What are the best practices for configuring PHP to ensure compatibility with different versions?

To ensure compatibility with different PHP versions, it is best practice to use version-specific configuration settings in your PHP code. This can include checking the PHP version at runtime and adjusting settings accordingly, as well as using feature detection to handle differences between versions. By implementing these best practices, you can ensure that your PHP code runs smoothly across various PHP versions.

// Check PHP version and set configuration settings accordingly
if (version_compare(PHP_VERSION, '7.0.0') >= 0) {
    // PHP 7.0+ specific settings
    ini_set('error_reporting', E_ALL);
    ini_set('display_errors', 1);
} else {
    // PHP 5.x specific settings
    ini_set('error_reporting', E_ALL);
    ini_set('display_errors', 'On');
}