Jilt for WooCommerce - Clear persistent carts for customers who signed up over 30 days ago

jilt-for-wc-clear-persistent-carts.php

<?php
add_filter( 'woocommerce_debug_tools', function( $tools ) {

	$tools['wc_jilt_clear_persistent_carts'] = array(
		'name'     => __( 'Clear Persistent Carts from customers who signed up over 30 days ago.', 'jilt-for-woocommerce' ),
		'button'   => __( 'Clear', 'woocommerce-plugin-framework' ),
		'desc'     => __( 'This tool will clear the persistent cart for all registered customers who signed up over 30 days ago.', 'jilt-for-woocommerce' ),
		'callback' => 'wc_jilt_clear_persistent_carts'
	);
	return $tools;

} );

function wc_jilt_clear_persistent_carts() {

	$user_query = new WP_User_Query( array(
		'date_query' => array( array( 'before' => '30 days ago', 'inclusive' => true ) )
	) );

	$users = $user_query->get_results();

	$blog_id = get_current_blog_id();

	if ( ! empty( $users ) ) {
		foreach ( $users as $user ) {

			// persistent carts created in WC 3.1 and below
			if ( metadata_exists( 'user', $user->ID, '_woocommerce_persistent_cart' ) ) {
				delete_user_meta( $user->ID, '_woocommerce_persistent_cart' );
			}

			// persistent carts created in WC 3.2+
			if ( metadata_exists( 'user', $user->ID, '_woocommerce_persistent_cart_' . $blog_id ) ) {
				delete_user_meta( $user->ID, '_woocommerce_persistent_cart_' . $blog_id );
			}
		}
	}
}