Detailed explanation of page staticization examples in php

This article mainly shares with you detailed examples of page staticization in php, hoping to help everyone. Let’s first take a look at the difference between static pages and dynamic pages.

The difference between static pages and dynamic pages

1. Advantages and disadvantages of static web pages:

Advantages: fast loading speed

Disadvantages: relatively large maintenance workload And there is no data interaction function

2. Advantages and disadvantages of dynamic web pages:

Advantages: Solving the shortcomings of static web pages

Disadvantages: The efficiency of dynamic web pages is lower than that of static web pages slow.

What is static

Present dynamic data in static html, that is, display the data in the database in html format. The whole process is called staticization (staticization is to generate a corresponding html file for each content in the database)

Benefits of staticization

①Reduce the pressure on the server

②Fast loading speed

③More secure

④More consistent with search engine optimization

Static implementation principle

As long as ## is required for static implementation #Be able to get the content to be output and then write it to the file(The specific directories and file names are very regular)

①Get the output content and write it to the file Medium

②Access trigger

③View results

The common way to achieve staticization in PHP is to use OB cache to achieve

Cache order: obCacheProgram CacheBrowser Cache

OB Cache

<?php
Ob_start();
Echo “100”;
Header(“content-type:text/html;charset=utf8”);

Copy after login

When the code is executed to the fourth line, the OB cache is enabled. When the execution reaches the sixth line, it is the output content. Therefore, it needs to be put into the OB cache first. When execution reaches the ninth line. Put the header into the program cache. When the eleventh line is executed, continue to put the output content into the OB cache. The current page execution is completed. PHP will automatically refresh the contents of the OB cache to the program cache. The content in the program cache is

packaged with the default response header provided by Apache. Finally, Apache responds with the results.

OB Caching Notes:

1. OB cache can be turned on or off manually

2. OB cache is turned on hour. Any output content in PHP is put into the OB cache first. If you encounter header/session/cookie related data, the specific data will be put into the program cache

3. When the page is executed, PHP will automatically refresh the contents of the OB cache into the program cache.

Some of the more important functions in the OB cache

ob_start: Turn on the OB cache

ob_get_contents: Get the contents of the current OB cache

ob_clean: Clear it Contents in the OB cache

ob_end_clean: Clear the contents in the OB cache and close the OB cache

ob_flush: Manually refresh the contents in the OB cache to the program cache

ob_end_flush: Manually refresh the contents of the OB cache to the program cache and close the OB cache

OB cache nesting

When a PHP file uses the ob_start function multiple times, multiple OB cache areas are opened. For multiple OB cache areas, there is a hierarchical relationship between them. But for each OB cache area, they have no influence on each other

OB cache implementation is static

1. Create a test data table and write data

2. Implementation Background update operations. Use OB cache to generate corresponding HTML files for each content

3. Display the data information at the front end

Pseudo-static introduction

When accessing a certain web page, from the URL What you see on the address bar is exactly the same as true static (corresponding static web page files exist on the web server), but essentially there is no corresponding file on the web server but is parsed by dynamic language. This method is pseudo-static. For example, in the TP framework, the .html suffix

behind each address is the role of pseudo-static

. For some web pages, it is not suitable to be truly static. For example, product details page. Data changes frequently. In order to be more in line with search engine optimization, a pseudo-static method is used. Pseudo-static late performance expansion capability is stronger. Later, you can use load balancing, distribution, memory caching and other technologies to improve performance

Pseudo-static implementation

Generally divided into two situations

1. Heavy use of web servers Writing mechanism implementation (apache, Nginx)

2. Implementation through routing of the framework

Summary of true static and pseudo-static

①True static

1. Really generating html files is more efficient on the server

2. Reduces the pressure on PHP and MySQL servers

3. Increases the search engine optimization experience

4 , True static means that there are real html files, which will take up a lot of disk storage

5. For true static, the ability to improve performance is limited

②Pseudo-static

1. Increased search engine optimization experience

2. Strong performance scalability

3. The true static nature is parsed by the PHP engine

Related recommendations:

Detailed explanation of examples of static PHP pages

php caching mechanism to realize page static code sharing

PHP page static implementation code

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