Easily write PHP static pages_PHP tutorial

As PHP becomes more powerful, more and more friends are paying attention to it. I saw many friends posting in various places asking about the method of PHP static page article system. I have built such a system before, so I will talk about it. Here are some opinions for your reference. Okay, let's review some basic concepts first.

1. PHP scripts and dynamic pages.

PHP script is a server-side script program that can be mixed with HTML files through embedding and other methods, and can also be used in the form of classes, function encapsulation, etc. to process user requests in the form of templates. One way or another, the basics of it are this. The client makes a request for a certain page -----> The WEB server introduces the specified corresponding script for processing -----> The script is loaded into the server -----> PHP parsing specified by the server The script is parsed by the script into HTML language form---->The parsed HTML statement is sent back to the browser in the form of a package. It is not difficult to see from this that after the page is sent to the browser, PHP no longer exists and has been converted and parsed into HTML statements. The client request is a dynamic file. In fact, there is no real file there. PHP parses it into the corresponding page and then sends it back to the browser. This way of handling pages is called "dynamic pages".

2. PHP static page.

Static pages refer to pages that exist on the server side and only contain HTML and JS, CSS and other client-side scripts. The way it is handled is. The client makes a request for a certain page---->WEB server confirms and loads a certain page---->WEB server passes the page back to the browser in the form of a package. From this process, we can compare the dynamic pages and we can see. Dynamic pages need to be parsed by the PHP parser of the WEB server, and usually need to connect to the database and perform database access operations before they can form an HTML language information package; while static pages do not need to be parsed or connected to the database, and can be sent directly, which can greatly Reduce server pressure, improve server load capacity, and greatly improve page opening speed and overall website opening speed. But its disadvantage is that the request cannot be processed dynamically, and the file must actually exist on the server.

3. Templates and template analysis.

The template has not yet been populated with content html files. For example:

temp.html

<ol class="dp-xml">
<li class="alt"><span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>HTML</SPAN><SPAN class=tag>></span></font></strong><span> </span></span></li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>TITLE</SPAN><SPAN class=tag>></span></font></strong><span>{title}</span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>TITLE</SPAN><SPAN class=tag>></span></font></strong><span> </span>
</li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>BODY</SPAN><SPAN class=tag>></span></font></strong><span> </span>
</li>
<li class=""><span>thisisa{file}file'stemplets  </span></li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>BODY</SPAN><SPAN class=tag>></span></font></strong><span> </span>
</li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"></</SPAN><SPAN class=tag-name>HTML</SPAN><SPAN class=tag>></span></font></strong><span> </span>
</li>
</ol>

PHP static page processing:

<ol class="dp-xml">
<li class="alt"><span><span>templetest.php  </span></span></li>
<li class=""><span> </span></li>
<li class="alt">
<span></span><strong><font color="#006699"><span class="tag"><?</SPAN><SPAN class=tag-name>php</SPAN></FONT></STRONG><SPAN> </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>title</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"网页教学网测试模板"</FONT></SPAN><SPAN>;  </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>file</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"Webjxtesttemplet,<br>author：web@webjx.com"</span></font><span>;  </span><li class=""><span> </span></li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">fp</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">fopen</font></span><span>("temp.html","r");  </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">content</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">fread</font></span><span>($fp,filesize("temp.html"));  </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">content.</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">str_replace</font></span><span>("{file}",$file,$content);  </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">content.</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">str_replace</font></span><span>("{title}",$title,$content);  </span>
</li>
<li class="alt"><span> </span></li>
<li class=""><span>echo$content;  </span></li>
<li class="alt">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span> </span>
</li></strong>
</li>
</ol>

Okay, after comparing the advantages and disadvantages of static pages and dynamic pages, now let’s talk about how to use PHP to generate static files.

Generating static pages with PHP does not refer to PHP’s dynamic parsing and outputting HTML pages, but refers to using PHP to create HTML pages. At the same time, because HTML is not writable, if the HTML we create is modified, it needs to be deleted and regenerated. (Of course, you can also choose to use regular rules to modify it, but I personally think that it is faster than deleting and regenerating, which is not worth the gain.)