php重定向的三种方法分享
个人更倾向于header的方法,这样页面的跳转速度更快点,用户从视觉上不易察觉整页的跳转,而只是局部的变化
一、用HTTP头信息
也就是用PHP的HEADER函数。PHP里的HEADER函数的作用就是向浏览器发出由HTTP协议规定的本来应该通过WEB服务器的控制指令,例如: 声明返回信息的类型("Context-type: xxx/xxx"),页面的属性("No cache", "Expire")等等。
用HTTP头信息重定向到另外一个页面的方法如下:
代码如下:
$url = "http://www.jb51.net";
if (isset($url))
{
Header("Location: $url");
}
?>
注意一下:"Localtion:"后面有一个空格,不加有时也可以,但为了正确性还是加上为好。
二、用HTML标记
用HTML标记,就是用META的REFRESH标记,举例如下:
代码如下:
$url = "http://www.jb51.net";
if (!isset($url))
{
exit('没有要跳转的地址呦');
}
?>
注意一下:其中content="5; url='http://www.jb51.net' ",表示跳转的地址以及5秒后执行。
三、用脚本来实现
代码如下:
php
$url="http://www.jb51.net";
echo "";
?>
不过,我个人更倾向于header的方法,这样页面的跳转速度更快点,用户从视觉上不易察觉整页的跳转,而只是局部的变化!

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