What best practices can be followed to improve the efficiency and readability of PHP code for handling different display scenarios?

To improve the efficiency and readability of PHP code for handling different display scenarios, it is recommended to use conditional statements such as if-else or switch-case to manage different cases. Additionally, separating the display logic from the business logic by using functions or classes can make the code more organized and easier to maintain.

// Example of using if-else statement to handle different display scenarios
if ($displayScenario === 'scenario1') {
    // Display scenario 1 content
} elseif ($displayScenario === 'scenario2') {
    // Display scenario 2 content
} else {
    // Default display scenario content
}