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How to submit a contact form with Google recaptcha v2 and PHP with a Boostrap success alert

I have a contact form on a website, and I am trying to submit the form using Google recaptcha v2, (select the boxes which have a certain image in them). At the moment, the form successfully sends and is received exactly as I want it to; however, I want to create a 'success' alert using Bootstrap, but for some reason this is not working.
If you take a look at the last part of my PHP file I have the following code snippet:
if($responseKeys["success"]) {
mail($to,$email_subject,$email_body,$headers);
} else {
echo '<h2>This has been unsuccessful according to our security checks</h2>';
}
And the 'mail' command seems to work. But anything else I try to put in there, for example
echo '<h2>success!</h2>'
for example, it doesn't get rendered. Ideally, upon a success submit I would like the following to take place:
The form to refresh to blank
A success alert using Bootstrap show at the top of the page
But I am having trouble implementing these.
Here is the entire PHP file:
<?php
$Fname = $_POST['Fname'];
$Lname = $_POST['Lname'];
$email = $_POST['email'];
$number = $_POST['number'];
$company = $_POST['company'];
$message = $_POST['message'];
$email_from = "Your website";
$email_subject = "You have a new submission form from Your Website";
$email_body = "First Name: $Fname.\n".
"Last Name: $Lname.\n".
"Email Address: $email.\n".
"Telephone Number: $number.\n".
"Company Name: $company.\n".
"Message: $message.\n";
$to = "hello#yourwebsite.co.uk";
$headers = "From: $email_from \r\n";
$headers .= "Reply-To: $email \r\n";
$captcha;
if(isset($_POST['email'])){
$email=$_POST['email'];
}
if(isset($_POST['message'])){
$message=$_POST['message'];
}
if(isset($_POST['g-recaptcha-response'])){
$captcha=$_POST['g-recaptcha-response'];
}
if(!$captcha){
echo '<h2>Please check the "I am not a robot" checkbox"</h2>';
exit;
}
$secretKey = 'somesecretlettersandnumbers';
$ip = $_SERVER['REMOTE_ADDR'];
// post request to the server
$url = 'https://www.google.com/recaptcha/api/siteverify?secret=' . urlencode($secretKey) . '&response=' . urlencode($captcha);
$response = file_get_contents($url);
$responseKeys = json_decode($response, true);
// should return JSON with success as true
if($responseKeys["success"]) {
mail($to,$email_subject,$email_body,$headers);
} else {
echo '<h2>This has been unsuccessful according to our security checks</h2>';
}
?>
And here is the HTML form:
<form action="contact.php" id="contact-form" method="POST" role="form">
<div class="row">
<div class="col">
<div class="form-group">
<label for="form_name">First Name*</label>
<input id="form_name" type="text" class="form-control" name="Fname" placeholder="David" required data-error='Please fill in your first name'>
<div class="help-block with-errors"></div>
</div>
</div>
<div class="col">
<div class="form-group">
<label for="form_lastname">Last name*</label>
<input id="form_lastname" type="text" class="form-control" name="Lname" placeholder="Beckham" required data-error="Please fill in your last name">
<div class="help-block with-errors"></div>
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group">
<label for="form_email">Email address*</label>
<input id="form_email" type="email" class="form-control" name="email" placeholder="becks#example.com" required data-error="Please provide your email address">
<div class="help-block with-errors"></div>
</div>
</div>
<div class="col">
<div class="form-group">
<label for="form_number">Contact number*</label>
<input id="form_number" type="number" class="form-control" name="number" placeholder="01234567890" required data-error="Please provide a contact number">
<div class="help-block with-errors"></div>
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group">
<label for="form_company">Your company name</label>
<input id="form_company" type="text" class="form-control" name="company" placeholder="Ex-footballers r us">
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="form-group">
<label for="form_message">Your message*</label>
<textarea id="form_message" class="form-control" name="message" cols="30" rows="10" placeholder="Here's my message" required></textarea>
<div class="help-block with-errors"></div>
</div>
</div>
</div>
<div class="row">
<div class="col">
<div class="g-recaptcha" data-sitekey="datasitekeynumbersandletters"></div>
</div>
</div>
<div class="row">
<div class="col">
<input type="submit" class="btn btn-outline-brand btn-block" name="submit" value="Send enquiry">
</div>
</div>
</form>
I have tried following this tutorial:
Bootstrap success alert upon form submition via javascript
Edited to add the only JS I have for this file:
<script src="https://www.google.com/recaptcha/api.js" async defer></script>
without success.
Thank you in advance

After form submit redirect back to page and show a modal

I'll try to explain this as best as possible.
I have a form that on submit actions on email.php:
<form data-toggle="validator" role="form" method="POST" action="email.php">
<div class="row">
<!-- Full Name -->
<div class="form-group col-lg-4">
<label for="inputName" class="control-label">Name</label>
<input type="text" class="form-control" name="inputName" id="inputName" required>
</div>
<!-- email -->
<div class="form-group col-lg-4">
<label for="inputEmail" class="control-label">Email</label>
<input type="email" class="form-control" name="inputEmail" id="inputEmail" data-error="Incorrect Email Format" required>
</div>
<!-- phone number -->
<div class="form-group col-lg-4">
<label for="inputTel" class="control-label">Phone Number</label>
<input type="text" pattern="(?:\(\d{3}\)|\d{3})[- ]?\d{3}[- ]?\d{4}" name="inputTel" id="inputTel" data-minlength="10" maxlength="15" class="form-control" placeholder="123-456-7890" data-error="(123)-456-7890 | 1234567890 | 123-456-7890">
</div>
<!-- message -->
<div class="form-group col-lg-12">
<label for="content" class="control-label">Message</label>
<textarea name="content" id="content" class="form-control" rows="6" data-minlength="5" data-error="Message Must be longer"></textarea>
</div>
<!-- button -->
<div class="form-group col-lg-12">
<button type="submit" class="btn btn-default">Submit</button>
</div>
</div>
</form>
After the form is successfully processed in email.php, I want it to go back to the page the form is located on and show the "thank you" modal I created
currently I have in email.php (after validation):
echo "<script>
$(window).load(function(){
$('#myModal').modal('show');
});
window.location.href="Websitename";
</script>";
This does not work. What happens is the page just gets redirected but does not display the modal.
Can anyone please provide me any assistance?

I think the problem is in
window.location.href="Websitename";
When browser see this line , she will automatically locate the browser which means new request immediately made.
Let me explain :
Your form send request to email.php -----> sends response as a javascript --> javascript request to "website name".
In order to correct this issue , you should put window.location.href inside timeout function and that timeout triggered after window.load .
Please check :
echo "<script>
function deferredFunction(){
window.location.href="Websitename";
}
$(window).load(function(){
$('#myModal').modal('show');
setTimeout(deferredFunction,5000);
});
</script>";
Hope Helps!!

Error message in contact form

I have created a contact (4 input text) form and I want if user doesn't text in anyone of input a text message will appear above each input.
Contact From:
<form class="form-horizontal" method="post" action="#" name="form" onsubmit="return validation();">
<fieldset>
<div><h2 style="font-family: Myriad Pro;color:#7f8c8c">form</h2></div>
<div class="form-group">
<div class="col-sm-8">
<input id="fname" name="name" type="text" placeholder="Όνομα" class="form-control">
<div id="error1" style="color:#e8645a"></div>
</div>
</div>
<div class="form-group">
<div class="col-sm-8">
<input id="lname" name="surname" type="text" placeholder="Επώνυμο" class="form-control">
<div id="error2" style="color:#e8645a"></div>
</div>
</div>
<div class="form-group">
<div class="col-sm-8 ">
<input id="email" name="email" type="email" placeholder="E-mail" class="form-control">
<div id="error3" style="color:#e8645a"></div>
</div>
</div>
<div class="form-group">
<div class="col-sm-10 ">
<textarea id="message" name="message" type="text" placeholder="Το σχόλιο σας.." columns="7" rows="7" class="form-control" style="background-color:#e5e6e6;" required=""></textarea>
<div id="error4" style="color:#e8645a"></div>
</div>
</div>
<div class="form-group">
<div class="col-sm-3 text-center">
<button type="submit" class="btn btn-primary btn-block" id="label" >SEND</button>
</div>
</div>
</fieldset>
</form>
And the script I use:
function validation(){
if (document.form.name.value == "") {
document.getElementById('error1').innerHTML="*Error Msg1 ";
}else if (document.form.surname.value == "") {
document.getElementById('error2').innerHTML="*Error Msg2 ";
}else if (document.form.email.value == "") {
document.getElementById('error3').innerHTML="*Error Msg3 ";
}else if (document.form.message.value == "") {
document.getElementById('error4').innerHTML="*Error Msg4 ";
}
return false;
}
My issue is that if for example the user doesn't fill his name(error message displayed below the text field) BUT then if he text his name the error message IS still displayed.How can I solve this?
There is an example here: Fiddle

I would suggest that you clear the error message at the start of the validation again:
function validation(){
document.getElementById('error1').innerHTML=""
document.getElementById('error2').innerHTML=""
document.getElementById('error3').innerHTML=""
document.getElementById('error4').innerHTML=""
//Your validation code below:
...
}
This way whenever the input validates, all of the error messages will be cleared and evaluated again.
You might want to consider storing the labels at the start of the function in a field so you have easy access to them later. This should help with readability as well. For example:
function validation(){
var errorMessage1 = document.getElementById('error1');
//Access the label using your new variable:
errorMessage1.innerHTML = "Your value here"
...

On keyup event lets try resetting the error message
document.form.name.addEventListener("keyup", function(){
document.getElementById('error1').innerHTML = '';
});

How to display the values passing using ajax in another php file?

I have written a code to pass values from a form using ajax but the values passed to another php page is not getting displayed there. I want to display the values passed in email.php file and send it as a mail to a email-id.
My script :
$(function() {
$('#send_message').on('click', function(e) {
var name = $('#exampleInputName1').val();
var email = $('#exampleInputEmail1').val();
var tel = $('#exampleInputTelephone1').val();
var cn = $('#exampleInputCountry1').val();
var message = $('#exampleInputMessage1').val();
e.preventDefault();
$.ajax({
type: 'post',
url: 'php/email.php',
data: {
name: name,
email: email,
tel: tel,
cn: cn,
message: message
},
success: function(data) {
alert(message);
}
});
});
});
html page:
<form name="contactForm1" id='contact_form1' method="post" action='php/email.php'>
<div class="form-inline">
<div class="form-group col-sm-12 padd">
<input type="text" class="form-control" name="name" id="exampleInputName1" placeholder="name">
</div>
<div class="form-group col-sm-12 padd">
<input type="email" class="form-control" name="email" id="exampleInputEmail1" placeholder="email address">
</div>
<div class="form-group col-sm-12 padd">
<input type="text" class="form-control" name="telephone" id="exampleInputTelephone1" placeholder="phone">
</div>
<div class="form-group col-sm-12 padd">
<input type="text" class="form-control" name="Country" id="exampleInputCountry1" placeholder="Country">
</div>
<div class="form-group col-sm-12 padd">
<textarea class="form-control" name="message" rows="3" id="exampleInputMessage1" placeholder="message"></textarea>
</div>
</div>
<div class="form-group col-xs-12 padd">
<div id='mail_success' class='success' style="display:none;">Your message has been sent successfully.
</div>
<!-- success message -->
<div id='mail_fail' class='error' style="display:none;">Sorry, error occured this time sending your message.
</div>
<!-- error message -->
</div>
<div class="form-group col-xs-8 padd" id="recaptcha2"></div>
<div class="form-group col-sm-4 padd" id='submit'>
<input type="submit" id='send_message' name="sendus" class="btn btn-lg costom-btn" value="send">
</div>
</form>
email.php
<?php
$temp = $_POST['name'];
echo $temp;
?>
Can anyone suggest how to do this ?

alert box in PHP and navigation to another page

I am using javascript to check whether username and password are not empty. If one of these is empty, javascript alert is displayed and PHP script should not work, that is username and password validation should not occur and login page should be displayed once again. Is there any simple code to do this?
Nobody need to build whole form. I have already build login form and PHP script for its validation, I just want to know is there any method or function in PHP to stop script on entering empty username/password and submitting

Try This
Php Code :
<p>
<label for="first">User Name:</label>
<input type="text" name="First Name" id="first" />
</p>
<p>
<label for="last">Password:</label>
<input type="text" name="Last Name" id="last" />
</p>
<input type="submit" name="Submit" id="button2" value="Submit" onClick="javascript:verify()"/>
JavaScript Code :
function verify() {
if (document.getElementById('first').value=="") {
alert("Please Enter Your Name");
return false;
}
else if (document.getElementById('last').value=="") {
alert("Please Enter Your Password");
return false;
}
else {
document.form.submit();
}
}
Working Model : http://jsfiddle.net/NWWL4/24/

It took me awhile to get this right. I have my form in my html index
page. On a closed question here, I read this couldn't be done.
This php works VERY well with my form.
It generates a Javascript alert for good and bad results and
links back to the index page in either instance.
If you look at the 2nd echo, you'll see where you can redirect to
another page. I just loaded same page to clear form.
If you want to see the ccs, just ask.
PHP:
<?php
if(isset($_POST['submit'])) {
$to = "admin#blahblah.com";
$name_field = $_POST['name'];
$email_field = $_POST['email'];
$subject_field = $_POST['subject'];
$message = $_POST['message'];
$body = "From: $name_field\n E-Mail: $email_field:\n Subject: $subject_field\n Message: $message\n";
}
if(empty($name_field) || empty($email_field) || empty($subject_field) || empty($message)) {
echo '<script type="text/javascript">alert("There is a problem, please check the fields");window.history.go(-1);</script>';
}
else {
if(mail($to, $subject_field, $body)) {
echo '<script type="text/javascript">alert("Message successfully sent");window.location = "https://www.blahblah.com/";</script>';
}}
exit;
?>
html:
<div class="clear"></div>
<div class="container">
<div class="row">
<div class="col-md-3">
<form role="form" action="php\mailer.php" method="post" id="form">
<div class="form-group">
<input name="name" type="text" class="form-control" id="name" placeholder="Your Name" maxlength="30">
</div>
<div class="form-group">
<input name="email" type="text" class="form-control" id="email" placeholder="Your Email" maxlength="30">
</div>
<div class="form-group">
<input name="subject" type="text" class="form-control" id="subject" placeholder="Your Subject" maxlength="40">
</div>
<div><input type="submit" name="submit" class="btn btn-primary" value="Send Message"></input></div>
</div>
<div class="col-md-9">
<div class="txtarea">
<textarea name="message" rows="10" class="form-control" id="message"></textarea>
</form>
<div class="clear"></div>
<div class="col-lg-12" style="text-align:center">
<a class="btn btn-large btn-contact-link" href="#blahblah_home">Home</a>