Duplicate usermeta fields as xprofile fields. Sync BuddyPress and PMPro

duplicate_usermeta_to_xprofile.php

<?php

/**
 * This recipe run a script to sync your PMPro Registration Fields with BuddPress xprofie fields
 * 
 *  Add this to a custom plugin then run by adding this to your domain `/wp-admin/?pmpromm_process=1`
 * Remove when finished.
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

function mypmpro_batch_process_buddypress_xprofile(){
	if( ! empty( $_REQUEST['pmpromm_process'] ) ){
		duplicate_usermeta_to_xprofile();
	}
}
add_action( 'admin_init', 'mypmpro_batch_process_buddypress_xprofile' );
function duplicate_usermeta_to_xprofile( ) {
	global $wpdb;
	$fields = array(
		// add your fields here
		'brother_name'=>'7', // Add your PMPro RH variable name then point to the xprofile field ID
		'sister_name'=>'8',  // Add your PMPro RH variable name then point to the xprofile field ID
	);
	foreach ( $fields as $meta_key => $field_ID ) {
		$sqlQuery = "SELECT * FROM $wpdb->usermeta WHERE meta_key = '" . esc_sql($meta_key) . "' ";
		$fields = $wpdb->get_results( $sqlQuery );
		foreach ( $fields as $field ) {
			$x_field_data = xprofile_get_field_data( $field_ID, $field->user_id );
			if ( empty( $x_field_data ) ) {
				xprofile_set_field_data( $field_ID, $field->user_id, $field->meta_value );
			}
		}
	}
}