PHP mail() Sending 2 Emails instead of 1 [closed] - php

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I've got a form I have created that is just a simple form with a text box and submit button. The text box is for an email address that an email will be sent to.
Here's my code:
//Get First Name Value
if($is_logged_id && isset($user_data['FirstName'])) $first_name = $user_data['FirstName'];
//Get Last Name Value
if($is_logged_id && isset($user_data['LastName'])) $last_name = $user_data['LastName'];?>
<?php
//Get Phone Number
if($is_logged_id && isset($user_data['Phones'][0]->Number)) $phone_number = $user_data['Phones'][0]->Number;?>
<?php
//Get Last 4 digits of phone number
$last_four = substr($phone_number, -4);
//Add Phone Number to last name
$ref_code = $last_name . $last_four;
?>
<?php
//if "email" variable is filled out, send email
if (isset($_REQUEST['refemail'])) {
$email_from = $first_name . $last_name . "<" . $user_data['EmailAddress'] . ">";
// Headers
$headers = "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";
$headers .= 'From: ' . $email_from . "\r\n";
//Email information
$refemail = $_REQUEST['refemail'];
$subject = $first_name;
//send email
mail($refemail, $first_name , $refcode , $headers);
//Email response
echo "<p style='padding: 10px;'>Email Response</p>";
}
//if "email" variable is not filled out, display the form
else {
?>
<form method="post">
<label for="refemail" class="control-label col-sm-3 col-md-3 col-xs-12 text-left ">Email Address:</label>
<div class="form-group"></div>
<input name="refemail" type="text" size="50" class="form-control" /><br />
<input type="submit" class="ref-btn" value="Submit" />
</div>
</form>
<?php
}
?>
Everything is working exactly the way I want it to, except it is sending two emails that are exactly the same instead of just one. I've done some searching around and I can't find anything that solves my problem.
I've tried adding the following below the mail() function:
exit("sent");
It still sends two emails.
Is there something wrong with my code or could this be an issue with my host?
Thanks.

Answer 1

I guess the form submit twice, after you refresh the page or you submit the form then refresh.
Here echo "<p style='padding: 10px;'>Email Response</p>";, if refresh, here you will see just one 'Email Response'.
Here is to prevent the refresh submit(Jquery):
$('#form').submit(function(e){
e.preventDefault();
//then do the submit.
});
Or
you can just replace button type for testing
<button type="button">
---------------------------------------------------------
Example of Ajax Post data:
In the form.php:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form method="post" id='form'>
<label for="refemail" class="control-label col-sm-3 col-md-3 col-xs-12 text-left ">Email Address:</label>
<input name="refemail" id='refemail' type="text" size="50" class="form-control" /><br />
<input type="submit" class="ref-btn" value="Submit" />
</form>
<script>
$(function(){
$('#form').submit(function(e){
e.preventDefault();
data = {
refemail: $('#refemail').val(),
};
$.ajax({
type: "POST",
url: './sendemail.php',
dataType: "html",
timeout: 50000,
data: data,
success: function(data) {
alert(data);
},
error: function(request, status, err) {}
});
});
});
</script>
In the sendemail.php:
<?php
if(isset($_REQUEST['refemail'])){
echo $_REQUEST['refemail'];
//here do the send email
}else{
echo 'No email';
}
?>