multi-dimension.php

<?php

	/**
	 * Create a multidimensional array from supplied array keys.
	 *
	 * Accepts a variable number of parameters that can be strings or arrays of
	 * strings. Each parameter represents another level of nesting.
	 *
	 * Each leaf node is an empty array.
	 *
	 * @param mixed $args,... Variable number of strings or arrays of strings.
	 *
	 * @return array
	 */
	public function nest_array_keys( ...$args ) {
		$keys = (array) array_shift( $args );
		$array = [];

		foreach ( $keys as $key ) {
			$array[ $key ] = call_user_func_array( [ $this, __FUNCTION__ ], $args );
		}

		return $array;
	}