從<a href=""> link

Question

I'm making a site using divs. I have one across the top with a row of links which I want to change what's in the main window. I would prefer to keep strictly to PHP and HTML and use a full page refresh as I am comfortable with them at current, rather than using an Ajax refresh as I don't have any knowledge of Ajax.

I don't want to use iframes. I thought the best way to do this would be as follows:

<div id="top"> 
<a href="news.html">News</a> 
</div> 
<div id="main"> 
<?php include($page); ?> 
</div> 

What I need is a way of changing the $page variable upon clicking the link. If this means changing the variable and then reloading the page then so be it.

A command following the logic of:

<a href="news.html" action="<?php $page="news.html"; ?>">News</a> 

would be ideal! I thought about using a form, but it seems there should be an easier way.

Answer 1

You can't change a variable, per se. Reloading the page means running the PHP program from scratch. You just have to provide it with different input. From a regular link, that is only possible through the URL.

<a href="foo.php?something=a_value"> 

Data in the query string is accessible via $_GET

echo htmlspecialchars($_GET['something']); 

Answer 2

you could use a GET request on the same page,

<a href="news.html?page=news.html">News</a> 

This will cause a page refresh on click, with the value for the page variable passed to php, and accessible through

$page = $_GET['page'] //at this point, $page will be "news.html" 

Answer 3

If I understood correctly, to change the include on the fly, as you are talking, you need to use AJAX, otherwise you need a full refresh.

Send data back to the server, with a normal link.

<a href="page.php?page=newpage.html">link</a> 

Then you can use the $_GET variable of PHP, which is a array that parse the parameters for a URL page.

Example:

$page = $_GET['page'] 
include $page; 

If you use jQuery, or want to try a easy AJAX method, you can search for jQuery.load()更改PHP變量。

Answer 4

你也可以使用

$page = $_SERVER['PHP_SELF']; 

在PHP腳本的頂部。如果你的頁面是「somepage.php」，上面會輸出

/somepage.php 

作爲$ page的值。

爲了擺脫斜線和.PHP只是使用SUBSTR：

$page = substr($_SERVER['PHP_SELF'],1,-4); 

這將留給你$頁= SomePage的