Shortcode to get membership level data for a user

pmpro_member_data_shortcode.php

<?php
/**
 * Shortcode to retrieve information about a user startdate/enddate
 * Add this code to your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 * www.paidmembershipspro.com - A membership plugin for WordPress.
 */
 
 function pmpro_member_data_shortcode( $atts, $content=null, $code='' ) {
	
	global $current_user;

	extract( shortcode_atts( array(
		'field' => NULL
	), $atts ) );

	$current_user->membership_level = pmpro_getMembershipLevelForUser($current_user->ID);

	if( empty( $current_user->membership_level ) ) {
		return __( 'Not A Member', 'paid-memberships-pro' );
	}

	// get the date.
	$date =  $current_user->membership_level->{$field};
	
	if( !empty( $date ) ){
		return date( "Y-m-d", $date );
	}else{
		return "";
	}
}

add_shortcode( 'pmpro_member_data', 'pmpro_member_data_shortcode' );