使用 PHP 包含分隔网站内容-php问题

Using PHP include to separate site content(使用 PHP 包含分隔网站内容)

本文介绍了使用 PHP 包含分隔网站内容的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在寻求有关将站点内容分成逻辑块的最佳实践的建议.我想要一个在整个站点中保持不变的页眉和页脚，这样如果我有几个不同内容的页面，它们都会如下所示——对页眉和页脚所做的更改然后自动更新，而我不必更改每个单独的页面.

<身体><p>页面内容在此</p><?包括'footer.php';?>

header.php 将包含开头的、和静态内容，以及 footer.php 将包含任何额外的静态内容和结束 </html> 标签.所以，我的问题是:这是一个好方法吗?我担心将标签散布在多个文件中是不好的做法.如果是这样，处理这种设计的正确方法是什么?

解决方案

不，你的方法是错误的.
以下是您设计中的主要缺陷:

您假设在每次页面调用时都会调用 header.php.错了.
您假设 header.php 将始终是静态的.那是错误的.
您忘记为页面本身创建模板.

每个人都必须牢记的主要规则:

在所有数据准备就绪之前，不必将任何字符发送到浏览器中.

为什么?

今天是 2011 年.阿贾克斯时代.如果您的代码必须发送 JSON 数据而不是整个 HTML 页面怎么办?
有一种东西叫做HTTP header.有时我们必须发送它们.如果您已经发送了华丽的 HTML 标头，这是不可能的.
它仅适用于 4 页的网站.好的.想象一下，您很幸运，收到了另一个 4 页站点的请求.您将只需要更改模板，而不要更改引擎文件.这真是一个巨大的好处.
假设您要根据页面内容为您的页面制作一个自定义的 </code> 标签.这不是很常见的事情吗?但是如果不使用模板，你就无法做到.</li></ul>因此，您必须拥有一个包含页眉和页脚的通用站点模板，以及每个 php 脚本的专用模板.一个示例布局将是这样的:.1.页面本身.它什么都不输出，但只收集所需的数据并调用模板:<pre><code class='language-php'><?php//包括我们的设置，连接到数据库等.包括目录名($_SERVER['DOCUMENT_ROOT']).'/cfg/settings.php';//获取需要的数据$DATA=dbgetarr("SELECT * FROM links");$pagetitle = "5pyL5Y+L572R56uZ55qE6ZO+5o6l";//等等//然后调用一个模板:$tpl = "links.tpl.php";包括template.php"；?></code></pre>.2.<code>template.php</code> 这是您的主要站点模板，由页眉和页脚组成:<pre><code class='language-php'><html xmlns="http://www.w3.org/1999/xhtml"><头><title>我的网站.<?=$pagetitle?></title></头部><身体><div id="页面"><?php 包含 $tpl ?></div></html></code></pre>.3.最后 <code>links.tpl.php</code> 是实际的页面模板:<pre><code class='language-php'><h2><?=$pagetitle?></h2><ul><?php foreach($DATA as $row): ?><li><a href="<?=$row['link']?>"target="_blank"><?=$row['name']?></a></li><?php endforeach ?><ul></code></pre>简单、干净且易于维护.I'm looking for advice on the best practice for separating site content up into logical blocks. I want a header and footer that are constant throughout the site, so that if I have several pages of different content, they will all look as below — changes made to the header and footer then update automatically without me having to change each individual page.<pre><code class='language-php'><?php include 'header.php'; ?> <body> page content here </body> <? include 'footer.php'; ?> </code></pre>The <code>header.php</code> would contain the opening <code><html></code>, <code><head></code> and static content, and the <code>footer.php</code> would contain any extra static content and the closing <code></html></code> tag. So, my question is: Is this a good approach? I'm worried that spreading the <code><html></code> tags across multiple files is bad practice. If so, what is the right way to approach this kind of design?<div class="h2_lin"> 解决方案 </div>Nope, your approach is wrong. Here are main faults in your design:<ol> <li>You're assuming that header.php would be called on the every page call. That's wrong.</li> <li>You're assuming that header.php will always be static. That's wrong. </li> <li>You forgot to create a template for the page itself.</li> </ol>The main rule everyone have to learn by heart: Not a single character has to be sent into browser, until all data gets ready. Why? <ul> <li>it's 2011 today. AJAX era. What if your code will have to send JSONed data instead of whole HTML page? </li> <li>there is a thing called <code>HTTP header</code>. Sometimes we have to send them. And it's gets impossible if you already have your ornate HTML header sent.</li> <li>it's for just 4-page site. Okay. Imagine you've got lucky and got a request for another 4-page site. You will have to change only templates and don't touch engine files. That's really great benefit.</li> <li>Imagine you're going to make a custom <code><title></code> tag for your pages, based on the page content. Isn't it extremely common thing? But you can't make it without using templates. </li> </ul> So, you have to have one common site template containing header and footer and also dedicated templates for the every php script. An example layout is going to be like this: .1. page itself. it outputs nothing but only gather required data and calls a template:<pre><code class='language-php'><?php //include our settings, connect to database etc. include dirname($_SERVER['DOCUMENT_ROOT']).'/cfg/settings.php'; //getting required data $DATA=dbgetarr("SELECT * FROM links"); $pagetitle = "TGlua3MgdG8gZnJpZW5kIHNpdGVz"; //etc //and then call a template: $tpl = "links.tpl.php"; include "template.php"; ?> </code></pre>.2. <code>template.php</code> which is your main site template, consists of your header and footer:<pre><code class='language-php'><html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>My site. <?=$pagetitle?></title> </head> <body> <div id="page"> <?php include $tpl ?> </div> </body> </html> </code></pre>.3. and finally <code>links.tpl.php</code> is the actual page template:<pre><code class='language-php'><h2><?=$pagetitle?></h2> <ul> <?php foreach($DATA as $row): ?> <li><a href="<?=$row['link']?>" target="_blank"><?=$row['name']?></a></li> <?php endforeach ?> <ul> </code></pre>easy, clean and maintainable. 这篇关于使用 PHP 包含分隔网站内容的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！