PHP页面跳转实现的功能就是将网站中一个网页跳转到另一个网页中。对于刚刚学习PHP语言的朋友来说,是必须要掌握的基础方法。
PHP被许多程序员用来开发WEB的首选语言。在实际开发中,网站的各项功能都可以通过PHP语言的编写来满足,比如PHP页面跳转这一方法。
Web系统中,从一个网页跳转到另一个网页,是LAMP项目中最常用的技术之一。页面跳转可能是由于用户单击链接、按钮等引发的,也可能是系统自动产生的。 此处介绍PHP中常用的实现页面自动跳转的方法。
PHP页面跳转一:header()函数
header()函数是PHP中进行页面跳转的一种十分简单的方法。header()函数的主要功能是将HTTP协议标头(header)输出到浏览器。
header()函数的定义如下:
void header (string string [,bool replace [,int http_response_code]])
可选参数replace指明是替换前一条类似标头还是添加一条相同类型的标头,默认为替换。
第二个可选参数http_response_code强制将HTTP相应代码设为指定值。 header函数中Location类型的标头是一种特殊的header调用,常用来实现页面跳转。注意:1.location和“:”号间不能有空格,否则不会跳转。
2.在用header前不能有任何的输出。
3.header后的PHP代码还会被执行。例如,将浏览器重定向到php中文网下载站
< ?php //重定向浏览器 header("Location: http://www.php.cn/xiazai"); //确保重定向后,后续代码不会被执行 exit; ?>
PHP页面跳转二:Meta标签
Meta标签是HTML中负责提供文档元信息的标签,在PHP程序中使用该标签,也可以实现页面跳转。 若定义http-equiv为refresh,则打开该页面时将根据content规定的值在一定时间内跳转到相应页面。
若设置content="秒数;url=网址",则定义了经过多长时间后页面跳转到指定的网址。例如,使用meta标签实现疫苗后页面自动跳转到php中文网下载站
< meta http-equiv="refresh" content="1;url=http://www.php.cn/xiazai">
例如,以下程序meta.php实现在该页面中停留一秒后页面自动跳转到http://www.php.cn/xiazai
< ?php $url = "http://www.php.cn/xiazai"; ?> < html> < head> < meta http-equiv="refresh" content="1; url=< ?php echo $url; ?>"> < /head> < body> 页面只停留一秒…… < /body> < /html>
PHP页面跳转三:JavaScript
例如,此代码可以放在程序中的任何合法位置。
< ?php $url = "http://bbs.lampbrother.net"; echo "< script language='javascript' type='text/javascript'>"; echo "window.location.href='$url'"; echo "< /script>"; ?>
实用例子:
//输出提示,并后退到前一页 echo "<script>alert('你没有权限!');location.href='".$_SERVER["HTTP_REFERER"]."';</script>";
以上就是我们向大家介绍的三种PHP页面跳转实现方法。

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