Detailed introduction to Nginx’s method of verifying successful PHP installation

Nginx is a widely used open source web server software. Its emergence allows us to build high-performance and high-reliability websites more easily. As a popular scripting language, PHP is also an important part of web development. When building an Nginx server, we often need to install and configure PHP to ensure that it can work properly. But how to verify that PHP installation is successful? This article will introduce you in detail how Nginx verifies the successful installation of PHP.

Step 1: Check whether PHP has been installed

Before verifying whether PHP is installed successfully, we must first confirm whether it has been installed. Generally, we can use the following command in the terminal to view:

php -v

If your PHP version is higher than 7.0, then you can use the following command:

php7.0 -v

If the command line displays If you can see the version information of PHP, it means that PHP has been installed successfully. If it doesn't show up, PHP isn't installed yet or it's configured incorrectly. You can start PHP in various ways, such as using php-fpm, php-cgi, etc.

Step 2: Create a PHP test file

Before verifying whether PHP can work properly, we need to create a PHP test file first. You can use a text editor (such as vi, nano, emacs, etc.) to create a file named test.php with the following content:

<?php
phpinfo();
?>

This file will output the details of PHP, if PHP is normal work, you will see some information about PHP version, system environment, etc. in the browser.

Step 3: Start the Nginx server

Before verifying whether PHP is installed successfully, we need to start the Nginx server first. If you have not installed Nginx, you can install it through the following command:

sudo apt-get install nginx

After the installation is complete, you can start the Nginx server through the following command:

sudo systemctl start nginx

If Nginx has run successfully, then Enter the server's IP address or domain name into the browser, and you will see the Nginx welcome page.

Step 4: Verify whether PHP is installed successfully

Now, we need to verify whether PHP has been correctly installed and integrated into Nginx. To do this, we can create a new file called phpinfo.conf and fill it with the following content:

server {
    listen 80 default_server;
    server_name _;
    root /var/www/html;
    index index.php;
    location / {
        try_files $uri $uri/ =404;
    }
    location ~ \.php$ {
        include fastcgi_params;
        fastcgi_pass unix:/run/php/php7.0-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }
}

This file contains a standard Nginx server block and also defines the location of PHP, So that Nginx can handle PHP files correctly.

Now, we need to save this file to the /etc/nginx/sites-available/ directory. Then use the following command to create a link and make it available:

sudo ln -s /etc/nginx/sites-available/phpinfo.conf /etc/nginx/sites-enabled/

Finally, restart the Nginx server so that the latest configuration file takes effect:

sudo systemctl restart nginx

Now, enter the server’s name in the browser IP address or domain name, and then add the "/test.php" string to see the output of the test file. If you can see a detailed list of PHP information, PHP has been installed successfully and integrated into Nginx.

Summary:

This article introduces you how to verify whether PHP under Nginx has been successfully installed and has been correctly integrated into the server. Through the above steps, you can efficiently verify that the server configuration is correct and quickly find where things went wrong. Of course, the above is just a preliminary verification. There are more specific application developments that you need to explore and solve by yourself.

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