研讨PHP页面跳转几种实现技巧

探讨PHP页面跳转几种实现技巧

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。

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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lamp兄弟连官方论坛

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>??php?</span></span></li>
<li class="alt"><span><span>//重定向浏览器?</span></span></li>
<li class="alt"><span><span>header("Location:?http://bbs.
lampbrother.net");?</span></span></li>
<li class="alt"><span><span>//确保重定向后，后续代码不会被执行?</span></span></li>
<li class="alt"><span><span>exit;</span></span></li>
<li class="alt"><span><span class="tag"><strong><span style="color: #006699;">?></span></strong></span><span>??</span></span></li>
</ol>

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LAMP兄弟连官方论坛。

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?</span><span class="tag-name"><strong><span style="color: #006699;">meta</span></strong></span><span>?</span><span class="attribute"><span style="color: #ff0000;">http-equiv</span></span><span>=</span><span class="attribute-value"><span style="color: #0000ff;">"refresh"</span></span><span>?</span></span></li>
<li class="alt"><span><span class="attribute"><span style="color: #ff0000;">content</span></span><span>=</span><span class="attribute-value"><span style="color: #0000ff;">"1;url=http://
bbs.lampbrother.net"</span></span><span class="tag"><strong><span style="color: #006699;">></span></strong></span><span>?</span></span></li>
</ol>

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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。

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>??php? ?</span></span></li>
<li>
<span>$</span><span class="attribute"><span style="color: #ff0000;">url</span></span><span>?=?</span><span class="attribute-value"><span style="color: #0000ff;">"http://bbs.lampbrother.net"</span></span><span>;?</span><span class="tag"><strong><span style="color: #006699;">?></span></strong></span><span>?</span>
</li>
<li class="alt">
<span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?</span><strong><span style="color: #006699;"><span class="tag-name">html</span><span class="tag">></span></span></strong><span>? ?</span>
</li>
<li>
<span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?</span><strong><span style="color: #006699;"><span class="tag-name">head</span><span class="tag">></span></span></strong><span>? ?</span>
</li>
<li class="alt">
<span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?</span><span class="tag-name"><strong><span style="color: #006699;">meta</span></strong></span><span>?</span><span class="attribute"><span style="color: #ff0000;">http-equiv</span></span><span>=</span><span class="attribute-value"><span style="color: #0000ff;">"refresh"</span></span><span>?</span><span class="attribute"><span style="color: #ff0000;">content</span></span><span>="1; ?</span>
</li>
<li>
<span class="attribute"><span style="color: #ff0000;">url</span></span><span>=</span><span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>??php?echo?$url;?</span><span class="tag"><strong><span style="color: #006699;">?></span></strong></span><span>"</span><span class="tag"><strong><span style="color: #006699;">></span></strong></span><span>? ?</span>
</li>
<li class="alt">
<span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?/head</span><span class="tag"><strong><span style="color: #006699;">></span></strong></span><span>? ?</span>
</li>
<li>
<span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?</span><strong><span style="color: #006699;"><span class="tag-name">body</span><span class="tag">></span></span></strong><span>? ?</span>
</li>
<li class="alt"><span>页面只停留一秒……? ?</span></li>
<li>
<span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?/body</span><span class="tag"><strong><span style="color: #006699;">></span></strong></span><span>?</span>
</li>
<li class="alt">
<span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?/html</span><span class="tag"><strong><span style="color: #006699;">></span></strong></span><span>??</span>
</li>
</ol>

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。

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>??php ?</span></span></li>
<li>
<span>$</span><span class="attribute"><span style="color: #ff0000;">url</span></span><span>?=?</span><span class="attribute-value"><span style="color: #0000ff;">"http://bbs.lampbrother.net"</span></span><span>; ?</span>
</li>
<li class="alt">
<span>echo?"</span><span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?</span><span class="tag-name"><strong><span style="color: #006699;">script</span></strong></span><span>?</span><span class="attribute"><span style="color: #ff0000;">language</span></span><span>=</span><span class="attribute-value"><span style="color: #0000ff;">'javascript'</span></span><span>?</span>
</li>
<li class="alt">
<span class="attribute"><span style="color: #ff0000;">type</span></span><span>=</span><span class="attribute-value"><span style="color: #0000ff;">'text/javascript'</span></span><span class="tag"><strong><span style="color: #006699;">></span></strong></span><span>"; ?</span>
</li>
<li>
<span>echo?"</span><span class="attribute"><span style="color: #ff0000;">window.location.href</span></span><span>=</span><span class="attribute-value"><span style="color: #0000ff;">'$url'</span></span><span>"; ?</span>
</li>
<li class="alt">
<span>echo?"</span><span class="tag"><strong><span style="color: #006699;"></span></strong></span><span>?/script</span><span class="tag"><strong><span style="color: #006699;">></span></strong></span><span>"; ?</span>
</li>
<li>
<span class="tag"><strong><span style="color: #006699;">?></span></strong></span><span>?</span>
</li>
</ol>

以上就是我们向大家介绍的三种PHP页面跳转实现方法。