This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

wp_make_theme_file_tree( array $allowed_files )

Makes a tree structure for the Theme Editor’s file list.

Parameters

$allowed_files

(array) (Required) List of theme file paths.

Return

(array) Tree structure for listing theme files.

Source

File: wp-admin/includes/misc.php 

function wp_make_theme_file_tree( $allowed_files ) {
	$tree_list = array();
	foreach ( $allowed_files as $file_name => $absolute_filename ) {
		$list = explode( '/', $file_name );
		$last_dir = &$tree_list;
		foreach ( $list as $dir ) {
			$last_dir =& $last_dir[ $dir ];
		}
		$last_dir = $file_name;
	}
	return $tree_list;
}

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Changelog

Changelog
Version Description
WP-4.9.0 Introduced.