How to send otp and verify it (in wordpress)?

Send OTP and verify it (in WordPress)

//send otp part

 <div class="container">
 <center>
<h4>Enter Mobile Number</h4>
<form method="post" action="">
<input type="text" class="fullrow"  name="phone" placeholder="Enter phone no." >
<span class="error" style="display:none"></span>

<input class="submit" type="submit" value="Get OTP" name="sotp">
</form>
</center>
 </div>
<span class="success" style=""></span>

<script>
 jQuery(document).ready(function($){
$(".submit").click(function(e){
e.preventDefault();
var number = $(".fullrow").val();
//alert(number);


var data = {
   'action':'otp_send',
   'number':number,
}

  $.post(myajax.ajaxurl,data,function(response){
     $(".success").html(response);
  });
});
 });

//verify otp part

 <div class="container">
 <center>
<h4>Verify OTP</h4>
<form method="post" action="">
<input type="text" class="fullrow1"  name="otp" placeholder="Enter OTP" >
<span class="error" style="display:none"></span>

<input class="submit1" type="submit" value="Submit OTP" name="votp">
</form>
</center>
 </div>
 <span class="success1" style=""></span>

<script>
 jQuery(document).ready(function($){
$(".submit").click(function(e){
e.preventDefault();
var number = $(".fullrow").val();
//alert(number);
var data = {
   'action':'otp_send',
   'number':number,
}

  $.post(myajax.ajaxurl,data,function(response){
     $(".success").html(response);
  });
}); 
 });

// function.php part

function dashboard(){
echo '<script LANGUAGE="JavaScript">window.location.href="'.site_url().'/home-movies/";</script>';
}
function verifyotp(){
echo '<script LANGUAGE="JavaScript">window.location.href="'.site_url().'/verify-otp/";</script>';
}

 function otp_send(){
    $pnumber = $_POST['number'];
global $wpdb;
    $table_name = $wpdb->prefix . "my_plugintable";
    $results = $wpdb->get_results("select * from $table_name where phone=$pnumber ");
$count_result = count($results);
 if($count_result > 0){
//cookie set
$otp = rand(100000, 999999);
  setcookie('otp', $otp, time()+62208000, '/', $_SERVER['HTTP_HOST']);
// Authorisation details.
$username = "sandipstud@gmail.com";
$hash = "274162474fefea10be75c903a636e74fcf1fcab1d3b1751bc5735075346aef5f";
// Config variables. Consult http://api.textlocal.in/docs for more info.
$test = "0";
// Data for text message. This is the text message data.
$sender = "TXTLCL"; // This is who the message appears to be from.
$numbers = "7005974177"; // A single number or a comma-seperated list of numbers
$message = " Yout OTP Is :" . $otp;
// 612 chars or less
// A single number or a comma-seperated list of numbers
$message = urlencode($message);
$data = "username=".$username."&hash=".$hash."&message=".$message."&sender=".$sender."&numbers=".$numbers."&test=".$test;
$ch = curl_init('http://api.textlocal.in/send/?');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch); // This is the result from the API
curl_close($ch);
verifyotp();  
 }
die();
}

  add_action('wp_ajax_nopriv_otp_send','otp_send');

 add_action('wp_ajax_otp_send','otp_send');

function otp_verify(){

    $otp1 = $_POST['otp'];

if($_COOKIE['otp'] == $otp1){

echo "Your OTP is verified!";

dashboard()

} 

else{

echo "You Entered a wrong OTP";

};

die();

}

 add_action('wp_ajax_nopriv_otp_verify','otp_verify');

 add_action('wp_ajax_otp_verify','otp_verify');

//css (if required)

 <style>
 .container{
height:400px;
width:600px;
background:;
padding:50px 50px;
margin:50px auto;
 }
 .fullrow{
width:100%;
 }
 .submit{
width:40%;
margin-top:20px;
 }
 </style>