How can the use of forward slashes or backslashes affect directory creation in PHP?

Using forward slashes or backslashes in directory paths in PHP can affect directory creation as backslashes are used as escape characters in PHP. To avoid any issues, it's recommended to always use forward slashes when specifying directory paths in PHP. This ensures that the paths are interpreted correctly across different operating systems.

// Use forward slashes when specifying directory paths in PHP
$directory = 'path/to/directory';

// Create directory using forward slashes
if (!is_dir($directory)) {
    mkdir($directory, 0777, true);
}