Debug PMPro's pmpro_membership_content_filter() function.

pmpro_membership_content_filter_debug.php

<?php
/**
 * We can use the pmpro_membership_content_filter filter in
 * the pmpro_membership_content_filter() function to debug
 * and see what the $content and $hasaccess vars are set to
 * at the time of running.
 *
 * IMPORTANT: This code will effectively break your site with
 * the debug info. Only use this for a moment, then deactivate it.
 *
 * Add this code to a custom plugin or code snippet:
 * https://www.paidmembershipspro.com/how-to-add-code-to-wordpress/
 */
function my_pmpro_membership_content_filter_debug( $filter, $content, $hasaccess ) {
	echo "<hr />";
	var_dump( $content );
	echo "<hr />";
	var_dump( $hasaccess );

	return $filter;
}
add_filter( 'pmpro_membership_content_filter', 'my_pmpro_membership_content_filter_debug', 10, 3 );