Charge different prices for different membership levels with PMPro and PMPro Addon Packages.

custom_addon_package_prices.php

/*
	Charge different prices for different membership levels.
*/
//global var to store the price configurations
global $custom_addon_package_prices;
$custom_addon_package_prices = array(
	//post_id => array(level_id => price, level_id => price, ...)
	353 => array(1 => 1500, 2 => 1000, 3 => 500)
);

//function to addjust the price
function custom_addon_package_prices($level) {
	//make sure addon packages is activated
	if(!function_exists('pmproap_addMemberToPost'))
		return $level;
	
	//only affects logged in members
	if(!is_user_logged_in())
		return $level;			
		
	//are we purchasing a post?
	if(!empty($_REQUEST['ap']))	{
		$ap = intval($_REQUEST['ap']);
		$ap_post = get_post($ap);
		
		global $custom_addon_package_prices;
		if(isset($custom_addon_package_prices[$ap]) && isset($custom_addon_package_prices[$ap][$level->id])) {
			//updates initial_payment and billing amounts if they are non-zero
			if(!empty($level->initial_payment))
				$level->initial_payment = $custom_addon_package_prices[$ap][$level->id];
			if(!empty($level->billing_amount))
				$level->billing_amount = $custom_addon_package_prices[$ap][$level->id];
		}
	}
	
	return $level;
}
add_filter("pmpro_checkout_level", "custom_addon_package_prices", 20);

//adjust the price in non-member/etc text
function custom_addon_package_prices_text_filter($text) {
	global $wpdb, $current_user, $post, $pmpro_currency_symbol;

	//make sure pmpro addon packages is active
	if(!function_exists('pmproap_hasAccess'))
		return $text;
	
	//alterred version of filter that comes in pmpro addon packages
	if(!empty($post))
	{
		if(pmproap_isPostLocked($post->ID) && !pmproap_hasAccess($current_user->ID, $post->ID))
		{
			//which level to use for checkout link?
			$text_level_id = pmproap_getLevelIDForCheckoutLink($post->ID, $current_user->ID);
			
			//what's the price
			global $custom_addon_package_prices;
			if(!empty($custom_addon_package_prices) && !empty($custom_addon_package_prices[$post->ID]) && !empty($custom_addon_package_prices[$post->ID][$text_level_id]))
				$pmproap_price = $custom_addon_package_prices[$post->ID][$text_level_id];
			else
				$pmproap_price = get_post_meta($post->ID, "_pmproap_price", true);

			//check for all access levels
			$all_access_levels = apply_filters("pmproap_all_access_levels", array(), $current_user->ID, $post->ID);	
			
			//update text
			if(!empty($all_access_levels))
			{
				$level_names = array();
				foreach ($all_access_levels as $level_id)
				{
					$level = pmpro_getLevel($level_id);
					$level_names[] = $level->name;
				}
				
				$text = "<p>This content requires that you purchase additional access. The price is " . $pmpro_currency_symbol . $pmproap_price . " or free for our " . pmpro_implodeToEnglish($level_names) . " members.</p>";
				$text .= "<p><a href=\"" . pmpro_url("checkout", "?level=" . $text_level_id . "&ap=" . $post->ID) . "\">Purchase this Content (" . pmpro_formatPrice($pmproap_price) . ")</a> <a href=\"" . pmpro_url("levels") . "\">Choose a Membership Level</a></p>";
			}
			else
			{				
				$text = "<p>This content requires that you purchase additional access. The price is " . pmpro_formatPrice($pmproap_price) . ".</p>";
				$text .= "<p><a href=\"" . pmpro_url("checkout", "?level=" . $text_level_id . "&ap=" . $post->ID) . "\">Click here to checkout</a></p>";
			}
		}
	}	

	return $text;
}
add_filter("pmpro_non_member_text_filter", "custom_addon_package_prices_text_filter", 20);
add_filter("pmpro_not_logged_in_text_filter", "custom_addon_package_prices_text_filter", 20);