Add Custom Column with data for Attendee Table ET+

functions.php

<?php
/**
 *
 * Add Custom column with data in Attendee Table
 *
 * @author Rafsun Chowdhury
 *
 * @link https://gist.github.com/rafsuntaskin/9a138c47068a6d332454ad4605c6244b
 *
 */

//Add Extra column at table
add_filter( 'tribe_tickets_attendee_table_columns', 'rt_add_extra_column', 50 );

function rt_add_extra_column( $columns ){
	$columns['extra_name'] = "Extra Info : Name";
	return $columns;
}

//populate data for custom column
add_filter( 'tribe_events_tickets_attendees_table_column', 'rt_add_custom_name_value_column_data', 10, 3 );

function rt_add_custom_name_value_column_data( $value, $item, $column ){

	if ( $column != 'extra_name' ) {
		return $value;
	}

	$extra_data = $item['attendee_meta'];
	//no extra data is found
	if ( empty( $extra_data ) ) {
		return $value;
	}

	//check if the custom name extra data is available
	if ( empty( $extra_data['name']['value'] ) ) {
		return $value;
	}

	return $extra_data['name']['value'];
}