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PHP本身没有一个完全意义上的PHP页面跳转函数,也许Header函数算一个,但是,它只能用于页面的第一行。如果放在PHP页面的最后位置,除非前面的PHP没有输出任何字符,否则,会报错。
下面提供三种PHP自动页面跳转的方法,其一就是使用Header函数,其二则是使用HTML固有标记,当然,这个方法不仅仅可以应用于PHP,同样可以应用于ASP,.Net,以及Jsp中,第三种方法是输出Javascript,利用Js代码,达到PHP页面自动跳转的目的,同样的,这种方法也同样适用于PHP以外的其他语言,只是相应语言代码不同而已。
PHP页面跳转函数一、用HTTP头信息(Header函数)
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: xxxx/xxxx"),页面的属性("No cache", "Expire")等等。
用HTTP头信息使PHP自动跳转到另外一个页面的方法如下:
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<ol class="dp-xml"><li class="alt"><span class="tag"><</span> ?PHP </li><li><span>$</span><span class="attribute">url</span><span> = </span><span class="attribute-value">czbin</span><span>.</span>PHP<span> </span></li><li class="alt"><span>Header("HTTP/1.1 303 See Other"); </span></li><li><span>Header("Location: $url"); </span></li><li class="alt"><span>exit; </span></li><li><span class="tag">?></span><span> </span></li></ol>注意一下,"Localtion:"后面有一个空格。
PHP页面跳转函数二、利用HTML标记(META中的REFRESH属性)
用HTML标记,就是用META的REFRESH标记,举例如下:
<ol class="dp-xml"><li class="alt"><span class="tag"><</span> ?PHP<span> $</span><span class="attribute">url</span><span> = </span><span class="attribute-value">czbin</span><span>.</span>PHP<span>;</span><span>?> </span></li><li><span class="tag"><</span><span> </span><span class="tag-name">HTML</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span> </span><span class="tag-name">HEAD</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span> </span><span class="tag-name">META</span><span> </span><span class="attribute">HTTP-EQUIV</span><span>=</span><span class="attribute-value">"REFRESH"</span><span> <br /></span><span class="attribute">CONTENT</span><span>="10; </span><span class="attribute">URL</span><span>=</span><span class="tag"><</span><span> ? echo $url;</span><span class="tag">?></span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span> /HEAD</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span> </span><span class="tag-name">BODY</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span> /BODY</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span> /HTML</span><span class="tag">></span><span> </span></li></ol>
注:这里的CONTENT="10 的意思是说10秒以后跳转。
PHP页面跳转函数三、用JAVASCRIPT脚本来实现
举例如下:
<ol class="dp-xml"><li class="alt"><span><span class="tag">< ?</span></span>PHP<span><span> </span></span></li><li><span>$</span><span class="attribute">url</span><span>=</span><span class="attribute-value">czbin</span><span>.</span>PHP<span>; </span></li><li class="alt"><span>echo "< !--</span><span class="tag">< </span><span class="tag-name">SCRIPT</span><span> </span><span class="attribute">LANGUAGE</span><span>=</span><span class="attribute-value">"JavaScript"</span><span class="tag">></span><span>"; </span></li><li><span>echo "</span><span class="attribute">location.href</span><span>=</span><span class="attribute-value">'$url'</span><span>"; </span></li><li class="alt"><span>echo "</span><span class="tag">< /</span><span class="tag-name">SCRIPT</span><span class="tag">></span><span>--</span><span class="tag">></span><span>"; </span></li><li><span class="tag">?></span><span> </span></li></ol>
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