What are some best practices for handling newline characters in PHP strings?

When handling newline characters in PHP strings, it's important to be aware of the different representations of newline characters across different operating systems (e.g., "\n" for Unix-based systems and "\r\n" for Windows). To ensure consistent behavior, it's recommended to use the PHP_EOL constant, which represents the correct newline character for the current platform. This helps in writing platform-independent code that handles newline characters correctly.

// Using PHP_EOL to handle newline characters
$string = "Hello" . PHP_EOL . "World";
echo $string;