(strlen($sms_body)/160);
for($i=0;$i<$no_of_sms_will_send;$i++)
{
$sms_part=substr($sms_body,0,160);
if(strlen($sms_body)>160)
   $sms_body=substr($sms_body,160);
$xmlString = "
<SMS> 
 <authentification> 
<username>$infobip_username</username> 
<password>$infobip_password</password> 
 </authentification> 
 <message> 
<sender>$sender_no_with_plus</sender> 
<text>$sms_part</text> 
<flash></flash>
<type></type> 
<wapurl></wapurl> 
<binary></binary> 
<datacoding></datacoding> 
<esmclass></esmclass> 
<srcton></srcton> 
<srcnpi></srcnpi> 
<destton></destton> 
<destnpi></destnpi> 
<ValidityPeriod>23:59</ValidityPeriod> 
 </message> 
 <recipients> 
<gsm messageId=\"$msg_id\">$recipient_no_with_plus</gsm> 
 </recipients> 
</SMS> ";

//echo $xmlString;
 
//  previously formatted XML data becomes value of "XML" POST variable 
$fields  = "XML=" . urlencode($xmlString); 
 
//  in this example, POST request was made using PHP's CURL 
$ch  = curl_init(); 
curl_setopt($ch,  CURLOPT_URL, $postUrl); 
curl_setopt($ch, CURLOPT_POST, 1); 
curl_setopt($ch, CURLOPT_POSTFIELDS,  $fields); 
 
//  response of the POST request 
$response  = curl_exec($ch);
curl_close($ch); 
}

//  write out the response 
return $response;

}

}

And here is send_sms_start.php file:
<form method="post" action="send_sms.php">
  Infobip Username: <input name="username" type="text" value="user-name"><br/>
  Infobip Password: <input name="password" type="text" value="password"><br/><br /><br />

  Sender No: <input name="sender_no" type="text" value="+my-sender-no"><br/>
  Recipient No: <input type="text" name="recipient_no" value="+recipient-no"><br/>
  SMS Text: <input type="text" name="sms_body">
  <input type="submit" value="Send SMS">

</form>

Really simple and easy. right? Lets concentrate how to customize for different cases:

1. How to send Same SMS to multiple recipient?
=> in xml portion add as much recipient no as you need in new line <gsm>987654321</gsm> here i use 2 recipient number but you can add as much as you need.

2. Can i send more then 160 character long SMS?
=> Infobip currently don't support SMS with more then 160 character. But using this class (code written earlier of this page) code you will be able to send any length SMS. I actually used a very simple technique (chunk SMS text by 160 character and send separately)

All variables are self explanatory. so you can easily customize those. if you have any further question please feel free to ask by post comment here.

Error and solution:
Error: For a long SMS around 400 character long why i receive only last chunk(divide sms character into 160 character chunk) of this SMS?
Solution: I found that, i have used & in that long 400 character SMS. when i remove & from SMS it works accurately. instead of use & now i use &amp; and works fine. So before send sms text to infobip treat SMS text by htmlspecialchars() function.