探讨PHP页面跳转几种实现技巧
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 [,inthttp_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lamp兄弟连官方论坛
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//重定向浏览器 header( "Location: http://bbs.lampbrother.net" ); //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
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$url = "http://bbs.lampbrother.net" ; echo " echo "window.location.href='$url'" ; echo "" ; ?> |
,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LAMP兄弟连官方论坛。
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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bbs.lampbrother.net。
1 2 3 4 5 6 7 8 9 | php $ url = "http://bbs.lampbrother.net" ; ?>
"> head >
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。
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$url = "http://bbs.lampbrother.net" ; echo " echo "window.location.href='$url'" ; echo "" ; ?> |
echo ‘aaaa’;
<?php $url = "http://bbs.lampbrother.net"; echo "<script language='javascript' type='text/javascript'>"; echo "window.location.href='$url'"; echo "</script>";?>

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