Are there any best practices or guidelines to follow when manipulating strings in PHP to ensure efficient and accurate results?

When manipulating strings in PHP, it is important to follow best practices to ensure efficient and accurate results. One common best practice is to use built-in PHP functions for string manipulation instead of reinventing the wheel. Additionally, be mindful of memory usage when working with large strings to avoid performance issues.

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