


Record of the entire process of building a WordPress blog from scratch on CentOS system, centoswordpress_PHP tutorial
Records of the entire process of building a WordPress blog from scratch on CentOS system, centoswordpress
Overview
I recently bought a server and am planning to set up a personal blog to continuously update my blog,
Environment
- Server operating system: CentOS 7.0
- Blog deployment server: Apache
- Backend language: PHP
- Database: MySql
- Front-end framework: WordPress
Steps
1. Install Apache
Installing Apache is very simple, just enter the following command in the terminal:
sudo yum install httpd
sudo means what to do with the root user, yum install means online installation; then enter yes to confirm the download and installation.
After the installation is complete, we need to start the service:
sudo service httpd start
After starting the server, don’t worry about it yet. You can directly enter the server’s IP address in the browser, and you should be able to see the Apache welcome page.
This page is used to test the operation of the Apache HTTP server after it has been installed………etc.
If your IP address has been bound to a domain name, you can also access it by entering your domain name in the browser. Isn’t it cool? It’s that simple. Let’s continue.
2. Install MySql
Install MySql and start MySql
sudo yum install mysql-server sudo service mysqld start
You can install and start mysql through the above command. When installing mysql, you will be asked for some simple configurations. Enter enter and yes and you will be fine.
3. Install PHP and related PHP components
Install PHP first
sudo yum install php php-mysql
Install PHP related components
yum install php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc
I installed these components first for future use. If you want to know all PHP components, you can use the following command to search:
yum search php-
4. Apache and Mysql services are started by default when booting
Use the following command to choose to start Apache and Mysql at boot:
sudo chkconfig http on sudo chkconfig mysql on
5. Test whether PHP is installed successfully
Create an info.php file:
sudo vim /var/www/html/info.php
Then enter i to enter edit mode and write the following PHP command in the file:
<?php phpinfo(); ?>
Then press the esc key to enter the command mode, press the Shift key and the z key twice to exit the saved file.
Enter the IP address/info.php in the browser, for example: 123.56.183.34/info.php and press Enter to see the PHP information.
6. Download WordPress
You can go to https://wordpress.org/ official website to browse, or download through the following command:
wget http://cn.wordpress.org/wordpress-3.9-zh_CN.zip
7. Decompression
Use unzip to unzip the file:
unzip wordpress-3.8-zh_CN.zip
8. Create a new database in Mysql
mysql -u root -p
Enter the database through the above command, and then enter the password: password
Then create a database called wordpress
create database wordpress;
9. Modify the wp-content.php file
Modify the wp-content.php file as follows,
/** MySQL数据库名:wordpress */ define(‘DB_NAME', ‘wordpress'); /** MySQL数据库用户名 :root*/ define(‘DB_USER', ‘root'); /** MySQL数据库密码 :password*/ define(‘DB_PASSWORD', ‘password'); /** MySQL主机(不用修改) */ define(‘DB_HOST', ‘localhost');
10. Copy the file to the /var/www/html directory
cp -rf wordpress/* /var/www/html/
11. Test
Enter the server’s IP in the browser to view your homepage.

PHP remains a powerful and widely used tool in modern programming, especially in the field of web development. 1) PHP is easy to use and seamlessly integrated with databases, and is the first choice for many developers. 2) It supports dynamic content generation and object-oriented programming, suitable for quickly creating and maintaining websites. 3) PHP's performance can be improved by caching and optimizing database queries, and its extensive community and rich ecosystem make it still important in today's technology stack.

In PHP, weak references are implemented through the WeakReference class and will not prevent the garbage collector from reclaiming objects. Weak references are suitable for scenarios such as caching systems and event listeners. It should be noted that it cannot guarantee the survival of objects and that garbage collection may be delayed.

The \_\_invoke method allows objects to be called like functions. 1. Define the \_\_invoke method so that the object can be called. 2. When using the $obj(...) syntax, PHP will execute the \_\_invoke method. 3. Suitable for scenarios such as logging and calculator, improving code flexibility and readability.

Fibers was introduced in PHP8.1, improving concurrent processing capabilities. 1) Fibers is a lightweight concurrency model similar to coroutines. 2) They allow developers to manually control the execution flow of tasks and are suitable for handling I/O-intensive tasks. 3) Using Fibers can write more efficient and responsive code.

The PHP community provides rich resources and support to help developers grow. 1) Resources include official documentation, tutorials, blogs and open source projects such as Laravel and Symfony. 2) Support can be obtained through StackOverflow, Reddit and Slack channels. 3) Development trends can be learned by following RFC. 4) Integration into the community can be achieved through active participation, contribution to code and learning sharing.

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

PHP is not dying, but constantly adapting and evolving. 1) PHP has undergone multiple version iterations since 1994 to adapt to new technology trends. 2) It is currently widely used in e-commerce, content management systems and other fields. 3) PHP8 introduces JIT compiler and other functions to improve performance and modernization. 4) Use OPcache and follow PSR-12 standards to optimize performance and code quality.

The future of PHP will be achieved by adapting to new technology trends and introducing innovative features: 1) Adapting to cloud computing, containerization and microservice architectures, supporting Docker and Kubernetes; 2) introducing JIT compilers and enumeration types to improve performance and data processing efficiency; 3) Continuously optimize performance and promote best practices.


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