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Techniques for quickly changing the PHP version in a virtual machine
With the continuous development of web development technology, PHP, as a popular back-end programming language, is constantly updated and iterated , different projects may require different versions of PHP to support. In a virtual machine environment, how to quickly and conveniently change the PHP version has become a concern for many developers. This article will introduce some tips and specific code examples to help developers quickly change the PHP version in a virtual machine.
1. Multi-version coexistence
In the virtual machine, we can manage different versions of PHP through multi-version coexistence. Each version of PHP can be installed separately in different directories, and different versions of PHP can be switched through soft links. The following are the specific steps:
Switch different versions of PHP by changing the value of the environment variable PATH. For example, you can switch the PHP version through the following command:
export PATH=/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/local/php7.2/bin
Through the above operations, we can quickly switch the PHP version through the coexistence of multiple versions in the virtual machine.
2. Through Docker container
Another way to quickly change the PHP version is to use a Docker container. Docker is a lightweight container technology that can quickly build and deploy applications. We can quickly switch PHP versions by deploying different versions of PHP in Docker containers. The following are the specific steps:
Install Docker on the local host and pull different versions of PHP images. For example, you can use the following command to pull the PHP 7.2 image:
docker pull php:7.2-fpm
Create and run a PHP container. You can use the following command to quickly create and start a PHP 7.2 container:
docker run -d --name php72 -p 9000:9000 -v /path/to/php72/config:/usr/local/etc/php php:7.2-fpm
Connect to the container through the container name or container ID, and enter the container to operate:
docker exec -it php72 bash
By using Docker containers, we can easily create different versions of PHP environments and quickly switch PHP versions without affecting the local host environment.
Conclusion:
This article introduces two common ways to quickly change the PHP version in a virtual machine, and provides specific operating steps and code examples. Through multi-version coexistence and Docker containers, developers can easily manage different versions of PHP to adapt to the needs of different projects. I hope this article will help developers quickly change the PHP version in a virtual machine.
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