custom-level-pricing.php

<?php 
/**
 *
 * Custom function to add a late fee to the checkout page in Paid Memberships Pro
 *
 * link: TBD
 * 
 * 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/
 * 
 */

/**
 * Custom function to add a late fee to the checkout page in Paid Memberships Pro
 *
 * @param object $level The level object being checked out for. 
 */
function my_pmpro_checkout_level( $level ) {
	//get logged in user
	$user = wp_get_current_user();
	//Bail if the user doesn't have the Lapsed Member role.
	if( ! in_array( 'lapsed_member', (array) $user->roles ) ) {
		return $level;
	}
	//check if level id is the level want to customize. Modify accordingly
	if( $level->id == "3" ) {
		//Get the today date without year
		$today = date("m-d");
		//Check if the checkout is between 01-01 and 01-30  or 07-01 and 12-31 and apply late fee policies. $95, 95 + 10 or 45 + 10 respectively. Switch
		if( $today >= "01-01" && $today <= "01-30") {
			$level->billing_amount = 95;
		} else if ( $today >= "01-30" && $today <= "06-30") {
			$level->billing_amount = 105;
		} else {
			$level->billing_amount = 55;
		}
	}
	return $level;
}

add_filter("pmpro_checkout_level", "my_pmpro_checkout_level");