<form action="demo_form.php" method="get">
Choose your favorite subject:
<button name="subject" type="submit" value="html">HTML</button>
<button name="subject" type="submit" value="css">CSS</button>
<button name="subject" type="submit" value="javascript">JavaScript</button>
<button name="subject" type="submit" value="jquery">jQuery</button>
</form>
<?php
switch($_REQUEST['subject']) {
case 'html': // Action for HTML here
break;
case 'css': // Action for CSS here
break;
case 'javascript': // Action for JavaScript here
break;
case 'jquery': // Action for jQuery here
break;
}
?>