The Configuration.php Editor plugin adds a quick-access icon to the main Joomla administrator dashboard for editing the configuration.php file in a modal window using the CodeMirror editor.
Features:
editing the configuration.php file in a modal window directly from the main Joomla administrator dashboard,
using the CodeMirror editor for syntax highlighting,
saving versions of the configuration.php file with the ability to quickly restore them,
saving changes via Ajax without reloading the page,
checking PHP syntax before writing the file,
protection against overwriting the file if it has been modified after the editor was opened,
restricting editing access to users with Super User permissions only.