Complete Code For Getting Multiple Input Checkbox Data Using PHP.
<!DOCTYPE html>
<html>
<head>
<title>How To Implement PHP Code For Swapping Two Numbers</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet">
</head>
<style>
body {
background: black;
}
</style>
<body>
<body>
<div class="container">
<br/><br/>
<div class="text-center">
<h1 id="color" style="color: white;">PHP Code For Swapping Two Numbers</h1>
</div>
<div class="well">
<form action="" method="post" enctype="multipart/form-data">
<h3>Select Languages:</h3>
<label>PHP</label>
<input type="checkbox" name="lang[]" value="PHP"><br><br>
<label>HTML</label>
<input type="checkbox" name="lang[]" value="HTML"><br><br>
<label>JAVASCRIPT</label>
<input type="checkbox" name="lang[]" value="JAVASCRIPT"><br><br>
<input type="submit" value="submit" class="btn btn-success" name="submit">
</form>
<?php
if (isset($_POST['submit'])) {
print_r($_POST['lang']);
}
?>
</div>
</div>
</body>
</html>