Change when user can renew their membership PMPro

pmpro_level_expiring_soon_example.php

<?php
/**
 * Allow members to only renew if their membership expires in 45 days or less.
 * Only do this for levels that are not recurring.
 * Add this code to your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

function custom_pmpro_is_level_expiring_soon( $r, $level ) {

	if( $level->billing_amount > 0 ) {
		return $r; //dont change for recurring levels
	}

    $days = 45; //change number of days before someone is allowed to renew.
    
    $r = false;
    $now = current_time('timestamp');
    
    if( $now + ($days*3600*24) >= $level->enddate ) {
        $r = true;
    }

    return $r;
}

add_filter( 'pmpro_is_level_expiring_soon', 'custom_pmpro_is_level_expiring_soon', 10, 2 );