INI
The INI format is a simple, human-readable file format used for configuration settings. It consists of key-value pairs grouped into sections.
It is natively supported by PHP, and used internally for the php.ini file.
It is related to the TOML format.
<?php
parse_ini_file('/path/to/php.ini');
parse_ini_string(<<<INI
; This is a comment
# Another comment
[database]
host = localhost
username = root
password = secret
port = 3306
INI);
?>