TEC > Use space as the thousand separator (TEC only)

functions.php

<?php
/**
 * Format the event cost by using a space as the thousand separator.
 *
 * Usage: Add the snippet with Code Snippets or to your functions.php file.
 *        Enter the cost without a thousand separator, when creating the event.
 *
 * @since March 5, 2025 Initial version.
 *
 * @param double $cost the event cost
 * @param int    $event_id  The ID of the event
 *
 * @return string The formatted cost with the currency symbol.
 *
 * @author: Andras Guseo
 *
 * Plugins required: The Events Calendar
 */
add_filter( 'tribe_events_cost_unformatted', function( $cost, $event_id ) {

	$currency_symbol   = get_post_meta( $event_id, '_EventCurrencySymbol', true );
	$currency_position = get_post_meta( $event_id, '_EventCurrencyPosition', true );

	$formatted_cost = number_format( $cost, 0, '.', ' ' );

	if ( $currency_position == 'prefix' ) {
		$cost = $currency_symbol . $formatted_cost;
	} else {
		$cost = $formatted_cost . $currency_symbol;
	}

	return $cost;
}, 10, 2 );