Set PMPro to charge in different currencies based on IP Geolocation.

pmpro-charge-different-currencies.php

/*
Set PMPro to charge in different currencies based on IP Geolocation.
Requires the GeoIP Detect plugin (https://wordpress.org/plugins/geoip-detect/)
*/

function pmpro_determine_country_from_ip()
{
	global $country_from_ip;
	
	//check if the GEO IP Detect plugin is active
	if(!defined('GEOIP_DETECT_VERSION'))
		return false;
	
	if(!isset($country_from_ip))
	{
		//get the country
		$record = geoip_detect2_get_info_from_current_ip();
		$country_from_ip = $record->country->isoCode;
		if(empty($country_from_ip))
			$country_from_ip = false;
	}
	
	return $country_from_ip;
}

function pmpro_change_currency()
{
	global $post, $pmpro_pages, $pmpro_currency, $euro_countries;

	$country_from_ip = pmpro_determine_country_from_ip();
	
	//for testing
	//$country_from_ip = 'US';
		
	//if($country_from_ip == 'US')
	//	$pmpro_currency = 'USD';
	if(in_array($country_from_ip, $euro_countries))
		$pmpro_currency = 'EUR';
	if($country_from_ip == 'UK')
		$pmpro_currency = 'GBP';
}

function my_pmpro_checkout_level($level)
{
	pmpro_change_currency();
	return $level;
}

add_filter("pmpro_checkout_level", "my_pmpro_checkout_level");

function my_pmpro_format_price($formatted, $price, $pmpro_currency, $pmpro_currency_symbol)
{
	global $euro_countries;
	
	$country_from_ip = pmpro_determine_country_from_ip();

	//for testing
	//$country_from_ip = 'US';
	
//	if($country_from_ip == 'US')
//		$formatted = '$'.$price;
	if(in_array($country_from_ip, $euro_countries))
		$formatted = '€'.$price;
	if($country_from_ip == 'UK')
		$formatted = '£'.$price;
	
	return $formatted;
}

add_filter('pmpro_format_price', 'my_pmpro_format_price', 10, 4);

function my_init()
{
	global $euro_countries;
	$euro_countries = array('ES', 'SI', 'SK', 'PT', 'MT', 'LU', 'LT', 'LV', 'IT', 'IE', 'EL', 'DE', 'FR', 'FI', 'EE', 'CY', 'BE', 'AT', 'NL');
}
add_action('init', 'my_init');

It's worth noting this code only changes the currency symbol displayed at checkout and not the actual price or currency itself - Stripe will still charge in the default currency and this can lead to a whole host of legal problems. Users will be charged stripe's conversion rate rather than the price advertised on your site.

@itsnathanhere. Thank you for pointing this out. If I recall correctly, this did work on older versions, but I haven't tested this snippet with the latest version of PMPro. With that in mind I suggest using this as a starting point to implementing a geo location pricing display, but not as a "production ready" setup without additional testing. Also, I suggest getting in touch with the PMPro support team who should be able to offer guidance on how this could be extended in specific use cases. Cheers.