To use the php web form you can follow the following examples
Exemple submit to $_SERVER['PHP_SELF'] page test.php
<html>
<head>
<title>form method</title>
</head>
<body>
<?php
if($_SERVER["REQUEST_METHOD"]=="POST"){
$country = $_POST["country"];
echo $country;
}
?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<table border="1" align="center">
<tr>
<td>Country</td>
<td>
<Selct name="country">
<option value="Honda">Honda</option>
<option value="Yamaha">Yamaha</option>
</select>
</td>
</tr>
</table">
</form>
</body>
</html>
Exemple submit to page form test.php and action page handle_test.php
<html>
<head>
<title>form method</title>
</head>
<body>
<form method="post" action="handle_test.php">
<table border="1" align="center">
<tr>
<td>Country</td>
<td>
<Selct name="country">
<option value="Honda">Honda</option>
<option value="Yamaha">Yamaha</option>
</select>
</td>
</tr>
</table">
</form>
</body>
</html>
page action handle_test.php
<?php
if($_SERVER["REQUEST_METHOD"]=="POST"){
$country = $_POST["country"];
echo $country;
}
?>