mypmpro-set-initial-to-billing-if-expiring.php

<?php //do not copy

/**
 * This recipe will set the initial amount to the billing amount for a member    
 *  that has an expiration date and is renewing.
 * 
 */

function my_pmpro_change_initial_amount_existing_members( $level ) {
    
	if ( ! is_user_logged_in() ) {
        return $level;
    }

    global $current_user;

	$pmpro_level = pmpro_getLevel( $level->id );
    // must hardcode to recurring amount
    $initial_amount = $pmpro_level->billing_amount;
	
    // Get current active membership levels for this user
    $user_levels = pmpro_getMembershipLevelsForUser( $current_user->ID );

    if ( ! empty( $user_levels ) ) {
        foreach ( $user_levels as $user_level ) {
            if ( (int) $user_level->id === (int) $level->id ) {
                // Check if this level has an expiration date
                if ( ! empty( $user_level->enddate ) ) {
                    $level->initial_payment = $initial_amount;
					return $level;
                }
            }
        }
    }

    return $level;
}
add_filter( 'pmpro_checkout_level', 'my_pmpro_change_initial_amount_existing_members', 99, 1 );