How to use CentOS as a server in PHP development

In PHP development, CentOS is a commonly used Linux operating system. CentOS provides rich functions and reliable stability, and is particularly suitable as a web server operating system. In the following article, we will introduce how to use CentOS as a PHP development server.

Installing CentOS
First, we need to install the CentOS server. Download the latest version of the CentOS software package from the CentOS official website, and then select "Web Server" as the software package to be installed during the installation process.

Installing LAMP
LAMP (Linux, Apache, MySQL, and PHP) is a collection of commonly used web server software, and they can all be used on CentOS. Installing LAMP on CentOS can get you started quickly with web application and website development.

Here are the steps on how to install LAMP on CentOS:

1. Install Apache:
   On CentOS, the default web server is Apache, so you only need to use the following command Install it:
   yum -y install httpd
   Start Apache:
   systemctl start httpd.service
   Set Apache to start automatically:
   systemctl enable httpd.service
2. Install MySQL:
   MySQL is a popular open source relational database management system. You can install it on CentOS using the following command:
   yum -y install mariadb-server mariadb
   Start MySQL:
   systemctl start mariadb
   Set MySQL to start automatically:
   systemctl enable mariadb
   Configure MySQL:
   mysql_secure_installation
   Follow the prompts, set a root password for MySQL, then delete anonymous users, disable remote root user login, etc. .
3. Install PHP:
   PHP is an open source server-side scripting language. You can install it on CentOS using the following command:
   yum -y install php php-mysql
   After the installation is complete , restart Apache:
   systemctl restart httpd.service

Install PHP extensions
If you need to use specific PHP extensions, then you need to install them manually. Here are the steps on how to install two commonly used PHP extensions:

1. Install php-gd:
   Install php-gd using the following command:
   yum -y install php-gd
   After installation, restart the Apache service:
   systemctl restart httpd.service
2. Install php-mbstring:
   Use the following command to install php-mbstring:
   yum -y install php-mbstring
   After installation, restart the Apache service:
   systemctl restart httpd.service

Configure virtual host
Virtual host is a technology that assigns multiple websites or domain names to the same server. Configuring virtual hosting on CentOS allows you to host multiple websites or applications on the same server.

Here are the steps on how to configure a virtual host on CentOS:

1. Create a new directory to store the virtual host files:
   mkdir /var/www/example.com /public_html/
2. Create a new virtual host file:
   nano /etc/httpd/conf.d/example.com.conf
   In the file, add the following content:
   < ;VirtualHost *:80>
   ServerAdmin webmaster@example.com
   ServerName example.com
   ServerAlias ​​www.example.com
   DocumentRoot /var/www/example.com/public_html/
   ErrorLog /var/www/example.com/error.log
   CustomLog /var/www/example.com/requests.log combined
   
3. Enable virtual host file:
   systemctl restart httpd.service

Enter your host name or domain name in the browser to access your virtual host.

Summary
Using CentOS as a PHP development server can provide good reliability and performance for your web applications and websites. After you install CentOS and LAMP, you can install the required PHP extensions and set up a virtual host to host multiple websites or applications on the same server.

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