PHP代码
<?
if ($site != "") :
header("Location: http://$site");
exit;
else :
?>
<html>
<head>
<title></title>
</head>
<body>
<?
$favsites = array ("www.oschina.net","www.google.com","www.csdn.net","www.php.com");
?>
<form action = "index.php" method="post">
<select name="site">
<option value = "">Choose a site:
<?
$x = 0;
while ( $x < sizeof ($favsites) ) :
print "<option value='$favsites[$x]'>$favsites[$x]";
$x++;
endwhile;
?>
</select>
<input type="submit" value="go!">
</form>
<?
endif;
?>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
