Filter WooCommerce orders by payment gateway

woo-filter-by-payment-gateway.php

<?php // do not include this line in FluentSnippets



add_action('woocommerce_order_list_table_restrict_manage_orders', function($type) {
    if ( 'shop_order' !== $type ) {
        return;
    }

    // get all payment methods, even inactive ones
    $gateways = WC()->payment_gateways->get_available_payment_gateways();
    ?>
    <select name="_shop_order_payment_method" id="dropdown_shop_order_payment_method">
        <option value="">
            <?php esc_html_e( 'All Payment Methods', 'wc-filter-orders-by-payment' ); ?>
        </option>
        <?php foreach ( $gateways as $id => $gateway ) : ?>
        <option value="<?php echo esc_attr( $id ); ?>" <?php echo esc_attr( isset( $_GET['_shop_order_payment_method'] ) ? selected( $id, $_GET['_shop_order_payment_method'], false ) : '' ); ?>>
            <?php echo esc_html( $gateway->get_method_title() ); ?>
        </option>
        <?php endforeach; ?>
    </select>
    <?php
}, 20, 1);

add_filter('woocommerce_order_list_table_prepare_items_query_args', function($args) {
    if ( isset( $_GET['_shop_order_payment_method'] ) && ! empty( $_GET['_shop_order_payment_method'] ) ) {
        $args['payment_method'] = wc_clean( $_GET['_shop_order_payment_method'] );
    }

    return $args;
});