get_categories( string|array $args = '' ): array

26function get_categories( $args = '' ) {27	$defaults = array( 'taxonomy' => 'category' );28	$args     = wp_parse_args( $args, $defaults );29 30	/**31	 * Filters the taxonomy used to retrieve terms when calling get_categories().32	 *33	 * @since 2.7.034	 *35	 * @param string $taxonomy Taxonomy to retrieve terms from.36	 * @param array  $args     An array of arguments. See get_terms().37	 */38	$args['taxonomy'] = apply_filters( 'get_categories_taxonomy', $args['taxonomy'], $args );39 40	// Back compat.41	if ( isset( $args['type'] ) && 'link' === $args['type'] ) {42		_deprecated_argument(43			__FUNCTION__,44			'3.0.0',45			sprintf(46				/* translators: 1: "type => link", 2: "taxonomy => link_category" */47				__( '%1$s is deprecated. Use %2$s instead.' ),48				'<code>type => link</code>',49				'<code>taxonomy => link_category</code>'50			)51		);52		$args['taxonomy'] = 'link_category';53	}54 55	$categories = get_terms( $args );56 57	if ( is_wp_error( $categories ) ) {58		$categories = array();59	} else {60		$categories = (array) $categories;61		foreach ( array_keys( $categories ) as $k ) {62			_make_cat_compat( $categories[ $k ] );63		}64	}65 66	return $categories;67}