prev-next post navigation

/**
 * Modified version of the_post_navigation, does the same, but uses different classes and adds arrows.
 *
 * @param  array $args Arguments array. Lets you set the text for the buttons.
 * @return string
 */
function wds_comeback_get_the_posts_navigation( $args = array() ) {

	global $wp_query;

	// Bail if there's only one page.
	if ( 1 === $wp_query->max_num_pages ) {
		return '';
	}

	// Set defaults.
	$defaults = array(
		'prev_text'          => wds_comeback_get_svg( array( 'icon' => 'arrow' ) ) . __( 'Older posts', 'comeback' ),
		'next_text'          => __( 'Newer posts', 'comeback' ) . wds_comeback_get_svg( array( 'icon' => 'arrow' ) ),
		'screen_reader_text' => __( 'Posts navigation', 'comeback' ),
	);

	$args = wp_parse_args( $args, $defaults );

	$navigation = '';
	$next_link = get_previous_posts_link( $args['next_text'] );
	$prev_link = get_next_posts_link( $args['prev_text'] );

	if ( $prev_link ) {
		$navigation .= $prev_link;
	}

	if ( $next_link ) {
		$navigation .= $next_link;
	}

	$navigation = _navigation_markup( $navigation, 'posts-navigation', $args['screen_reader_text'] );

	return $navigation;
}