Below is the code for me
<?php
$config = require('config.php');
?>
<html>
<head>
<title>reCAPTCHA demo</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/1000hz-bootstrap-validator/0.11.9/validator.min.js" ></script>
<script type="text/javascript">
$(document).ready(function(){
$('#demo-form').validator().on('submit', function (e) {
if (e.isDefaultPrevented()) {
console.log("validation failed");
} else {
e.preventDefault();
console.log("validation success");
grecaptcha.execute();
}
});
});
function onSubmit(token){
document.getElementById("demo-form").submit();
};
</script>
</head>
<body>
<div class="container">
<br>
<div class="row">
<div class="col-md-5 col-md-offset-3">
<form id="demo-form" data-toggle="validator" role="form" action="admin.php" method="POST" >
<div class="form-group">
<label for="inputName" class="control-label">Name</label>
<input type="text" class="form-control" id="inputName" placeholder="Geordy James" required/>
</div>
<div id='recaptcha' class="g-recaptcha"
data-sitekey="<?php echo $config['client-key']; ?>"
data-callback="onSubmit"
data-size="invisible"></div>
<button class="btn btn-block btn-primary" type="submit">Submit</button>
</form>
</div>
</div>
</div>
<script src="https://www.google.com/recaptcha/api.js" async defer ></script>
</body>
</html>
Google Invisible reCAPTCHA PHP , https://github.com/geordyjames/google-Invisible-reCAPTCHA.
, .