What resources or documentation can help clarify the usage of backslashes in PHP variables for file paths?

When using backslashes in PHP variables for file paths, it's important to remember that backslashes are escape characters in PHP. To avoid conflicts, it's recommended to use forward slashes in file paths instead of backslashes. If you need to use backslashes, you can escape them by using double backslashes.

// Using forward slashes in file paths
$file_path = 'path/to/file.txt';

// Using double backslashes to escape backslashes in file paths
$file_path = 'path\\to\\file.txt';