<![CDATA[
/* PHP */
$msg = '';
$msgClass='';
if(filter_has_var(INPUT_POST,'submit')){
$name = htmlspecialchars($_POST['name']);
$email = htmlspecialchars($_POST['email']);
$message = htmlspecialchars($_POST['message']);
if(!empty($email) && !empty($name) && !empty($message)){
// Passed
// Check Email
if(filter_var($email, FILTER_VALIDATE_EMAIL)===false){
$msg = 'Please use a valid email';
$msgClass = 'alert-danger';
} else {
//Passed
}
} else{
// Failed
$msg = 'Please fill in all fields';
$msgClass = 'alert-danger';
}
}
/* PHP */
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>PILSOOK LEE</title>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body >
<nav class="navbar navbar-default">
<div class="container">
<div class="navbar-header">
<a class="navbar-brand">FORM CHECK</a>
</div>
</div>
</nav>
<div class="container">
/* PHP */ if($msg != ''): /* PHP */
<div class="alert /* PHP */ echo $msgClass;/* PHP */">
/* PHP */ echo $msg; /* PHP */
/* PHP */ endif; /* PHP */
<form method="post" action="/* PHP */ echo $_SERVER['PHP_SELF']; /* PHP */">
<div class="form-group">
<label>Name</label>
<input type="text" name="name" class="form-control" value="/* PHP */echo isset($_POST['name']) /* PHP */ $name : ''; /* PHP */">
</div>
<div class="form-group">
<label>Email</label>
<input type="text" name="email" class="form-control" value="/* PHP */ echo isset($_POST['email']) /* PHP */ $email : ''; /* PHP */">
</div>
<div class="form-group">
<label>Message</label>
<textarea name="message" class="form-control">/* PHP */ echo isset($_POST['message']) ? $message : ''; /* PHP */</textarea>
</div>
<br>
<button type="submit" name="submit" class="bte bte-primaary">Submit</button>
</form>
</div>
</body>
]]>