PHP sample code for sending SMS through the FrontlineCloud API

fsmswebconnection.php

<?php //FILE: sms_api.php 
function sendSMS($number, $message) { 

        $url = "example"; // Set your frontlinesms or frontlinecloud webconnection url here
        $secret = "secret"; // Set the secret here

        $request = array( 
                        'secret' => $secret, 
                        'message' => $message, 
                        'recipients' => array(array( 
                                'type' => 'mobile', 
                                'value' => $number 
                        ))
                );  

        $req = json_encode($request);

        $ch = curl_init( $url );  
        curl_setopt( $ch, CURLOPT_HTTPHEADER, array('Content-Type:application/json')); 
        curl_setopt( $ch, CURLOPT_POST, true );  
        curl_setopt( $ch, CURLOPT_POSTFIELDS, $req );  
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );  
        $result = curl_exec($ch); 
        curl_close($ch);

        return split(',',$result); 
}
?>

<?php //FILE: index.php 
include 'sms_api.php'; 
$number = '+123456789'; 
$text = 'Hi There, how are you?'; 
$sms_api_result = sendSMS($number, $text);

// Check if SMS was sent. The $sms_api_result boolean indicates whether the API call was successful.
// You can replace the code below with custom handling logic
if ($sms_api_result[0] == 'OK') { 
// Ok, SMS received by the API 
        echo 'The SMS was sent.'; 
} 
else { 
// Failure, SMS was not sent 
// In this example we display the response to identify the error 
        print_r($sms_api_result); 
} 
?>

when i click submit, its returning

Array ( [0] => )

please assist

anyone who knows how to sort this problem
Array ( [0] => )
help please

Anyone who managed to sort out the "Array ( [0] => )" error please?

@vaneyck looks like some help is needed on this, maybe someone on the team could have a look?