一、用HTTP頭資訊
也就是用PHP的HEADER函數。PHP裡的HEADER函數的作用就是向瀏覽器發出由HTTP協議規定的本來應該通過WEB伺服器的控制指令，例如聲明返回資訊的類型("Context-type: xxx/xxx")，頁面的屬性("No cache", "Expire")等等。
用HTTP頭資訊重新導向到另外一個頁面的方法如下：
<?
Header("Location: http://www.baidu.com");
?>
注意一下，"Localtion:"後面有一個空格。
二、用HTML標記
用HTML標記，就是用META的REFRESH標記，舉例如下：
<? if (!isset($url)) exit;?>
<HTML>
<HEAD>
<META HTTP-EQUIV="REFRESH" CONTENT="5; URL=<? echo $url;?>>
</HEAD>
<BODY>
</BODY>
</HTML>
三、用指令碼來實現
舉例如下：
<?
$url="http://www.baidu.com";
echo "<script type="text/javascript">";
echo "location.href=’$url’";
echo "</script>";
?>
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