Are there best practices for managing different PHP versions using branches in a project?

When managing different PHP versions using branches in a project, it is important to have clear versioning strategies and documentation in place. One common approach is to use feature branches for development, and then merge them into separate branches for each PHP version. This allows for easier maintenance and testing of code across different PHP versions.

// Example of managing different PHP versions using branches in a project

// Define a constant for the PHP version
define('PHP_VERSION', phpversion());

// Check the PHP version and execute code accordingly
if (version_compare(PHP_VERSION, '7.0', '>=')) {
    // Code for PHP 7.0 and above
} else {
    // Code for PHP versions below 7.0
}