<?php
// WebAdd account details
$username = 'youremail@address.com';
$hash = 'Your API hash';

// Message details
$numbers = array(917735838811, 917735838811);
$sender = urlencode('WEBADD');
$message = rawurlencode('This is your message');

$numbers = implode(',', $numbers);

// Prepare data for POST request
$data = array('username' => $username, 'hash' => $hash, 'numbers' => $numbers, "sender" => $sender, "message" => $message);

// Send the POST request with cURL
$ch = curl_init('http://sms.webadd.in/api2/send/');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// Process your response here
echo $response;
?>