Are there any best practices or recommended libraries in PHP for efficiently handling and manipulating configuration files like INI or XML?

When handling and manipulating configuration files like INI or XML in PHP, it is recommended to use libraries that provide built-in functions for parsing and modifying these file formats. One popular library for handling INI files is the `parse_ini_file()` function, which allows you to easily read and parse INI files. For XML files, the `SimpleXMLElement` class in PHP provides a simple and efficient way to manipulate XML data.

// Example of reading and parsing an INI file using parse_ini_file()
$config = parse_ini_file('config.ini');

// Example of reading and parsing an XML file using SimpleXMLElement
$xml = simplexml_load_file('config.xml');