How can PHP developers effectively handle line breaks in their code without sacrificing readability or functionality?

When handling line breaks in PHP code, developers can use the PHP_EOL constant to ensure cross-platform compatibility without sacrificing readability. This constant represents the correct end-of-line character for the current platform (e.g., "\n" for Unix-based systems and "\r\n" for Windows). By using PHP_EOL instead of hardcoding line breaks, developers can write cleaner and more maintainable code.

// Using PHP_EOL to handle line breaks
$message = "Hello" . PHP_EOL . "World";
echo $message;