how to change php

PHP is a popular server-side scripting language commonly used for website development. In some cases, you may need to change the PHP configuration. This article will explain how to change the PHP configuration.

1. View the current PHP version

Before you start changing the PHP configuration, you first need to know the current PHP version. You can view it through the following steps:

• Run the php -v command in the command line to display the PHP version.
• Create a file containing the following code in the root directory of the website and open it in the browser: The current PHP version will be output.

2. Locate the php.ini configuration file

Once you know the current PHP version, the next step is to locate the php.ini configuration file. The php.ini file is included in the PHP installation directory.

• Run the php --ini command on the command line to display the location of the php.ini file.
• Create a file containing the following code in the root directory of the website and open it in the browser: , which will output the location of the php.ini file.

3. Change the php.ini configuration file

After finding the php.ini file, you can start changing the PHP configuration.

• Open the php.ini file and search for the settings you want to change in the editor. Each setting has a name and a value.
• Change the values ​​of related settings and save the file.

4. Restart the Web server

After changing the php.ini configuration file, you need to restart the Web server for the changes to take effect.

Run the following command in the command line to restart the web server:

• Apache server: sudo service apache2 restart
• Nginx server: sudo service nginx restart

5. Testing that the changes have taken effect

Once the web server has been restarted, you can test that the changes have taken effect.

You can create a file containing the following content in the root directory of the website and open it in the browser:

echo ini_get('setting_name');
?>

Replace setting_name with the name of the setting you want to test. If the value of this setting has changed, the changed value will be output.

In summary, changing the PHP configuration requires the following steps: check the current PHP version, find the php.ini configuration file, change the php.ini configuration file, restart the web server and test whether the changes take effect. If these steps are unfamiliar to you, it is recommended to back up the php.ini file before proceeding to prevent errors.

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