What are some best practices for handling string manipulation in PHP to ensure readability and maintainability?

When handling string manipulation in PHP, it is important to follow best practices to ensure readability and maintainability of your code. One way to achieve this is by using built-in PHP functions for common string operations instead of reinventing the wheel. Additionally, breaking down complex string manipulations into smaller, more manageable steps can make your code easier to understand and maintain.

// Example of using built-in PHP functions for string manipulation
$string = "Hello, World!";
$uppercaseString = strtoupper($string);
$reversedString = strrev($string);

echo $uppercaseString . "\n";
echo $reversedString;