例1，在查询字符串中传递字符串值
<html>
<body>
<div align="center">
<p>Click a link to move to a new page:</p>
<a href="index.php?page=content1.html">Content 1</a><br />
<a href="index.php?page=content2.html">Content 2</a><br />
<a href="index.php?page=content3.html">Content 3</a><br />
<?php
$page = trim (urldecode (stripslashes ($_GET['page'])));
if (isset ($page) && $page != ""){
if (is_file ($page)){
require_once ($page);
} else {
echo "<p>很抱歉，您请求的页面不存在。</p>";
}
}
?>
</div>
</body>
</html>
例2，在查询字符串中传递数值
<html>
<head>
<title>查询字符串传递数值-www.jb200.com</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
</head>
<body>
<div align="center">
<p>Click a link to change the text color of the verbiage below:</p>
<a href="index.php?color=1">Green</a><br />
<a href="index.php?color=2">Red</a><br />
<a href="index.php?color=3">Blue</a><br />
<a href="index.php">重置信息</a>
<?php
if (isset ($_GET['color'])){
$color = intval ($_GET['color']);
} else {
$color = "";
}
if ($color == 1){
$fontcolor = "00FF00";
} elseif ($color == 2){
$fontcolor = "FF0000";
} elseif ($color == 3){
$fontcolor = "0000FF";
} else {
$fontcolor = "000000";
}
?><p style="color: #<?php echo $fontcolor; ?>; font-weight: bold;">欢迎访问脚本学堂网站！</p><?php
?>
</div>
</body>
</html>