MemberPress: Add Shortcode To Output the User’s Subscription Expiration Date

function mepr_sub_expiration_shortcode( $atts = [], $content = null, $tag = '' ) { 

  $sub_expire_html = '';

  if( $atts['membership'] && is_numeric( $atts['membership'] ) ) {

    $date_str = MeprUser::get_user_product_expires_at_date(get_current_user_id(), $atts['membership']);

	if ( $date_str ) {

      $date = date_create( $date_str );

      $sub_expire_html = "<div>Expires: " . date_format( $date,"Y/m/d" ) . "</div>";

	}

  }

  return $sub_expire_html;

}

add_shortcode('mepr-sub-expiration', 'mepr_sub_expiration_shortcode');